Re: tkinter, canvas, get color of image?
On 16 Apr, 00:46, Bryan Oakley [EMAIL PROTECTED] wrote: [EMAIL PROTECTED] wrote: On 13 Apr, 19:19, Bryan Oakley [EMAIL PROTECTED] wrote: [EMAIL PROTECTED] wrote: mapq = PhotoImage(file = 'C:\Users\saftarn\Desktop\elmapovic.gif') w.create_image(10, 10, image = mapq, anchor = NW) after doing this is there any possibility of getting the characteristics of the GIF-picture(or bitmap if i use that)? it would be very helpfull if i for example could do something like canvas.getcolor(image, mouseclick.x,mouseclick.y) if u get the point. get the color of the image where i clicked. The image isn't painted on the canvas, so to answer your specific question, no, you can't get the color of a pixel on the canvas in the way that you ask. However, when you click on the canvas you can get the item that was clicked on and the x/y of the click. From that you can figure out which pixel of the image is under the cursor. And from that you can query the image for the color of a specific pixel. how do i get the item? http://effbot.org/tkinterbook/canvas.htm#Tkinter.Canvas.create_image-... with any of those methods? when i click the mouse i can get event.object u mean? You can use find_closest to find the object closest to the x,y of the event. You can also do find_withtag(tk.CURRENT) which returns the item under the mouse pointer. Exception in Tkinter callback Traceback (most recent call last): File C:\Python25\lib\lib-tk\Tkinter.py, line 1403, in __call__ return self.func(*args) File C:\Users\saftarn\Desktop\pythonkod\mapexperiments \mapgetobject.py, line 17, in callback undermouse=find_closest(master.CURRENT) NameError: global name 'find_closest' is not defined from Tkinter import * master = Tk() w = Canvas(master, width=400, height=625) w.pack(expand = YES, fill = BOTH) mapq = PhotoImage(file = 'C:\Users\saftarn\Desktop\images \something.gif') w.create_image(30, 30, image = mapq, anchor = NW) def key(event): print pressed, repr(event.char) def callback(event): clobj=event.widget ##undermouse=find_withtag(master.CURRENT) undermouse=find_closest(master.CURRENT) print repr(undermouse) w.bind(Key, key) w.bind(Button-1, callback) w.pack() mainloop() -- http://mail.python.org/mailman/listinfo/python-list
Tkinter, getting canvas-object, how?
so i load a gif onto a canvas and when i click the canvs i want to get the color of the pixel that is clicked. so i need to ge the object im clicking. i was told in another thread to use find_withtag or find_closest but it is not working, maybe im using the method on the wrong object. how do i do this? and how do i then get specifics about that object, ie the pixel-color? Exception in Tkinter callback Traceback (most recent call last): File C:\Python25\lib\lib-tk\Tkinter.py, line 1403, in __call__ return self.func(*args) File C:\Users\saftarn\Desktop\pythonkod\mapexperiments \mapgetobject.py, line 17, in callback undermouse=find_closest(master.CURRENT) NameError: global name 'find_closest' is not defined from Tkinter import * master = Tk() w = Canvas(master, width=400, height=625) w.pack(expand = YES, fill = BOTH) mapq = PhotoImage(file = 'C:\Users\saftarn\Desktop\Maps\provinces-of- sweden.gif') w.create_image(30, 30, image = mapq, anchor = NW) def key(event): print pressed, repr(event.char) def callback(event): clobj=event.widget ##undermouse=find_withtag(master.CURRENT) undermouse=find_closest(master.CURRENT) print repr(undermouse) w.bind(Key, key) w.bind(Button-1, callback) w.pack() mainloop() -- http://mail.python.org/mailman/listinfo/python-list
Easiest way to get started with WebApps?
which is the easiest module to use to just get started with webapps quicklya nd starting getting things up and running, not advanced stuff just basic. -- http://mail.python.org/mailman/listinfo/python-list
Re: def power, problem when raising power to decimals
actually that 0**0 statement was wrong. 0**0 = 1 and should be. -- http://mail.python.org/mailman/listinfo/python-list
Re: py2exe, program has stoped working!?
On 14 Apr, 14:11, John Machin [EMAIL PROTECTED] wrote: On Apr 14, 7:24 pm, [EMAIL PROTECTED] wrote: Is it a console program or a gui program? GUI What happens when you run it without py2exe? it works perfectly, both from within python and launching from windows Have you searched for has stopped working in (a) your source code yes no such message there (b) the py2exe source code? no, will do but doubt thats the problem Have you managed to get any py2exe-created program to run properly? no Well, perhaps you might like to look in the samples directory of the py2exe distribution and choose a simple example and try that. By the way, popup is what you get in a web browser. What did this popup look like: a panel from your GUI software? A Windows message box? Did it have a title across the top? What was the exact text in the popup/panel/box? Were there any options other than to close the window? Which version of Python? Which Windows, what service pack? What GUI, what version? Care to divulge the contents of your setup.py? Apart from your GUI, what 3rd party packages/modules are you importing? its a windows message as others have said. only option to close the window. 2.5python windows vista tkinter GUI im importing tkinter and from future import division -- http://mail.python.org/mailman/listinfo/python-list
Profiling very small/quick functions, help!?
i use this code to profile. however for small standard functions it just says 0 seconds. so one solution is to run the function a very big number of times(how big?). but the bottom code doesnt work, it just runs the same profiling 1 times insetad of running the fucntion 10K times and evaluate the time of all thsoe 10K times. ao how to solve this? if __name__==__main__: try: from cProfile import run except: from profile import run run(tests()) if __name__==__main__: try: from cProfile import run except: from profile import run for x in range(1, 1): run(power(10,10)) -- http://mail.python.org/mailman/listinfo/python-list
Profiling, recursive func slower than imperative, normal?
the 0.409 vs 0.095 is the total times right?
so the imperative function is 4 times faster than the recursive.
or what does tottime stand for?
is this always the case that the recursive function is slower?
the gain is less code?
are some functions only implementable recursively?
def power(nbr, po):
if po==0:
return 1
if po0:
return nbr*power(nbr, po-1)
if po0:
return 1/power(nbr, -1*po)
109992 function calls (10002 primitive calls) in 0.409 CPU seconds
Ordered by: standard name
ncalls tottime percall cumtime percall
filename:lineno(function)
10.0150.0150.4090.409 pyshell#217:1(test1)
10.0000.0000.4090.409 string:1(module)
109989/0.3940.0000.3940.000 myMath.py:39(power)
10.0000.0000.0000.000 {method 'disable' of
'_lsprof.Profiler' objects}
def power2(nbr, po):
acc=1
if po = 1:
acc=nbr
for x in range(1, po):
acc=acc*nbr
if po 0:
if nbr!=0:
acc=1
for x in range(0, po, -1):
acc=acc/nbr
else:
return Division by zero
return acc
20001 function calls in 0.095 CPU seconds
Ordered by: standard name
ncalls tottime percall cumtime percall
filename:lineno(function)
10.0260.0260.0950.095 pyshell#221:1(test1)
10.0000.0000.0950.095 string:1(module)
0.0510.0000.0690.000 myMath.py:47(power2)
10.0000.0000.0000.000 {method 'disable' of
'_lsprof.Profiler' objects}
0.0170.0000.0170.000 {range}
--
http://mail.python.org/mailman/listinfo/python-list
def power, problem when raising power to decimals
how do i solve power(5,1.3)? def power(nbr, po): if po==0: return 1 if po0: return nbr*power(nbr, po-1) if po0: return 1/power(nbr, -1*po) also i found a link which states 0^0 isnt 1 even though every calculator ive tried says it is. it doesnt say what it is but i presume 0 then. but it seems the dude is wrong and it is 1? dont run the code with decimals, it will never leave the function, u have to restart the shell(if using the standard python ide) -- http://mail.python.org/mailman/listinfo/python-list
Re: tkinter, canvas, get color of image?
On 13 Apr, 19:19, Bryan Oakley [EMAIL PROTECTED] wrote: [EMAIL PROTECTED] wrote: mapq = PhotoImage(file = 'C:\Users\saftarn\Desktop\elmapovic.gif') w.create_image(10, 10, image = mapq, anchor = NW) after doing this is there any possibility of getting the characteristics of the GIF-picture(or bitmap if i use that)? it would be very helpfull if i for example could do something like canvas.getcolor(image, mouseclick.x,mouseclick.y) if u get the point. get the color of the image where i clicked. The image isn't painted on the canvas, so to answer your specific question, no, you can't get the color of a pixel on the canvas in the way that you ask. However, when you click on the canvas you can get the item that was clicked on and the x/y of the click. From that you can figure out which pixel of the image is under the cursor. And from that you can query the image for the color of a specific pixel. how do i get the item? http://effbot.org/tkinterbook/canvas.htm#Tkinter.Canvas.create_image-method with any of those methods? when i click the mouse i can get event.object u mean? -- http://mail.python.org/mailman/listinfo/python-list
tkinter, event.widget, what do i get?
when calling function hmm here, what do i get? the widget i clicked on? if i have a canvs on wich i have a bitmap and i click on the bitmap, is the event.widget then the bitmap? can i get info about the bitmap then? like color of the pixel i clicked. if so, how? w.bind(Key, key) w.bind(Button-1, hmm) def hmm(event): return event.widget -- http://mail.python.org/mailman/listinfo/python-list
Re: tkinter, event.widget, what do i get?
On 16 Apr, 00:24, Gabriel Genellina [EMAIL PROTECTED] wrote: En Tue, 15 Apr 2008 17:45:08 -0300, [EMAIL PROTECTED] escribió: when calling function hmm here, what do i get? the widget i clicked on? if i have a canvs on wich i have a bitmap and i click on the bitmap, is the event.widget then the bitmap? can i get info about the bitmap then? like color of the pixel i clicked. if so, how? w.bind(Key, key) w.bind(Button-1, hmm) def hmm(event): return event.widget Why don't you try by yourself? You can use: print repr(something) -- Gabriel Genellina i get Tkinter.Canvas instance at 0x01B9B6E8 thing is i get that even though i click outside the image. and what can i do with this number anyway? -- http://mail.python.org/mailman/listinfo/python-list
Re: py2exe, program has stoped working!?
