Re: Convert the decimal numbers expressed in a `numpy.ndarray` into a matrix representing elements in fractional form
> hongy... wrote > > This method doesn't work, as shown below: > ? b > > [0.0, -1.0, 0.0, 0.25] > [1.0, 0.0, 0.0, 0.25] > [0.0, 0.0, 1.0, 0.25] > [0.0, 0.0, 0.0, 1.0] > > a > > 0 0 0 1 > # --- Using debian 11.3 bullseye python 3.9 numpy 1,21,5 Code as I posted in my reply dated 2022-05-18 $ python3 np_array_to_fractions_2.py b [0.0, -1.0, 0.0, 0.25] [1.0, 0.0, 0.0, 0.25] [0.0, 0.0, 1.0, 0.25] [0.0, 0.0, 0.0, 1.0] a 0 -1 0 1/4 1 0 0 1/4 0 0 1 1/4 0 0 0 1 -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: Convert the decimal numbers expressed in a `numpy.ndarray` into a matrix representing elements in fractional form
#!/usr/bin/env python3
'''
NewsGroup comp.lang.python
Subject .. Convert the decimal numbers
expressed in a numpy.ndarray
into a matrix representing elements
in fractiona
Date . 2022-05-16
Post_By .. hongy...
Edit_By .. Stanley C. Kitching
'''
import numpy as np
from fractions import Fraction
b = [
[ 0.0 , -1.0 , 0.0 , 0.25 ] ,
[ 1.0 , 0.0 , 0.0 , 0.25 ] ,
[ 0.0 , 0.0 , 1.0 , 0.25 ] ,
[ 0.0 , 0.0 , 0.0 , 1.0 ] ]
a = [ ]
print( '\n b \n' )
for row in b :
arow = []
print( '' , row )
for dec_x in row :
frac_x = Fraction( dec_x )
arow.append( frac_x )
a.append( arow )
# using f-string format
print( '\n a \n' )
for row in a :
for item in row :
print( f'{item} ' , end = '' )
print()
# --
--
Stanley C. Kitching
Human Being
Phoenix, Arizona
--
https://mail.python.org/mailman/listinfo/python-list
Re: Suggestion for Linux Distro (from PSA: Linux vulnerability)
Cousin Stanley wrote: >> apt-cache search lxqt | grep ^lxqt Chris Angelico wrote: > Much faster: > > apt-cache pkgnames lxqt > > apt-cache search will look for "lxqt" in descriptions too, > hence the need to filter those out > > apt-cache pkgnames is used by tab completion) > Thanks I didn't know about using pkgnames with apt-cache. -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: Suggestion for Linux Distro (from PSA: Linux vulnerability)
Marco Sulla wrote: >> >> Maybe Debian itself? > > I tried Debian on a VM, but I found it too much basical. A little > example: it does not have the shortcut ctrl+alt+t to open a terminal > that Ubuntu has. I'm quite sure it's simple to add, but I'm starting > to be old and lazy... > I use the current stable release of Debian 11.2 Bullseye with the lxqt desktop environment [Ctrl]-[Alt]-[T] will open a new qterminal window. The following will display a list of lxqt packages that are in the repository and available to install apt-cache search lxqt | grep ^lxqt -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: Python LSTM forecast future values for time series
Jorge Conforte wrote: > > I'm starting run the LSTM to forecast future values for time serie data. > > please can someone give me some information > on how i can predict future values > for my time series using LSTM. Thanks, Conrado I cannot personlly help but a google search using the following phrase seems promising lstm predict future values -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: What to write or search on github to get the code for what is written below:
Dennis Lee Bieber wrote: > Ignoring the code spam I presume > I'm an sqlite user myself and was glad to see the code you posted and have a couple of tiny example book/author sql3 databases but nothing resembling an actual library check in/out program I've never used PySimpleGUI but it does look interesting https://pysimplegui.readthedocs.io/en/latest/ https://pypi.org/search/?q=pysimplegui After you complete your BookDepository DataBase development perhaps you would consider making it publically available for others to learn from -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: What to write or search on github to get the code for what is written below:
Dennis Lee Bieber wrote: > > How would you do this assignment on paper ? > Your patience and willingness to help and guide someone else with such a complete and understanable post is hihgly commendable. Thanks -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: Where is the problem?
RD wrote: > In article , cousinstan...@gmail.com says... > > [snip] > >> I have a couple of postscript saving examples >> that include the following geometry parameters >> which produce .ps files that render the same >> as the canvas drawings when viewed in ghostsript. > >> retval = canvas.postscript( >>file = "image/ps/xyzzy.ps , >>height = 400 , >>width = 400 , >>pagewidth = 400 , >>pageheight = 400 , >>colormode = "color" ) > > [snip] > > Wow! It worked! Thankyouthankyouthankyou. > > RD You're welcome You're Welcome You're Welcome -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: Where is the problem?
