Proposal:
OK, so the python language has officially moved into the next level. I look
at IDLE and think, hmm great IDE but it could really use a spit shining. So
here is a very simple script showing my ideas to improve IDLE.
Reason for change:
The text widget and the prompt(>>>) should be separated. Trying to write a
conditional in the interactive IDLE is a real pain. Not to mention that when
you copy code from Interactive IDLE to the IDLE editor window the indention
is eight spaces instead four and you've got that prompt(>>>) stuck in there.
I have a solution for the problem though.
I hope you are using fixed-width font
Lst|<----- Text Widget ---->|
| |
>>>|if this: |
...| if that: |
...| ... |
...| elif that: |
...| ... |
...| else: |
...| ... |
>>>| |
>>>|x = 10 |
>>>| |
Basically you have a Listbox on the left for the prompt and a Text on the
right. Disable the Listbox highlight and key press events and now we have a
very friendly interactive IDLE! No more prompt hijacking your snippets, and
no more eigtht space indention! Hip-Hip-Hooray!
from Tkinter import *
class CMD(Toplevel):
def __init__(self, master, glo, loc):
Toplevel.__init__(self, master)
self.glo = glo
self.loc = loc
self.master = master
self.startidx = '1.0'
self.transient(master)
self.lift(master)
self.title('IDLE 3000')
self.listbox = Listbox(self, width=3, relief=FLAT, font=('Courier
New',12), takefocus=0)
self.listbox.pack(fill=Y, side=LEFT)
self.listbox.insert(0, '>>>')
self.text = Text(self, relief=FLAT, spacing3=1, wrap=NONE,
font=('Courier New',12))
self.text.pack(fill=BOTH, side=LEFT, expand=1)
self.text.config(width=50, height=10)
self.text.focus_set()
self.listbox.bind("<KeyPress>" , lambda e: "break")
self.listbox.bind("<Button-1>" , lambda e: "break")
self.listbox.bind("<B1-Motion>" , lambda e: "break")
self.listbox.bind("<ButtonRelease-1>" , lambda e: "break")
self.listbox.bind("<B2-Motion>" , lambda e: "break")
self.text.bind('<Next>' , lambda e: "break")#pageup
self.text.bind('<Prior>' , lambda e: "break")#pagedown
self.text.bind('<Delete>' , lambda e: "break")
self.text.bind('<Control-Home>' , lambda e: "break")
self.text.bind('<Control-End>' , lambda e: "break")
self.text.bind("<B2-Motion>" , lambda e: "break")
self.text.bind('<Button-2>' , lambda e: "break")
self.text.bind("<MouseWheel>" , lambda e: "break")
self.text.bind("<Up>" , self.onUp)
self.text.bind("<Down>" , self.onDown)
self.text.bind("<Tab>" , self.onTab)
self.text.bind("<Return>" , self.onReturn)
self.text.bind("<BackSpace>", self.onBackSpace)
def on_quit(self):
self.grab_release()
if self.master:
self.master.focus_set()
self.destroy()
def onTab(self, event=None):
curline, cursor = self.text.index(INSERT).split('.')[0]+'.0',
self.text.index(INSERT)
self.text.insert(INSERT, ' ')
return "break"
def onDown(self, event):
i = self.text.index(INSERT+'+1l') #;print 'New index: ', i
self.text.mark_set(INSERT, i)
self.text.see(i)
self.listbox.see(int(i.split('.')[0])-1)
return "break"
def onUp(self, event):
i = self.text.index(INSERT+'-1l') #;print 'New index: ', i
self.text.mark_set(INSERT, i)
self.text.see(i)
self.listbox.see(int(i.split('.')[0])-1)
return "break"
def fix_index(self, chars):
self.text.insert(END, '\n')
self.text.mark_set(INSERT, END)
self.text.see(INSERT)
self.listbox.insert(END, chars)
self.listbox.see(self.listbox.size())
def onBackSpace(self, event=None):
if self.text.compare(self.text.index(INSERT), '!=', self.startidx):
self.text.delete(self.text.index(INSERT+'-1c'))
return "break"
def onReturn(self, event=None):
curline, cursor = self.text.index(INSERT).split('.')[0]+'.0',
self.text.index(INSERT)
text = self.text.get(self.startidx, END).strip()
if self.text.compare(curline, '<', self.startidx):#'Out Of Zone'
self.text.mark_set(INSERT, END+'-1c')
self.text.see(INSERT)
self.listbox.see(END)
elif '.0' in cursor: #nothing typed on this line, try to exec
command
cmd = text.rstrip('\n')
try:
exec(cmd, self.glo, self.loc)
except:
self.master.bell()
print '%s\n%s\n%s' %(sys.exc_traceback, sys.exc_type,
sys.exc_value)
finally:
self.fix_index('>>>')
self.startidx = self.text.index(INSERT)
elif text != '':#something typed
self.fix_index('...')
else: #insert newline
self.fix_index('>>>')
return "break"
if __name__ == '__main__':
print 'main'
root = Tk()
cmd = CMD(root, globals(), locals())
root.mainloop()
Issue #2:
When you press MMB and there is a highlighted selection in the text it gets
pasted over and over again @ the insertion cursor. This can be aggravating,
and turn a clean script into a bowl of "Cheerios" breakfast cereal in no
time.
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