Is it a console program or a gui program? GUI What happens when you run it without py2exe? it works perfectly, both from within python and launching from windows Have you searched for has stopped working in (a) your source code yes no such message there (b) the py2exe source code? no, will do but doubt thats the problem Have you managed to get any py2exe-created program to run properly? no -- http://mail.python.org/mailman/listinfo/python-list
Re: Game design : Making computer play
On 14 Apr, 09:13, v4vijayakumar [EMAIL PROTECTED] wrote: In computer based, two player, board games, how to make computer play? Are there any formal ways to _teach_ computer, to choose best possible move? I know this is kind of off-topic here. Please redirect me, if there are more appropriate newsgroup. Many thanks. can you post a link to the game so I can see the rules and how the board looks. /hopefully going to india soon -- http://mail.python.org/mailman/listinfo/python-list
latest command from toplevel?
windows vista and python 2.5, is there a way to get the latest command entered? would be very useful. if not by default, anything i could download or write myself? -- http://mail.python.org/mailman/listinfo/python-list
py2exe, program has stoped working!?
so i used py2exe and i have the build and the dist-folders. in the distfolder there is a Calculator.exe file. when i run it it just says Calculator.exe has stopped working in a popup but the program itself never shows up. wtf!? and when im distributing my program i have to include both catalogues right? -- http://mail.python.org/mailman/listinfo/python-list
Tkinter, image not appearing in function but without function
why is the first program not working? when i click the screen the map is not appearing. the second program works. from Tkinter import * master = Tk() w = Canvas(master, width=700, height=600) w.pack(expand = YES, fill = BOTH) def mapper(): mapq = PhotoImage(file = 'C:\Users\saftarn\Desktop\world-map.gif') w.create_image(10, 10, image = mapq, anchor = NW) def key(event): print pressed, repr(event.char) def callback(event): w.focus_set() print clicked at, event.x, event.y mapper() print 'yo' square = w.create_oval(event.x-5,event.y-5,event.x+5,event.y+5, fill=black) w.bind(Key, key) w.bind(Button-1, callback) w.pack() mainloop() from Tkinter import * master = Tk() w = Canvas(master, width=700, height=600) w.pack(expand = YES, fill = BOTH) q=raw_input(Choose: i=India, s=sweden, else World: ) if q==i: mapq = PhotoImage(file = 'C:\Users\saftarn\Desktop\map-india.bmp') elif q=='s': mapq = PhotoImage(file = 'C:\Users\saftarn\Desktop\provinces-of- sweden.gif') else: mapq = PhotoImage(file = 'C:\Users\saftarn\Desktop\world-map.gif') print mapq.height(), mapq.width() w.create_image(10, 10, image = mapq, anchor = NW) def key(event): print pressed, repr(event.char) def callback(event): w.focus_set() print clicked at, event.x, event.y square = w.create_oval(event.x-5,event.y-5,event.x+5,event.y+5, fill=black) hur hitta om inom ratt-kolla color of w.bind(Key, key) w.bind(Button-1, callback) w.pack() mainloop() -- http://mail.python.org/mailman/listinfo/python-list
tkinter, canvas, get color of image?
mapq = PhotoImage(file = 'C:\Users\saftarn\Desktop\elmapovic.gif') w.create_image(10, 10, image = mapq, anchor = NW) after doing this is there any possibility of getting the characteristics of the GIF-picture(or bitmap if i use that)? it would be very helpfull if i for example could do something like canvas.getcolor(image, mouseclick.x,mouseclick.y) if u get the point. get the color of the image where i clicked. -- http://mail.python.org/mailman/listinfo/python-list
tkinter, editing an entry, int-value of insert?
in this program when using the c-button it deletes the last token entered. i want to delete the token after the mousecursor. lets say the string is: 12*(81**.5+12) and i put the cursor between the * and * because i want times .5 not root. now if i press c it deletes ) which is not what i want. ive tried coming up with a function that does what i want but neither of the ways as shown below works. i want to do something like e.delete(INSERT, INSERT+1) but that doesnt work because it is string+int and INSERT+1 doesnt work either. so how do i get the int-value of insert? what is the trick? def Backspace(): a=len(e.get()) e.delete(a-1,END) #e.delete(INSERT, END) #e.delete(ANCHOR,END) from __future__ import division import Tkinter from Tkinter import * mygui = Tkinter.Tk() mygui.title(Calculator) e = Entry(mygui) e.grid(row=1, column=1, columnspan=4, sticky=NSEW) c = Entry(mygui) c.grid(row=2, column=1, columnspan=4, sticky=NSEW) def Disp(nstr): e.insert(INSERT, nstr) def Calc(): expr=e.get() c.delete(0, END) try: c.insert(END, eval(expr)) except: c.insert(END, Not computable) def Erase(): e.delete(0,END) c.delete(0, END) def Backspace(): a=len(e.get()) e.delete(a-1,END) x = 1 y = 4 for char in '123+456-789*0()/.': b = Button(mygui, text=char, command=lambda n=char:Disp(n), width=2, height=1) b.grid(row=y, column=x, sticky=NSEW) x=x+1 if x==5: x=1 y=y+1 b = Button(mygui, text=^, command=lambda n=**:Disp(n), width=2, height=1) b.grid(row=8, column=2, sticky=NSEW) b = Button(mygui, text=C,command=Erase, width=2, height=1) b.grid(row=8, column=3, sticky=NSEW) b = Button(mygui, text=c,command=Backspace, width=2, height=1) b.grid(row=8, column=4, sticky=NSEW) b = Button(mygui, text==,command=Calc, width=18, height=1) b.grid(row=9, column=1, columnspan=4, sticky=NSEW) mygui.mainloop() -- http://mail.python.org/mailman/listinfo/python-list
Re: tkinter, editing an entry, int-value of insert?
solved this: def Backspace(): st = e.index(INSERT) e.delete(st-1,st) -- http://mail.python.org/mailman/listinfo/python-list
toplevel, get latest entry?
windows vista and python 2.5, is there a way to get the latest command entered? would be very useful. if not by default, anything i could download or write myself? -- http://mail.python.org/mailman/listinfo/python-list
Re: tkinter, overwrite Label-text?
On 10 Apr, 18:03, Marc 'BlackJack' Rintsch [EMAIL PROTECTED] wrote: On Thu, 10 Apr 2008 07:37:08 -0700, skanemupp wrote: i know how to do this already. the problem is i want the text to stay in the windowa nd not start overwriting Answer:. Then don't use `place()` but let Tkinter handle the layout with the pack and/or grid layout manager. GUIs with `place()` are a bad idea because the GUI may look odd or is even unusable on other peoples computers with other screen resolutions, fonts, and font sizes. Ciao, Marc 'BlackJack' Rintsch ok but i have trouble using grid. if i try to use a Label witht he text answer in the following code it doenst work very well. from __future__ import division import Tkinter from Tkinter import * mygui = Tkinter.Tk() mygui.title(Calculator) ##l = Label(mygui, text=Answer: ) ##l.grid(row=2, column=1, columnspan=2) e = Entry(mygui) e.grid(row=1, column=1, columnspan=4) c = Entry(mygui) c.grid(row=2, column=1, columnspan=4) def Disp(nstr): e.insert(INSERT, nstr) def Calc(): expr=e.get() c.delete(0, END) try: c.insert(END, eval(expr)) except: c.insert(END, Not computable) def Erase(): e.delete(0,END) c.delete(0, END) def Backspace(): a=len(e.get()) e.delete(a-1,END) #e.delete(INSERT, END) #e.delete(ANCHOR,END) x = 1 y = 4 for char in '123+456-789*0()/.': b = Button(mygui, text=char, command=lambda n=char:Disp(n), width=2, height=1) b.grid(row=y, column=x) x=x+1 if x==5: x=1 y=y+1 b = Button(mygui, text=^, command=lambda n=**:Disp(n), width=2, height=1) b.grid(row=8, column=2) b = Button(mygui, text=C,command=Erase, width=2, height=1) b.grid(row=8, column=3) b = Button(mygui, text=c,command=Backspace, width=2, height=1) b.grid(row=8, column=4) b = Button(mygui, text==,command=Calc, width=18, height=1) b.grid(row=9, column=1, columnspan=8) mygui.mainloop() -- http://mail.python.org/mailman/listinfo/python-list
Profiling programs/scripts?
how do i profile a program? i found out that there are some profilers included in the standard library but couldnt really figure out how to access/use them -- http://mail.python.org/mailman/listinfo/python-list
tkinter, annoying grid-problem
so my little calculator works perfectly now. just having some trouble with the layout. this whole tkinter-thing seems to be more tricky than it should be. how can i make the 4 column of buttons have the same distance and size between them as the other 3 columns? and how can i make the top entry end where the 2nd row entry ends(meaning the top entry will be longer)? why are the 4th row split from the others? hard to fix the problems when u dont even understand why things happen. seems so llogical a lot of it. i change something then something unexpected happens. from __future__ import division import Tkinter from Tkinter import * mygui = Tkinter.Tk() mygui.title(Calculator) l = Label(mygui, text=Answer: ) l.grid(row=2, column=1, columnspan=2, sticky=W) e = Entry(mygui) e.grid(row=1, column=1, columnspan=4, sticky=W) c = Entry(mygui) c.grid(row=2, column=3, columnspan=4, sticky=W) def Disp(nstr): e.insert(INSERT, nstr) def Calc(): expr=e.get() c.delete(0, END) try: c.insert(END, eval(expr)) except: c.insert(END, Not computable) def Erase(): e.delete(0,END) c.delete(0, END) def Backspace(): a=len(e.get()) e.delete(a-1,END) #e.delete(INSERT, END) #e.delete(ANCHOR,END) x = 1 y = 4 for char in '123+456-789*0()/.': b = Button(mygui, text=char, command=lambda n=char:Disp(n), width=2, height=1) b.grid(row=y, column=x, sticky=W) x=x+1 if x==5: x=1 y=y+1 b = Button(mygui, text=^, command=lambda n=**:Disp(n), width=2, height=1) b.grid(row=8, column=2, sticky=W) b = Button(mygui, text=C,command=Erase, width=2, height=1) b.grid(row=8, column=3, sticky=W) b = Button(mygui, text=c,command=Backspace, width=2, height=1) b.grid(row=8, column=4, sticky=W) b = Button(mygui, text==,command=Calc, width=18, height=1) b.grid(row=9, column=1, columnspan=4, sticky=W) mygui.mainloop() -- http://mail.python.org/mailman/listinfo/python-list
questions about Exceptions?
is there a general philosophy as to when to use exceptions and when not to? like here: def Calc(): global nbr try: print eval(nbr) except: print Not computable nbr = i have a calculator and nbr is a string that contains '0123456789+-*/' if the string ends on +-*/ it will throw an exception(unexpected EOF). i could easily prevent the exceptions here with an if-statement, is that preferrable and why? also when u throw exceptions should u catch the speicfic one? i guess only if u want it to do soemthing special since catching only only one exception logicall would abort the program if another one is thrown? -- http://mail.python.org/mailman/listinfo/python-list
Re: questions about Exceptions?
On 10 Apr, 12:38, [EMAIL PROTECTED] wrote: def Calc(): global nbr try: print eval(nbr) #a = Label(mygui, text=eval(nbr)) #a.place(relx=0.4, rely=0.1, anchor=CENTER) except: print Not computable nbr = def Erase(): global nbr nbr = Seems to me you could be better off passing a parameter and a return statement of None (or your parameter cleaned) for those functions, which should work. Given an input, Eval it and then return None. That way you wouldn't need the Erase... the erase() id alwys need if u wanna abort whilst u wrote something. -- http://mail.python.org/mailman/listinfo/python-list
Re: questions about Exceptions?
On 10 Apr, 10:51, [EMAIL PROTECTED] wrote: In general you should only catch the exceptions you want to catch, therefore avoiding the issue of catching unexpected ones, for instances the programming unexpectandly closing. Well, exception handling is expensive (when it catches one) so it really is up to you. If you are using eval and know it might EOF then you should probably look to handle that. The main IF statement style I can think of (checking the end of the string) wouldn't be much of an improvement. Currently I would be very worried about seeing that code as it breaks a number of conventions. However it depends on the importance of the code to wherever or not you should change this. (Global variable, the use of Eval, the CATCH ALL except and the setting of a global variable at the end.) I've seen a good few (simple and advanced) calculator examples using python on the NET, it might be worth looking at some to see their style of coding a calculator to help your own. i know about the GLOBAL stuff, i might rewrite the program using classes later so i can avoid this. i am mainly playin with tkinter for now. i was thinking the same check with if at the beginning and end of the string so there isnt a */ but also if someone uses /// or soemthing like that in the middle it crashes so it is hard to cover every case, esp since **5 means ^5. is the use of if also expensive? -- http://mail.python.org/mailman/listinfo/python-list
Re: questions about Exceptions?
here is the whole code: from __future__ import division import Tkinter from Tkinter import * mygui = Tkinter.Tk() mygui.title(Calculator) w = Label(mygui, text=Answer: ) w.place(relx=0.15, rely=0.1, anchor=CENTER) nbr = def Disp(nstr): global nbr nbr=nbr+nstr print You need to seek help!,nbr def Calc(): global nbr try: print eval(nbr) #a = Label(mygui, text=eval(nbr)) #a.place(relx=0.4, rely=0.1, anchor=CENTER) except: print Not computable nbr = def Erase(): global nbr nbr = b = Button(mygui, text=1,command=lambda n='1':Disp(n), width=2, height=1) b.place(relx=0.1, rely=0.2, anchor=CENTER) b = Button(mygui, text=2,command=lambda n='2':Disp(n), width=2, height=1) b.place(relx=0.2, rely=0.2, anchor=CENTER) b = Button(mygui, text=3,command=lambda n='3':Disp(n), width=2, height=1) b.place(relx=0.3, rely=0.2, anchor=CENTER) b = Button(mygui, text=+,command=lambda n='+':Disp(n), width=2, height=1) b.place(relx=0.4, rely=0.2, anchor=CENTER) b = Button(mygui, text=4,command=lambda n='4':Disp(n), width=2, height=1) b.place(relx=0.1, rely=0.3, anchor=CENTER) b = Button(mygui, text=5,command=lambda n='5':Disp(n), width=2, height=1) b.place(relx=0.2, rely=0.3, anchor=CENTER) b = Button(mygui, text=6,command=lambda n='6':Disp(n), width=2, height=1) b.place(relx=0.3, rely=0.3, anchor=CENTER) b = Button(mygui, text=-,command=lambda n='-':Disp(n), width=2, height=1) b.place(relx=0.4, rely=0.3, anchor=CENTER) b = Button(mygui, text=7,command=lambda n='7':Disp(n), width=2, height=1) b.place(relx=0.1, rely=0.4, anchor=CENTER) b = Button(mygui, text=8,command=lambda n='8':Disp(n), width=2, height=1) b.place(relx=0.2, rely=0.4, anchor=CENTER) b = Button(mygui, text=9,command=lambda n='9':Disp(n), width=2, height=1) b.place(relx=0.3, rely=0.4, anchor=CENTER) b = Button(mygui, text=*,command=lambda n='*':Disp(n), width=2, height=1) b.place(relx=0.4, rely=0.4, anchor=CENTER) b = Button(mygui, text=0,command=lambda n='0':Disp(n), width=2, height=1) b.place(relx=0.1, rely=0.5, anchor=CENTER) b = Button(mygui, text=C,command=Erase, width=2, height=1) b.place(relx=0.2, rely=0.5, anchor=CENTER) b = Button(mygui, text=^.5,command=lambda n='**.5':Disp(n), width=2, height=1) b.place(relx=0.3, rely=0.5, anchor=CENTER) b = Button(mygui, text=/,command=lambda n='/':Disp(n), width=2, height=1) b.place(relx=0.4, rely=0.5, anchor=CENTER) b = Button(mygui, text==,command=Calc, width=2, height=1) b.place(relx=0.2, rely=0.7, anchor=CENTER) mygui.mainloop() -- http://mail.python.org/mailman/listinfo/python-list
Re: questions about Exceptions?
On 10 Apr, 13:15, [EMAIL PROTECTED] wrote:
the erase() id alwys need if u wanna abort whilst u wrote something.
But if it is meant to only evaluate once you've pressed the enter key
(I take it?) you shouldn't need that. And if you are to abort while
evaluating it will not do that.
CHANGED IT NOW TO A MUCH BETTER SOLUTION(will see if i can make a
better solution with the buttons, hate big blocks of similarlooking
code):
from __future__ import division
import Tkinter
from Tkinter import *
mygui = Tkinter.Tk()
mygui.title(Calculator)
l = Label(mygui, text=Answer: )
l.place(relx=0.15, rely=0.2, anchor=CENTER)
e = Entry(mygui)
e.place(relx=0.4, rely=0.1, anchor=CENTER)
def Disp(nstr):
e.insert(END, nstr)
def Calc():
expr=e.get()
try:
b = Label(mygui, text=eval(expr))
b.place(relx=0.4, rely=0.2, anchor=CENTER)
except:
b = Label(mygui, text=Not computable)
b.place(relx=0.4, rely=0.2, anchor=CENTER)
def Erase():
e.delete(0,END)
b = Button(mygui, text=1,command=lambda n='1':Disp(n), width=2,
height=1)
b.place(relx=0.1, rely=0.4, anchor=CENTER)
b = Button(mygui, text=2,command=lambda n='2':Disp(n), width=2,
height=1)
b.place(relx=0.2, rely=0.4, anchor=CENTER)
b = Button(mygui, text=3,command=lambda n='3':Disp(n), width=2,
height=1)
b.place(relx=0.3, rely=0.4, anchor=CENTER)
b = Button(mygui, text=+,command=lambda n='+':Disp(n), width=2,
height=1)
b.place(relx=0.4, rely=0.4, anchor=CENTER)
b = Button(mygui, text=4,command=lambda n='4':Disp(n), width=2,
height=1)
b.place(relx=0.1, rely=0.5, anchor=CENTER)
b = Button(mygui, text=5,command=lambda n='5':Disp(n), width=2,
height=1)
b.place(relx=0.2, rely=0.5, anchor=CENTER)
b = Button(mygui, text=6,command=lambda n='6':Disp(n), width=2,
height=1)
b.place(relx=0.3, rely=0.5, anchor=CENTER)
b = Button(mygui, text=-,command=lambda n='-':Disp(n), width=2,
height=1)
b.place(relx=0.4, rely=0.5, anchor=CENTER)
b = Button(mygui, text=7,command=lambda n='7':Disp(n), width=2,
height=1)
b.place(relx=0.1, rely=0.6, anchor=CENTER)
b = Button(mygui, text=8,command=lambda n='8':Disp(n), width=2,
height=1)
b.place(relx=0.2, rely=0.6, anchor=CENTER)
b = Button(mygui, text=9,command=lambda n='9':Disp(n), width=2,
height=1)
b.place(relx=0.3, rely=0.6, anchor=CENTER)
b = Button(mygui, text=*,command=lambda n='*':Disp(n), width=2,
height=1)
b.place(relx=0.4, rely=0.6, anchor=CENTER)
b = Button(mygui, text=0,command=lambda n='0':Disp(n), width=2,
height=1)
b.place(relx=0.1, rely=0.7, anchor=CENTER)
b = Button(mygui, text=C,command=Erase, width=2, height=1)
b.place(relx=0.2, rely=0.7, anchor=CENTER)
b = Button(mygui, text=^,command=lambda n='**':Disp(n), width=2,
height=1)
b.place(relx=0.3, rely=0.7, anchor=CENTER)
b = Button(mygui, text=/,command=lambda n='/':Disp(n), width=2,
height=1)
b.place(relx=0.4, rely=0.7, anchor=CENTER)
b = Button(mygui, text=.,command=lambda n='.':Disp(n), width=2,
height=1)
b.place(relx=0.1, rely=0.8, anchor=CENTER)
b = Button(mygui, text=(,command=lambda n='(':Disp(n), width=2,
height=1)
b.place(relx=0.2, rely=0.8, anchor=CENTER)
b = Button(mygui, text=),command=lambda n=')':Disp(n), width=2,
height=1)
b.place(relx=0.3, rely=0.8, anchor=CENTER)
b = Button(mygui, text==,command=Calc, width=2, height=1)
b.place(relx=0.4, rely=0.8, anchor=CENTER)
mygui.mainloop()
--
http://mail.python.org/mailman/listinfo/python-list
Re: questions about Exceptions?
from __future__ import division import Tkinter from Tkinter import * mygui = Tkinter.Tk() mygui.title(Calculator) l = Label(mygui, text=Answer: ) l.place(relx=0.15, rely=0.2, anchor=CENTER) e = Entry(mygui) e.place(relx=0.4, rely=0.1, anchor=CENTER) def Disp(nstr): e.insert(END, nstr) def Calc(): expr=e.get() try: b = Label(mygui, text=eval(expr)) b.place(relx=0.4, rely=0.2, anchor=CENTER) except: b = Label(mygui, text=Not computable) b.place(relx=0.4, rely=0.2, anchor=CENTER) def Erase(): e.delete(0,END) x = 0.1 y = 0.4 for char in '123+456-789*0^./()': b = Button(mygui, text=char,command=lambda n=char:Disp(n), width=2, height=1) b.place(relx=x, rely=y, anchor=CENTER) x=x+0.1 if x==0.5: x=0.1 y=y+0.1 b = Button(mygui, text=C,command=Erase, width=2, height=1) b.place(relx=0.3, rely=0.8, anchor=CENTER) b = Button(mygui, text==,command=Calc, width=2, height=1) b.place(relx=0.4, rely=0.8, anchor=CENTER) mygui.mainloop() -- http://mail.python.org/mailman/listinfo/python-list
tkinter, overwrite Label-text?
using python And tkinter. i have a GUI that outputs a text among other things. after input form user i want this text to be *)cleared and/or *)overwritten. what is the best way to achieve that? also, how do i make Label-text expand to the right and not to the left? -- http://mail.python.org/mailman/listinfo/python-list
Re: questions about Exceptions?
On 10 Apr, 12:38, [EMAIL PROTECTED] wrote: def Calc(): global nbr try: print eval(nbr) #a = Label(mygui, text=eval(nbr)) #a.place(relx=0.4, rely=0.1, anchor=CENTER) except: print Not computable nbr = def Erase(): global nbr nbr = Seems to me you could be better off passing a parameter and a return statement of None (or your parameter cleaned) for those functions, which should work. Given an input, Eval it and then return None. That way you wouldn't need the Erase... i never really got what u meant by this? -- http://mail.python.org/mailman/listinfo/python-list
Re: tkinter, overwrite Label-text?
On 10 Apr, 15:28, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: On Apr 10, 2:35 pm, [EMAIL PROTECTED] wrote: using python And tkinter. i have a GUI that outputs a text among other things. after input form user i want this text to be *)cleared and/or *)overwritten. what is the best way to achieve that? [...] Which widget do you use? Some widgets can be connected to variables so that when the variable changes the widget is automatically update. Have a look athttp://docs.python.org/lib/node696.html. HTH, Dennis Benzinger i use the Label-widget. -- http://mail.python.org/mailman/listinfo/python-list
Re: tkinter, overwrite Label-text?
On 10 Apr, 16:29, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: On Apr 10, 3:47 pm, [EMAIL PROTECTED] wrote: [...] i use the Label-widget. Then you should be able to connect a variable to your widget like I wrote in my previous post. Just try out the example from the Python documentation. Of course in your case entrythingy would be the Label-widget. Take care to assign values to your variable by using the set function. Dennis Benzinger i know how to do this already. the problem is i want the text to stay in the windowa nd not start overwriting Answer:. i have solved this by using an Entry for the answer as well but id prefer using a Label. here is the code: from __future__ import division import Tkinter from Tkinter import * mygui = Tkinter.Tk() mygui.title(Calculator) l = Label(mygui, text=Answer: ) l.place(relx=0.15, rely=0.2, anchor=CENTER) e = Entry(mygui) e.place(relx=0.4, rely=0.1, anchor=CENTER) def Disp(nstr): e.insert(END, nstr) def Calc(): expr=e.get() try: b = Label(mygui, text=eval(expr)) b.place(relx=0.4, rely=0.2, anchor=CENTER) except: b = Label(mygui, text=Not computable) b.place(relx=0.4, rely=0.2, anchor=CENTER) def Erase(): e.delete(0,END) x = 0.1 y = 0.4 for char in '123+456-789*0()/.': b = Button(mygui, text=char, command=lambda n=char:Disp(n), width=2, height=1) b.place(relx=x, rely=y, anchor=CENTER) x=x+0.1 if x==0.5: x=0.1 y=y+0.1 b = Button(mygui, text=^, command=lambda n=**:Disp(n), width=2, height=1) b.place(relx=0.2, rely=0.8, anchor=CENTER) b = Button(mygui, text=C,command=Erase, width=2, height=1) b.place(relx=0.3, rely=0.8, anchor=CENTER) b = Button(mygui, text==,command=Calc, width=2, height=1) b.place(relx=0.4, rely=0.8, anchor=CENTER) mygui.mainloop() -- http://mail.python.org/mailman/listinfo/python-list
Tkinter: Entry, how to get INSERTpos?
in this function i want to be able to use the cursor and delete in the middle of a number. how do i get the value of anchor or insert? i want to write: e.delete(pos-1,pos) def Backspace(): a=len(e.get()) e.delete(a-1,END) #e.delete(INSERT, END) #e.delete(ANCHOR,END) the complete program: from __future__ import division import Tkinter from Tkinter import * mygui = Tkinter.Tk() mygui.title(Calculator) l = Label(mygui, text=Answer: ) l.place(relx=0.15, rely=0.2, anchor=CENTER) e = Entry(mygui) e.place(relx=0.48, rely=0.1, anchor=CENTER, width=173) c = Entry(mygui) c.place(relx=0.6, rely=0.2, anchor=CENTER) def Disp(nstr): e.insert(INSERT, nstr) def Calc(): expr=e.get() c.delete(0, END) try: c.insert(END, eval(expr)) except: c.insert(END, Not computable) def Erase(): e.delete(0,END) c.delete(0, END) def Backspace(): a=len(e.get()) e.delete(a-1,END) #e.delete(INSERT, END) #e.delete(ANCHOR,END) x = 0.1 y = 0.4 for char in '123+456-789*0()/.': b = Button(mygui, text=char, command=lambda n=char:Disp(n), width=2, height=1) b.place(relx=x, rely=y, anchor=CENTER) x=x+0.1 if x==0.5: x=0.1 y=y+0.1 b = Button(mygui, text=^, command=lambda n=**:Disp(n), width=2, height=1) b.place(relx=0.2, rely=0.8, anchor=CENTER) b = Button(mygui, text=C,command=Erase, width=2, height=1) b.place(relx=0.3, rely=0.8, anchor=CENTER) b = Button(mygui, text=c,command=Backspace, width=2, height=1) b.place(relx=0.4, rely=0.8, anchor=CENTER) b = Button(mygui, text==,command=Calc, width=12, height=1) b.place(relx=0.25, rely=0.9, anchor=CENTER) mygui.mainloop() -- http://mail.python.org/mailman/listinfo/python-list
Tkinter, resize window, keep widgets relative placements?
the code is down below. when i click maximize window it looks terrible since the widgets are not keeping their relative size. i guess i could use pack or grid to do that instead of place? but i tried with pack and grid before and had trouble making it looking good. is it possible to have the minimized window just being placed in the middle without the distance between the buttons and entrys being enlonge? from __future__ import division import Tkinter from Tkinter import * mygui = Tkinter.Tk() mygui.title(Calculator) l = Label(mygui, text=Answer: ) l.place(relx=0.15, rely=0.2, anchor=CENTER) e = Entry(mygui) e.place(relx=0.48, rely=0.1, anchor=CENTER, width=173) c = Entry(mygui) c.place(relx=0.6, rely=0.2, anchor=CENTER) def Disp(nstr): e.insert(INSERT, nstr) def Calc(): expr=e.get() c.delete(0, END) try: c.insert(END, eval(expr)) except: c.insert(END, Not computable) def Erase(): e.delete(0,END) c.delete(0, END) def Backspace(): a=len(e.get()) e.delete(a-1,END) #e.delete(INSERT, END) #e.delete(ANCHOR,END) x = 0.1 y = 0.4 for char in '123+456-789*0()/.': b = Button(mygui, text=char, command=lambda n=char:Disp(n), width=2, height=1) b.place(relx=x, rely=y, anchor=CENTER) x=x+0.1 if x==0.5: x=0.1 y=y+0.1 b = Button(mygui, text=^, command=lambda n=**:Disp(n), width=2, height=1) b.place(relx=0.2, rely=0.8, anchor=CENTER) b = Button(mygui, text=C,command=Erase, width=2, height=1) b.place(relx=0.3, rely=0.8, anchor=CENTER) b = Button(mygui, text=c,command=Backspace, width=2, height=1) b.place(relx=0.4, rely=0.8, anchor=CENTER) b = Button(mygui, text==,command=Calc, width=12, height=1) b.place(relx=0.25, rely=0.9, anchor=CENTER) mygui.mainloop() -- http://mail.python.org/mailman/listinfo/python-list
Re: Tkinter, resize window, keep widgets relative placements?
here i didi it with pack() but when i try to use the answerwidget it gtes all f* up. any suggestions? from __future__ import division import Tkinter from Tkinter import * mygui = Tkinter.Tk() mygui.title(Calculator) ##l = Label(mygui, text=Answer: ) ##l.grid(row=2, column=1, columnspan=2) e = Entry(mygui) e.grid(row=1, column=1, columnspan=4) c = Entry(mygui) c.grid(row=2, column=1, columnspan=4) def Disp(nstr): e.insert(INSERT, nstr) def Calc(): expr=e.get() c.delete(0, END) try: c.insert(END, eval(expr)) except: c.insert(END, Not computable) def Erase(): e.delete(0,END) c.delete(0, END) def Backspace(): a=len(e.get()) e.delete(a-1,END) #e.delete(INSERT, END) #e.delete(ANCHOR,END) x = 1 y = 4 for char in '123+456-789*0()/.': b = Button(mygui, text=char, command=lambda n=char:Disp(n), width=2, height=1) b.grid(row=y, column=x) x=x+1 if x==5: x=1 y=y+1 b = Button(mygui, text=^, command=lambda n=**:Disp(n), width=2, height=1) b.grid(row=8, column=2) b = Button(mygui, text=C,command=Erase, width=2, height=1) b.grid(row=8, column=3) b = Button(mygui, text=c,command=Backspace, width=2, height=1) b.grid(row=8, column=4) b = Button(mygui, text==,command=Calc, width=18, height=1) b.grid(row=9, column=1, columnspan=8) mygui.mainloop() -- http://mail.python.org/mailman/listinfo/python-list
Tkinter, repaint?, keep size?
so my calculator is almost done for u that have read my previous posts. i have some minor problems i have to fix though. *one is i need to repaint once i have performed a calculation so that the old results are not left on the screen. cant find a method for that. *another is now when i write the expression to be evaluated it resizes the window as the text grows. i want the windowsize and all the buttonplacements stay constant, how do i achieve this? -- http://mail.python.org/mailman/listinfo/python-list
Prevent GUI layout from changing?
when i added the results-LABEL the buttons have changed place. meh why cant i just put buttons and stuff on a specific coordinate and have them staying there? #! /usr/bin/env python from Tkinter import * import tkMessageBox class GUIFramework(Frame): This is the GUI def __init__(self, master=None): Initialize yourself self.expr = Initialise the base class Frame.__init__(self,master) Set the Window Title self.master.title(Calculator) Display the main window with a little bit of padding self.grid(padx=10,pady=10) self.CreateWidgets() def CreateWidgets(self): ##Create the Entry, set it to be a bit wider ##self.enText = Entry(self) ##self.enText.grid(row=0, column=0, columnspan=3) Create the Button, set the text and the command that will be called when the button is clicked self.btnDisplay = Button(self, text=calculate!, command=self.Calculate) self.btnDisplay.grid(row=0, column=31) Create the Button, set the text and the command that will be called when the button is clicked self.lbText = Label(self, text=Results: ) self.lbText.grid(row=1, column=0) self.btnDisplay = Button(self,text='1',command=lambda n=1:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=3, column=0, padx=5, pady=5) self.btnDisplay = Button(self,text='2',command=lambda n=2:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=3, column=1, padx=5, pady=5) self.btnDisplay = Button(self,text='3',command=lambda n=3:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=3, column=2, padx=5, pady=5) self.btnDisplay = Button(self,text='+',command=lambda n=+:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=3, column=3, padx=5, pady=5) self.btnDisplay = Button(self,text='4',command=lambda n=4:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=4, column=0, padx=5, pady=5) self.btnDisplay = Button(self,text='5',command=lambda n=5:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=4, column=1, padx=5, pady=5) self.btnDisplay = Button(self,text='6',command=lambda n=6:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=4, column=2, padx=5, pady=5) self.btnDisplay = Button(self,text='-',command=lambda n=-:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=4, column=3, padx=5, pady=5) self.btnDisplay = Button(self,text='7',command=lambda n=7:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=5, column=0, padx=5, pady=5) self.btnDisplay = Button(self,text='8',command=lambda n=8:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=5, column=1, padx=5, pady=5) self.btnDisplay = Button(self,text='9',command=lambda n=9:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=5, column=2, padx=5, pady=5) self.btnDisplay = Button(self,text='*',command=lambda n=*:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=5, column=3, padx=5, pady=5) self.btnDisplay = Button(self,text='0',command=lambda n=0:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=6, column=0, padx=5, pady=5) self.btnDisplay = Button(self,text='C',command=self.Clean) self.btnDisplay.grid(row=6, column=1, padx=5, pady=5) self.btnDisplay = Button(self,text='r',command=lambda n=r:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=6, column=2, padx=5, pady=5) self.btnDisplay = Button(self,text='/',command=lambda n=/:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=6, column=3, padx=5, pady=5) def Display(self, number): self.expr = self.expr + number self.lbText = Label(self, text=self.expr) self.lbText.grid(row=0, column=0) def Calculate(self): self.expr = str(eval(self.expr))#try catch tex 3+6+ self.lbText = Label(self, text=self.expr) self.lbText.grid(row=1, column=1) self.expr = def Clean(self): self.expr = #self.update() if __name__ == __main__: guiFrame = GUIFramework() guiFrame.mainloop() -- http://mail.python.org/mailman/listinfo/python-list
Tkinter, a lot of buttons, make prog shorter?
is there anyway to make this shorter? i hate having these big blocks of similar-looking code, very unaesthetic. maybe doesnt matter good-code-wise? anyway can i make some function that makes this shorter? like put the etiquettes on the button froma string of '123+456-789*0Cr/' ? problem is the command and lambda-func for each button is different. self.btnDisplay = Button(self,text='1',command=lambda n=1:self.Display(n),width=2,height=2) self.btnDisplay.grid(row=3, column=0) self.btnDisplay = Button(self,text='2',command=lambda n=2:self.Display(n),width=2,height=2) self.btnDisplay.grid(row=3, column=1) self.btnDisplay = Button(self,text='3',command=lambda n=3:self.Display(n),width=2,height=2) self.btnDisplay.grid(row=3, column=2) self.btnDisplay = Button(self,text='+',command=lambda n=+:self.Display(n),width=2,height=2) self.btnDisplay.grid(row=3, column=3) self.btnDisplay = Button(self,text='4',command=lambda n=4:self.Display(n),width=2,height=2) self.btnDisplay.grid(row=4, column=0) self.btnDisplay = Button(self,text='5',command=lambda n=5:self.Display(n),width=2,height=2) self.btnDisplay.grid(row=4, column=1) self.btnDisplay = Button(self,text='6',command=lambda n=6:self.Display(n),width=2,height=2) self.btnDisplay.grid(row=4, column=2) self.btnDisplay = Button(self,text='-',command=lambda n=-:self.Display(n),width=2,height=2) self.btnDisplay.grid(row=4, column=3) self.btnDisplay = Button(self,text='7',command=lambda n=7:self.Display(n),width=2,height=2) self.btnDisplay.grid(row=5, column=0) self.btnDisplay = Button(self,text='8',command=lambda n=8:self.Display(n),width=2,height=2) self.btnDisplay.grid(row=5, column=1) self.btnDisplay = Button(self,text='9',command=lambda n=9:self.Display(n),width=2,height=2) self.btnDisplay.grid(row=5, column=2) self.btnDisplay = Button(self,text='*',command=lambda n=*:self.Display(n),width=2,height=2) self.btnDisplay.grid(row=5, column=3) self.btnDisplay = Button(self,text='0',command=lambda n=0:self.Display(n),width=2,height=2) self.btnDisplay.grid(row=6, column=0) self.btnDisplay = Button(self,text='C',command=self.Clean,width=2,height=2) self.btnDisplay.grid(row=6, column=1) self.btnDisplay = Button(self,text='r',command=lambda n=r:self.Display(n),width=2,height=2) self.btnDisplay.grid(row=6, column=2) self.btnDisplay = Button(self,text='/',command=lambda n=/:self.Display(n),width=2,height=2) self.btnDisplay.grid(row=6, column=3) -- http://mail.python.org/mailman/listinfo/python-list
How to create an exe-file?
how do you create exe-files of your python-code? is it different depending on what libraries, GUI-frameworks you use? i want to create an exe-file of a pythonscript that uses Tkinter. -- http://mail.python.org/mailman/listinfo/python-list
Re: How to create an exe-file?
On 6 Apr, 22:50, Fredrik Lundh [EMAIL PROTECTED] wrote: [EMAIL PROTECTED] wrote: how do you create exe-files of your python-code? is it different depending on what libraries, GUI-frameworks you use? i want to create an exe-file of a pythonscript that uses Tkinter. assuming windows only, you want: http://www.py2exe.org/ also see: http://effbot.org/zone/python-compile.htm /F ty. a good thing about python is the portability though. but u cant make an exe that can be used on mac too, ie one exe fpr both? if i want to make an exe for mac, what do i need? -- http://mail.python.org/mailman/listinfo/python-list
Re: Prevent GUI layout from changing?
On 6 Apr, 22:15, Gabriel Genellina [EMAIL PROTECTED] wrote: En Sun, 06 Apr 2008 15:12:55 -0300, [EMAIL PROTECTED] escribió: I can't help with your sizing problem, I don't know grids. But don't do this: def Display(self, number): self.expr = self.expr + number self.lbText = Label(self, text=self.expr) self.lbText.grid(row=0, column=0) def Calculate(self): self.expr = str(eval(self.expr))#try catch tex 3+6+ self.lbText = Label(self, text=self.expr) self.lbText.grid(row=1, column=1) self.expr = You're creating a *new* Label object for each keystroke (they stack on the same place and only the newest is visible, I presume). Instead, you should change the text inside the existing widget: self.lbText.config(text=self.expr) (there is no need to reposition the widget) Label is described herehttp://effbot.org/tkinterbook/label.htm and you may want to learn to use Tkinter variables: http://effbot.org/tkinterbook/variable.htm -- Gabriel Genellina the problem is that when i start writing long numbers the window grows bigger which is really annoying. is that ebcause of what u said? as of now i can see exactly the expression i typed and the answer it is just annoing that it doesnt stay the same size. -- http://mail.python.org/mailman/listinfo/python-list
Re: Tkinter, a lot of buttons, make prog shorter?
should i not use self. in Clean() and Calculate() either? anyway i had changed it before. must have copied the wrong program. #! /usr/bin/env python from Tkinter import * import tkMessageBox class GUIFramework(Frame): This is the GUI def __init__(self, master=None): Initialize yourself self.expr = Initialise the base class Frame.__init__(self,master) Set the Window Title self.master.title(Calculator) Display the main window with a little bit of padding self.grid(padx=10,pady=10) self.CreateWidgets() def CreateWidgets(self): Create the Button, set the text and the command that will be called when the button is clicked btnDisplay = Button(self, text=calculate!, command=self.Calculate) btnDisplay.grid(row=0, column=31) ##Create the Button, set the text and the ##command that will be called when the button is clicked ##self.lbText = Label(self, text=Results:) ##self.lbText.grid(row=1, column=0) btnDisplay = Button(self,text='1',command=lambda n=1:self.Display(n),width=2,height=2) btnDisplay.grid(row=3, column=0) btnDisplay = Button(self,text='2',command=lambda n=2:self.Display(n),width=2,height=2) btnDisplay.grid(row=3, column=1) btnDisplay = Button(self,text='3',command=lambda n=3:self.Display(n),width=2,height=2) btnDisplay.grid(row=3, column=2) btnDisplay = Button(self,text='+',command=lambda n=+:self.Display(n),width=2,height=2) btnDisplay.grid(row=3, column=3) btnDisplay = Button(self,text='4',command=lambda n=4:self.Display(n),width=2,height=2) btnDisplay.grid(row=4, column=0) btnDisplay = Button(self,text='5',command=lambda n=5:self.Display(n),width=2,height=2) btnDisplay.grid(row=4, column=1) btnDisplay = Button(self,text='6',command=lambda n=6:self.Display(n),width=2,height=2) btnDisplay.grid(row=4, column=2) btnDisplay = Button(self,text='-',command=lambda n=-:self.Display(n),width=2,height=2) btnDisplay.grid(row=4, column=3) btnDisplay = Button(self,text='7',command=lambda n=7:self.Display(n),width=2,height=2) btnDisplay.grid(row=5, column=0) btnDisplay = Button(self,text='8',command=lambda n=8:self.Display(n),width=2,height=2) btnDisplay.grid(row=5, column=1) btnDisplay = Button(self,text='9',command=lambda n=9:self.Display(n),width=2,height=2) btnDisplay.grid(row=5, column=2) btnDisplay = Button(self,text='*',command=lambda n=*:self.Display(n),width=2,height=2) btnDisplay.grid(row=5, column=3) btnDisplay = Button(self,text='0',command=lambda n=0:self.Display(n),width=2,height=2) btnDisplay.grid(row=6, column=0) btnDisplay = Button(self,text='C',command=self.Clean,width=2,height=2) btnDisplay.grid(row=6, column=1) btnDisplay = Button(self,text='^.5',command=lambda n=**. 5:self.Display(n),width=2,height=2) btnDisplay.grid(row=6, column=2) btnDisplay = Button(self,text='/',command=lambda n=/:self.Display(n),width=2,height=2) btnDisplay.grid(row=6, column=3) def Display(self, number): self.expr = self.expr + number self.lbText = Label(self, text=self.expr) self.lbText.grid(row=0, column=0) def Calculate(self): self.expr = str(eval(self.expr))#try catch tex 3+6+ result = self.expr self.Clean() self.lbText = Label(self, text=result) self.lbText.grid(row=0, column=0) self.expr = def Clean(self): self.expr = self.lbText.config(text=self.expr) self.lbText = Label(self, text=self.expr) self.lbText.grid(row=0, column=0) self.expr = self.lbText.config(text=self.expr) self.lbText = Label(self, text=self.expr) self.lbText.grid(row=0, column=0) if __name__ == __main__: guiFrame = GUIFramework() guiFrame.mainloop() -- http://mail.python.org/mailman/listinfo/python-list
Re: TKinter, buttonwidget response problem(1) and all btns the same size(2)!
am i not doing that then? did u look at the code? where do i add the bind if this: btnDisplay = Button(self, text=1, command=self.Display) btnDisplay.grid(row=3, column=0, padx=5, pady=5) is not enough? def Display(self, event_obj): button = event_obj.widget text = button.cget(text) if text==1: print 1 i get this exception so i need to pass another argument? im passing 2 no? Exception in Tkinter callback Traceback (most recent call last): File C:\Python25\lib\lib-tk\Tkinter.py, line 1403, in __call__ return self.func(*args) TypeError: Display() takes exactly 2 arguments (1 given) -- http://mail.python.org/mailman/listinfo/python-list
Re: TKinter, buttonwidget response problem(1) and all btns the same size(2)!
def __init__(self): # ... button = Button(self, text='1', command=lambda n=1: self.display(n)) # ... def display(self, number): print number should this really be inside the __init__ function? -- http://mail.python.org/mailman/listinfo/python-list
Re: TKinter, buttonwidget response problem(1) and all btns the same size(2)!
On 5 Apr, 17:09, Fredrik Lundh [EMAIL PROTECTED] wrote: [EMAIL PROTECTED] wrote: def __init__(self): # ... button = Button(self, text='1', command=lambda n=1: self.display(n)) # ... def display(self, number): print number should this really be inside the __init__ function? what's wrong with creating widgets in an __init__ method? /F i dont know, i used a piece of code i found which had a createwidgets- method. isnt init a function, not a method btw(or it is the same thing?) this is the current code, only included 2 buttons here to make it shorter. i might still have misinterpreted though, is the code correct(it runs correct at least...)? whats the advantage/disadvante to have it inside the init? #! /usr/bin/env python from Tkinter import * import tkMessageBox class GUIFramework(Frame): This is the GUI def __init__(self, master=None): Initialize yourself Initialise the base class Frame.__init__(self,master) Set the Window Title self.master.title(Calculator) Display the main window with a little bit of padding self.grid(padx=10,pady=10) self.CreateWidgets() def CreateWidgets(self): self.btnDisplay = Button(self,text='1',command=lambda n=1:self.Display(n)) self.btnDisplay.grid(row=3, column=0, padx=5, pady=5) self.btnDisplay = Button(self,text='/',command=lambda n=/:self.Display(n)) self.btnDisplay.grid(row=6, column=3, padx=5, pady=5) def Display(self, number): print number if __name__ == __main__: guiFrame = GUIFramework() guiFrame.mainloop() -- http://mail.python.org/mailman/listinfo/python-list
Tkinter: making buttons the same size?
on windows vista these buttons dont have the same size, the / shrinks a little. how do i make them the same size or prevent shrinking? a mac-user told me they look the same to him so maybe it doesnt shrink on macs but it does when using VISTA. i tried some .propagate and extend-stuff but didnt work. #! /usr/bin/env python from Tkinter import * import tkMessageBox class GUIFramework(Frame): This is the GUI def __init__(self, master=None): Initialize yourself Initialise the base class Frame.__init__(self,master) Set the Window Title self.master.title(Calculator) Display the main window with a little bit of padding self.grid(padx=10,pady=10) self.CreateWidgets() def CreateWidgets(self): self.btnDisplay = Button(self,text='1',command=lambda n=1:self.Display(n)) self.btnDisplay.grid(row=3, column=0, padx=5, pady=5) self.btnDisplay = Button(self,text='/',command=lambda n=/:self.Display(n)) self.btnDisplay.grid(row=6, column=3, padx=5, pady=5) def Display(self, number): print number if __name__ == __main__: guiFrame = GUIFramework() guiFrame.mainloop() -- http://mail.python.org/mailman/listinfo/python-list
Re: Tkinter: making buttons the same size?
how do i do that? i get this error: self.btnDisplay = Button(self,text='1',command=lambda n=1:self.Display(n)) self.btnDisplay.grid(row=3, column=0, padx=5, pady=5, width=1) self.btnDisplay = Button(self,text='/',command=lambda n=/:self.Display(n)) self.btnDisplay.grid(row=6, column=3, padx=5, pady=5, width=1) Traceback (most recent call last): File C:\Users\saftarn\Desktop\guiexperiments \calcguiworkingshort.py, line 37, in module guiFrame = GUIFramework() File C:\Users\saftarn\Desktop\guiexperiments \calcguiworkingshort.py, line 20, in __init__ self.CreateWidgets() File C:\Users\saftarn\Desktop\guiexperiments \calcguiworkingshort.py, line 28, in CreateWidgets self.btnDisplay.grid(row=3, column=0, padx=5, pady=5, width=1) File C:\Python25\lib\lib-tk\Tkinter.py, line 1859, in grid_configure + self._options(cnf, kw)) TclError: bad option -width: must be -column, -columnspan, -in, - ipadx, -ipady, -padx, -pady, -row, -rowspan, or -sticky -- http://mail.python.org/mailman/listinfo/python-list
Re: TKinter, buttonwidget response problem(1) and all btns the same size(2)!
it works now. here is all the code: #! /usr/bin/env python from Tkinter import * import tkMessageBox class GUIFramework(Frame): This is the GUI def __init__(self, master=None): Initialize yourself Initialise the base class Frame.__init__(self,master) Set the Window Title self.master.title(Calculator) Display the main window with a little bit of padding self.grid(padx=10,pady=10) self.CreateWidgets() def CreateWidgets(self): ##Create the Entry, set it to be a bit wider ##self.enText = Entry(self) ##self.enText.grid(row=0, column=0, columnspan=3) Create the Button, set the text and the command that will be called when the button is clicked self.btnDisplay = Button(self, text=calculate!, state=DISABLED) self.btnDisplay.grid(row=0, column=31) self.btnDisplay = Button(self,text='1',command=lambda n=1:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=3, column=0, padx=5, pady=5) self.btnDisplay = Button(self,text='2',command=lambda n=2:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=3, column=1, padx=5, pady=5) self.btnDisplay = Button(self,text='3',command=lambda n=3:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=3, column=2, padx=5, pady=5) self.btnDisplay = Button(self,text='+',command=lambda n=+:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=3, column=3, padx=5, pady=5) self.btnDisplay = Button(self,text='4',command=lambda n=4:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=4, column=0, padx=5, pady=5) self.btnDisplay = Button(self,text='5',command=lambda n=5:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=4, column=1, padx=5, pady=5) self.btnDisplay = Button(self,text='6',command=lambda n=6:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=4, column=2, padx=5, pady=5) self.btnDisplay = Button(self,text='-',command=lambda n=-:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=4, column=3, padx=5, pady=5) self.btnDisplay = Button(self,text='7',command=lambda n=7:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=5, column=0, padx=5, pady=5) self.btnDisplay = Button(self,text='8',command=lambda n=8:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=5, column=1, padx=5, pady=5) self.btnDisplay = Button(self,text='9',command=lambda n=9:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=5, column=2, padx=5, pady=5) self.btnDisplay = Button(self,text='*',command=lambda n=*:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=5, column=3, padx=5, pady=5) self.btnDisplay = Button(self,text='0',command=lambda n=0:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=6, column=0, padx=5, pady=5) self.btnDisplay = Button(self,text='C',command=lambda n=C:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=6, column=1, padx=5, pady=5) self.btnDisplay = Button(self,text='r',command=lambda n=r:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=6, column=2, padx=5, pady=5) self.btnDisplay = Button(self,text='/',command=lambda n=/:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=6, column=3, padx=5, pady=5) def Display(self, number): #print number self.lbText = Label(self, text=number) self.lbText.grid(row=0, column=0) if __name__ == __main__: guiFrame = GUIFramework() guiFrame.mainloop() -- http://mail.python.org/mailman/listinfo/python-list
Tkinter, add pressed buttons onto string display string, how to?
using tkinter and python i now have a small App (that will hopefully soon be a fully functioning calculator) where u can push buttons and the corresponding number or operator is shown. when u press 1, 1 appears on the screen, pres + and + appears etc. at the moment every output overwrites the previous so what i want to do is obviosuly to add every new output to a string so that i can read the string and perform the calculation. so i want: * when pushing the button push the token of the button onto a string * display the new string, ie 1+2 for example * want to be able to access this string when pressing calculate so i can figure out which operators should be done first so it can solve something like this: (1+2*3)(3-4/2) and not just simple 1+2-stuff. do i have to have some global string-variable in the GUIframework then? im not sure where to start... here is the code: #! /usr/bin/env python from Tkinter import * import tkMessageBox class GUIFramework(Frame): This is the GUI def __init__(self, master=None): Initialize yourself Initialise the base class Frame.__init__(self,master) Set the Window Title self.master.title(Calculator) Display the main window with a little bit of padding self.grid(padx=10,pady=10) self.CreateWidgets() def CreateWidgets(self): ##Create the Entry, set it to be a bit wider ##self.enText = Entry(self) ##self.enText.grid(row=0, column=0, columnspan=3) Create the Button, set the text and the command that will be called when the button is clicked self.btnDisplay = Button(self, text=calculate!, state=DISABLED) self.btnDisplay.grid(row=0, column=31) self.btnDisplay = Button(self,text='1',command=lambda n=1:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=3, column=0, padx=5, pady=5) self.btnDisplay = Button(self,text='2',command=lambda n=2:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=3, column=1, padx=5, pady=5) self.btnDisplay = Button(self,text='3',command=lambda n=3:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=3, column=2, padx=5, pady=5) self.btnDisplay = Button(self,text='+',command=lambda n=+:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=3, column=3, padx=5, pady=5) self.btnDisplay = Button(self,text='4',command=lambda n=4:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=4, column=0, padx=5, pady=5) self.btnDisplay = Button(self,text='5',command=lambda n=5:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=4, column=1, padx=5, pady=5) self.btnDisplay = Button(self,text='6',command=lambda n=6:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=4, column=2, padx=5, pady=5) self.btnDisplay = Button(self,text='-',command=lambda n=-:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=4, column=3, padx=5, pady=5) self.btnDisplay = Button(self,text='7',command=lambda n=7:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=5, column=0, padx=5, pady=5) self.btnDisplay = Button(self,text='8',command=lambda n=8:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=5, column=1, padx=5, pady=5) self.btnDisplay = Button(self,text='9',command=lambda n=9:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=5, column=2, padx=5, pady=5) self.btnDisplay = Button(self,text='*',command=lambda n=*:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=5, column=3, padx=5, pady=5) self.btnDisplay = Button(self,text='0',command=lambda n=0:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=6, column=0, padx=5, pady=5) self.btnDisplay = Button(self,text='C',command=lambda n=C:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=6, column=1, padx=5, pady=5) self.btnDisplay = Button(self,text='r',command=lambda n=r:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=6, column=2, padx=5, pady=5) self.btnDisplay = Button(self,text='/',command=lambda n=/:self.Display(n),width=1,height=1) self.btnDisplay.grid(row=6, column=3, padx=5, pady=5) def Display(self, number): #print number self.lbText = Label(self, text=number) self.lbText.grid(row=0, column=0) if __name__ == __main__: guiFrame = GUIFramework() guiFrame.mainloop() -- http://mail.python.org/mailman/listinfo/python-list
Re: Tkinter, add pressed buttons onto string display string, how to?
input = hello input += world print input this i know. im wondering how to handle the variable in the actual program. this exception i get: Exception in Tkinter callback Traceback (most recent call last): File C:\Python25\lib\lib-tk\Tkinter.py, line 1403, in __call__ return self.func(*args) File C:\Users\saftarn\Desktop\guiexperiments\calculatorGUI.py, line 48, in lambda self.btnDisplay = Button(self,text='+',command=lambda n=+:self.Display(n),width=1,height=1) File C:\Users\saftarn\Desktop\guiexperiments\calculatorGUI.py, line 92, in Display str = number + str UnboundLocalError: local variable 'str' referenced before assignment A caculator program is pretty complex. Based on your rudimentary questions, I don't think you have enough programming experience to tackle a project like that yet. nah ill be fine. im new to python, not to programming. -- http://mail.python.org/mailman/listinfo/python-list
Re: Tkinter, add pressed buttons onto string display string, how to?
Just like the message says: You are trying to use `str` (on the right hand side of the assignment) before anything is bound to that name. Ciao, Marc 'BlackJack' Rintsch i know but i want the variable str(which i found out is a reserved word so i changed it) to be accessible all over __init__ right? so i tried to delcare it in __init__ in the beginning of the framework class but then when i access it in the method Display i get that error. so how should i declare this variable to be able to access it everywhere? i want another method calculate that can access the same string later and do the calculations(writing some other code now that will read and interpret that). -- http://mail.python.org/mailman/listinfo/python-list
Best way to check if string is an integer?
which is the best way to check if a string is an number or a char? could the 2nd example be very expensive timewise if i have to check a lot of strings? this value = raw_input() try: value = int(value) except ValueError: print value is not an integer or: c=raw_input(yo: ) if c in '0123456789': print integer else: print char or some other way? -- http://mail.python.org/mailman/listinfo/python-list
while-loops enter the last time after condition is filled?
it seems to me from my results that when i use a while-loop it will execute once after the condition is met. ie the conditions is met the code executes one time more and then quits. -- http://mail.python.org/mailman/listinfo/python-list
TKinter, buttonwidget response problem(1) and all btns the same size(2)!
1st question: when i run this program 1 will be printed into the interpreter when i run it BUT without me clicking the actual button. when i then click the button 1, nothing happens. obv i dont want any output when i dont push the button but i want it when i do. what am i doing wrong here? 2nd question: i want all the buttons to have the same size. i thought i should use row/columnspan but i dont get that to work. how should i do? [code] #! /usr/bin/env python from Tkinter import * import tkMessageBox class GUIFramework(Frame): This is the GUI def __init__(self,master=None): Initialize yourself Initialise the base class Frame.__init__(self,master) Set the Window Title self.master.title(Calculator) Display the main window with a little bit of padding self.grid(padx=10,pady=10) self.CreateWidgets() def CreateWidgets(self): self.enText = Entry(self) self.enText.grid(row=0, column=0, columnspan=8, padx=5, pady=5) self.enText = Entry(self) self.enText.grid(row=1, column=0, columnspan=8, padx=5, pady=5) self.btnDisplay = Button(self, text=1, command=self.Display(1)) self.btnDisplay.grid(row=3, column=0, padx=5, pady=5) self.btnDisplay = Button(self, text=2, default=ACTIVE) self.btnDisplay.grid(row=3, column=1, padx=5, pady=5) self.btnDisplay = Button(self, text=3, default=ACTIVE) self.btnDisplay.grid(row=3, column=2, padx=5, pady=5) self.btnDisplay = Button(self, text=+, default=ACTIVE) self.btnDisplay.grid(row=3, column=3, padx=5, pady=5) self.btnDisplay = Button(self, text=4, default=ACTIVE) self.btnDisplay.grid(row=4, column=0, padx=5, pady=5) self.btnDisplay = Button(self, text=5, default=ACTIVE) self.btnDisplay.grid(row=4, column=1, padx=5, pady=5) self.btnDisplay = Button(self, text=6, default=ACTIVE) self.btnDisplay.grid(row=4, column=2, padx=5, pady=5) self.btnDisplay = Button(self, text=-, default=ACTIVE) self.btnDisplay.grid(row=4, column=3, padx=5, pady=5) self.btnDisplay = Button(self, text=7, default=ACTIVE) self.btnDisplay.grid(row=5, column=0, padx=5, pady=5) self.btnDisplay = Button(self, text=8, default=ACTIVE) self.btnDisplay.grid(row=5, column=1, padx=5, pady=5) self.btnDisplay = Button(self, text=9, default=ACTIVE) self.btnDisplay.grid(row=5, column=2, padx=5, pady=5) self.btnDisplay = Button(self, text=*, default=ACTIVE) self.btnDisplay.grid(row=5, column=3, padx=5, pady=5) self.btnDisplay = Button(self, text=0, default=ACTIVE) self.btnDisplay.grid(row=6, column=0, padx=5, pady=5) self.btnDisplay = Button(self, text=C, default=ACTIVE) self.btnDisplay.grid(row=6, column=1, padx=5, pady=5) self.btnDisplay = Button(self, text=r, default=ACTIVE) self.btnDisplay.grid(row=6, column=2, padx=5, pady=5) self.btnDisplay = Button(self, text=/, default=ACTIVE) self.btnDisplay.grid(row=6, column=3, padx=5, pady=5) def Display(self, xbtn): if xbtn==1: print 1 if __name__ == __main__: guiFrame = GUIFramework() guiFrame.mainloop() [/code] -- http://mail.python.org/mailman/listinfo/python-list
Re: TKinter, buttonwidget response problem(1) and all btns the same size(2)!
On 5 Apr, 05:26, 7stud [EMAIL PROTECTED] wrote: On Apr 4, 7:06 pm, [EMAIL PROTECTED] wrote: 1st question: when i run this program 1 will be printed into the interpreter when i run it BUT without me clicking the actual button. when i then click the button 1, nothing happens. obv i dont want any output when i dont push the button but i want it when i do. what am i doing wrong here? 2nd question: i want all the buttons to have the same size. i thought i should use row/columnspan but i dont get that to work. how should i do? [code] #! /usr/bin/env python from Tkinter import * import tkMessageBox class GUIFramework(Frame): This is the GUI def __init__(self,master=None): Initialize yourself Initialise the base class Frame.__init__(self,master) Set the Window Title self.master.title(Calculator) Display the main window with a little bit of padding self.grid(padx=10,pady=10) self.CreateWidgets() def CreateWidgets(self): self.enText = Entry(self) self.enText.grid(row=0, column=0, columnspan=8, padx=5, pady=5) self.enText = Entry(self) self.enText.grid(row=1, column=0, columnspan=8, padx=5, pady=5) self.btnDisplay = Button(self, text=1, command=self.Display(1)) self.btnDisplay.grid(row=3, column=0, padx=5, pady=5) self.btnDisplay = Button(self, text=2, default=ACTIVE) self.btnDisplay.grid(row=3, column=1, padx=5, pady=5) self.btnDisplay = Button(self, text=3, default=ACTIVE) self.btnDisplay.grid(row=3, column=2, padx=5, pady=5) self.btnDisplay = Button(self, text=+, default=ACTIVE) self.btnDisplay.grid(row=3, column=3, padx=5, pady=5) self.btnDisplay = Button(self, text=4, default=ACTIVE) self.btnDisplay.grid(row=4, column=0, padx=5, pady=5) self.btnDisplay = Button(self, text=5, default=ACTIVE) self.btnDisplay.grid(row=4, column=1, padx=5, pady=5) self.btnDisplay = Button(self, text=6, default=ACTIVE) self.btnDisplay.grid(row=4, column=2, padx=5, pady=5) self.btnDisplay = Button(self, text=-, default=ACTIVE) self.btnDisplay.grid(row=4, column=3, padx=5, pady=5) self.btnDisplay = Button(self, text=7, default=ACTIVE) self.btnDisplay.grid(row=5, column=0, padx=5, pady=5) self.btnDisplay = Button(self, text=8, default=ACTIVE) self.btnDisplay.grid(row=5, column=1, padx=5, pady=5) self.btnDisplay = Button(self, text=9, default=ACTIVE) self.btnDisplay.grid(row=5, column=2, padx=5, pady=5) self.btnDisplay = Button(self, text=*, default=ACTIVE) self.btnDisplay.grid(row=5, column=3, padx=5, pady=5) self.btnDisplay = Button(self, text=0, default=ACTIVE) self.btnDisplay.grid(row=6, column=0, padx=5, pady=5) self.btnDisplay = Button(self, text=C, default=ACTIVE) self.btnDisplay.grid(row=6, column=1, padx=5, pady=5) self.btnDisplay = Button(self, text=r, default=ACTIVE) self.btnDisplay.grid(row=6, column=2, padx=5, pady=5) self.btnDisplay = Button(self, text=/, default=ACTIVE) self.btnDisplay.grid(row=6, column=3, padx=5, pady=5) def Display(self, xbtn): if xbtn==1: print 1 if __name__ == __main__: guiFrame = GUIFramework() guiFrame.mainloop() [/code] If you have this function: def f(): print 1 return 10 and you write: result = f() The '()' is the function execution operator; it tells python to execute the function. In this case, the function executes, and then the return value of the function is assigned to the variable result. If a function does not have a return statement, then the function returns None by default. The same thing is happening in this portion of your code: command = self.Display(1) That code tells python to execute the Display function and assign the function's return value to the variable command. As a result Display executes and 1 is displayed. Then since Dispay does not have a return statement, None is returned, and None is assigned to command. Obviously, that is not what you want to do. What you want to do is assign a function reference to command so that python can execute the function sometime later when you click on the button. A function reference is just the function name without the '()' after it. So you would write: command = self.Display But writing it like that doesn't allow *you* to pass any arguments to Display(). In addition, *tkinter* does not pass any arguments to Display when tkinter calls Display in response to a button click. As a result, there is no way to pass an argument to Display. However, there is another way to cause a function to execute when an
Re: TKinter, buttonwidget response problem(1) and all btns the same size(2)!
On 5 Apr, 05:57, [EMAIL PROTECTED] wrote: On 5 Apr, 05:26, 7stud [EMAIL PROTECTED] wrote: On Apr 4, 7:06 pm, [EMAIL PROTECTED] wrote: 1st question: when i run this program 1 will be printed into the interpreter when i run it BUT without me clicking the actual button. when i then click the button 1, nothing happens. obv i dont want any output when i dont push the button but i want it when i do. what am i doing wrong here? 2nd question: i want all the buttons to have the same size. i thought i should use row/columnspan but i dont get that to work. how should i do? [code] #! /usr/bin/env python from Tkinter import * import tkMessageBox class GUIFramework(Frame): This is the GUI def __init__(self,master=None): Initialize yourself Initialise the base class Frame.__init__(self,master) Set the Window Title self.master.title(Calculator) Display the main window with a little bit of padding self.grid(padx=10,pady=10) self.CreateWidgets() def CreateWidgets(self): self.enText = Entry(self) self.enText.grid(row=0, column=0, columnspan=8, padx=5, pady=5) self.enText = Entry(self) self.enText.grid(row=1, column=0, columnspan=8, padx=5, pady=5) self.btnDisplay = Button(self, text=1, command=self.Display(1)) self.btnDisplay.grid(row=3, column=0, padx=5, pady=5) self.btnDisplay = Button(self, text=2, default=ACTIVE) self.btnDisplay.grid(row=3, column=1, padx=5, pady=5) self.btnDisplay = Button(self, text=3, default=ACTIVE) self.btnDisplay.grid(row=3, column=2, padx=5, pady=5) self.btnDisplay = Button(self, text=+, default=ACTIVE) self.btnDisplay.grid(row=3, column=3, padx=5, pady=5) self.btnDisplay = Button(self, text=4, default=ACTIVE) self.btnDisplay.grid(row=4, column=0, padx=5, pady=5) self.btnDisplay = Button(self, text=5, default=ACTIVE) self.btnDisplay.grid(row=4, column=1, padx=5, pady=5) self.btnDisplay = Button(self, text=6, default=ACTIVE) self.btnDisplay.grid(row=4, column=2, padx=5, pady=5) self.btnDisplay = Button(self, text=-, default=ACTIVE) self.btnDisplay.grid(row=4, column=3, padx=5, pady=5) self.btnDisplay = Button(self, text=7, default=ACTIVE) self.btnDisplay.grid(row=5, column=0, padx=5, pady=5) self.btnDisplay = Button(self, text=8, default=ACTIVE) self.btnDisplay.grid(row=5, column=1, padx=5, pady=5) self.btnDisplay = Button(self, text=9, default=ACTIVE) self.btnDisplay.grid(row=5, column=2, padx=5, pady=5) self.btnDisplay = Button(self, text=*, default=ACTIVE) self.btnDisplay.grid(row=5, column=3, padx=5, pady=5) self.btnDisplay = Button(self, text=0, default=ACTIVE) self.btnDisplay.grid(row=6, column=0, padx=5, pady=5) self.btnDisplay = Button(self, text=C, default=ACTIVE) self.btnDisplay.grid(row=6, column=1, padx=5, pady=5) self.btnDisplay = Button(self, text=r, default=ACTIVE) self.btnDisplay.grid(row=6, column=2, padx=5, pady=5) self.btnDisplay = Button(self, text=/, default=ACTIVE) self.btnDisplay.grid(row=6, column=3, padx=5, pady=5) def Display(self, xbtn): if xbtn==1: print 1 if __name__ == __main__: guiFrame = GUIFramework() guiFrame.mainloop() [/code] If you have this function: def f(): print 1 return 10 and you write: result = f() The '()' is the function execution operator; it tells python to execute the function. In this case, the function executes, and then the return value of the function is assigned to the variable result. If a function does not have a return statement, then the function returns None by default. The same thing is happening in this portion of your code: command = self.Display(1) That code tells python to execute the Display function and assign the function's return value to the variable command. As a result Display executes and 1 is displayed. Then since Dispay does not have a return statement, None is returned, and None is assigned to command. Obviously, that is not what you want to do. What you want to do is assign a function reference to command so that python can execute the function sometime later when you click on the button. A function reference is just the function name without the '()' after it. So you would write: command = self.Display But writing it like that doesn't allow *you* to pass any arguments to Display(). In addition, *tkinter* does not pass any arguments to Display when tkinter calls Display in response to a button
Re: TKinter, buttonwidget response problem(1) and all btns the same size(2)!
On 5 Apr, 07:02, [EMAIL PROTECTED] wrote: On 5 Apr, 05:57, [EMAIL PROTECTED] wrote: On 5 Apr, 05:26, 7stud [EMAIL PROTECTED] wrote: On Apr 4, 7:06 pm, [EMAIL PROTECTED] wrote: 1st question: when i run this program 1 will be printed into the interpreter when i run it BUT without me clicking the actual button. when i then click the button 1, nothing happens. obv i dont want any output when i dont push the button but i want it when i do. what am i doing wrong here? 2nd question: i want all the buttons to have the same size. i thought i should use row/columnspan but i dont get that to work. how should i do? [code] #! /usr/bin/env python from Tkinter import * import tkMessageBox class GUIFramework(Frame): This is the GUI def __init__(self,master=None): Initialize yourself Initialise the base class Frame.__init__(self,master) Set the Window Title self.master.title(Calculator) Display the main window with a little bit of padding self.grid(padx=10,pady=10) self.CreateWidgets() def CreateWidgets(self): self.enText = Entry(self) self.enText.grid(row=0, column=0, columnspan=8, padx=5, pady=5) self.enText = Entry(self) self.enText.grid(row=1, column=0, columnspan=8, padx=5, pady=5) self.btnDisplay = Button(self, text=1, command=self.Display(1)) self.btnDisplay.grid(row=3, column=0, padx=5, pady=5) self.btnDisplay = Button(self, text=2, default=ACTIVE) self.btnDisplay.grid(row=3, column=1, padx=5, pady=5) self.btnDisplay = Button(self, text=3, default=ACTIVE) self.btnDisplay.grid(row=3, column=2, padx=5, pady=5) self.btnDisplay = Button(self, text=+, default=ACTIVE) self.btnDisplay.grid(row=3, column=3, padx=5, pady=5) self.btnDisplay = Button(self, text=4, default=ACTIVE) self.btnDisplay.grid(row=4, column=0, padx=5, pady=5) self.btnDisplay = Button(self, text=5, default=ACTIVE) self.btnDisplay.grid(row=4, column=1, padx=5, pady=5) self.btnDisplay = Button(self, text=6, default=ACTIVE) self.btnDisplay.grid(row=4, column=2, padx=5, pady=5) self.btnDisplay = Button(self, text=-, default=ACTIVE) self.btnDisplay.grid(row=4, column=3, padx=5, pady=5) self.btnDisplay = Button(self, text=7, default=ACTIVE) self.btnDisplay.grid(row=5, column=0, padx=5, pady=5) self.btnDisplay = Button(self, text=8, default=ACTIVE) self.btnDisplay.grid(row=5, column=1, padx=5, pady=5) self.btnDisplay = Button(self, text=9, default=ACTIVE) self.btnDisplay.grid(row=5, column=2, padx=5, pady=5) self.btnDisplay = Button(self, text=*, default=ACTIVE) self.btnDisplay.grid(row=5, column=3, padx=5, pady=5) self.btnDisplay = Button(self, text=0, default=ACTIVE) self.btnDisplay.grid(row=6, column=0, padx=5, pady=5) self.btnDisplay = Button(self, text=C, default=ACTIVE) self.btnDisplay.grid(row=6, column=1, padx=5, pady=5) self.btnDisplay = Button(self, text=r, default=ACTIVE) self.btnDisplay.grid(row=6, column=2, padx=5, pady=5) self.btnDisplay = Button(self, text=/, default=ACTIVE) self.btnDisplay.grid(row=6, column=3, padx=5, pady=5) def Display(self, xbtn): if xbtn==1: print 1 if __name__ == __main__: guiFrame = GUIFramework() guiFrame.mainloop() [/code] If you have this function: def f(): print 1 return 10 and you write: result = f() The '()' is the function execution operator; it tells python to execute the function. In this case, the function executes, and then the return value of the function is assigned to the variable result. If a function does not have a return statement, then the function returns None by default. The same thing is happening in this portion of your code: command = self.Display(1) That code tells python to execute the Display function and assign the function's return value to the variable command. As a result Display executes and 1 is displayed. Then since Dispay does not have a return statement, None is returned, and None is assigned to command. Obviously, that is not what you want to do. What you want to do is assign a function reference to command so that python can execute the function sometime later when you click on the button. A function reference is just the function name without the '()' after it. So you would write: command = self.Display But writing it like that doesn't allow *you* to pass any