RD wrote: > Python 3.4.3 on WinXP. > > I create a Tk canvas and draw on it with create_text(), > create_line(), and create_polygon with fill and stipple. > > So far, so good, looks fine on the screen. > > So I go to send it to a postsctript file: > > bmap.postscript(file="tmp.ps", colormode='color') > > It generates a file, no errors reported. > > So I open up the file in a PS viewer (2, actually), > and the saved file looks like someone left a > watercolor out in the rain. > > Artifacts everywhere, the lines are blurred, and the > text is unreadable. > > Googling was unhelpful; did I miss something? > > TIA I have a couple of postscript saving examples that include the following geometry parameters which produce .ps files that render the same as the canvas drawings when viewed in ghostsript. retval = canvas.postscript( file = "image/ps/xyzzy.ps , height = 400 , width = 400 , pagewidth = 400 , pageheight = 400 , colormode = "color" ) Perhaps adding the geomerty parameters might help. -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: issue with seaborn
Dino wrote: > trying to do some dayaviz with Italian Covid Open Data ( > https://github.com/italia/covid19-opendata-vaccini/ ) > > here's how I pull my data: > > import sys > import urllib.request > import pandas as pd > import ssl > ssl._create_default_https_context = ssl._create_unverified_context > > URL = > "https://github.com/italia/covid19-opendata-vaccini/blob/master/dati/somministrazioni-vaccini-latest.csv?raw=true; > > with urllib.request.urlopen(URL) as url: > df = pd.read_csv(url) > > > One of my diagrams came out screwed up today, and I am having a hard > time understanding what went wrong: > > https://imgur.com/a/XTd4akn > > Any ideas? > I first downloaded a local copy of the .csv file using wget URL Then the python code below following the plot parameters shown in your imgur.com image which was executed in a jupyter notebook # it_covid.py --- import pandas as pd import seabornas sns import numpy as np import matplotlib.pyplot as plt df = pd.read_csv( 'data/somministrazioni-vaccini-latest.csv' ) plt.figure( figsize = ( 20 , 10 ) ) plt.xticks( rotation = 70 ) sns.lineplot( x= "data_somministrazione" , y= "prima_dose" , data = df , hue = "nome_area" , ci = None ) plt.show() # --- The resulting plot doesn't seem to be cluttered as the one that you posted http://csphx.net/image/it_covid.png -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: Seeking guidance to start a career in python programming
ankur gupta wrote: > Good Morning to All, > My name is Ankur Gupta and I wish to seek guidance from you. > > I belong to a non-computer science background > but have always been attracted to this field. > > I had computer science in class 12th ( Where I learned C++ > and Python ) but I did Mechanical Engineering instead in college. > > I wish to pursue a career in Python programming > and therefore undertook 2 online certification courses > in python but besides this, my progress is almost stalled. > > Request you all to please guide how I can move forward > with my current learning of the language and also steps > that I can take to pursue a career in this field. Mechanical Engineers are needed in an almost endlessly wide array of applications ... from nano-bots in bio-engineering to space-bots sampling soil samples on asteroids You might consider applying the Python knowledge that you have acquired to endeavors in the field that you are most familar with. -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: How do I get datetime to stop showing seconds?
Steve wrote: > d2 = datetime.datetime.now() #Time Right now > > Show this: 2020-10-16 02:53 > and not this: 2020-10-16 02:53:48.585865 > > > == > Footnote: > If you double major in psychology and reverse psychology, to they cancel > each other out? > > -- py> py> import datetime as dt py> py> d = dt.datetime.now().strftime( '%Y-%m-%d %H:%M' ) py> py> print( '\n ' , d ) 2020-10-16 07:22 -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: How do I place a preset into the text box?
Steve wrote: > The following program compiles but does not quite do what I would like it to > do. Line 19 is the preset information but I do not seem to be able to get it > into the form by code. My purpose is to let the user make changes without > having to re-enter the entire code. > You might consider moving the entry get() function into the Submit() call back def Submit() : label.configure( text = 'The new code is : ' + NewCode.get() ) x = ( NewCode.get() ) print( "\n The new code entered is : " + x ) The following insert function will show the OldCode in the entry box OldCode = ( "1234-abcd" ) # CodeEntered = ttk.Entry( window , width = 15 , textvariable = NewCode ) CodeEntered.grid( column = 2 , row = 3 , pady = 10 ) CodeEntered.insert( 0 , OldCode ) -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: Button press event - event handling and picking: IndexError: list index out of range
Caledonian26 wrote: > However, I keep getting the error: > > IndexError: list index out of range. > > Could anyone give me a helping hand > as to where I am going wrong? > I appended a single arbitrary value for limits since the limits list had not been previously initialized colourofbars = [ ] for key , value in dict_means.items() : limits.append( 3000 ) if limits[ 0 ] > ( key + ( value ) ) : This fix gets past the index out of range error and produces a plot which might let you proceed to the next problem you might encounter -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: Floating point issue
Aakash Jana wrote:
> I am calculating couple of ratios and according to the problem
> there must be a 6 decimal precision.
>
> But when I print the result I only get one 0.
>
> E.g:- 2 / 5 = 0.40 but I am only getting 0.4
You might try using a ' '.format string
ratios = {
'1/8' : 1/8 ,
'1/5' : 1/5 ,
'1/4' : 1/4 ,
'1/3' : 1/3 ,
'2/5' : 2/5 ,
'5/9' : 5/9 ,
'2/3' : 2/3 ,
'4/5' : 4/5 ,
'7/8' : 7/8 ,
'9/5' : 9/5 ,
'22/7' : 22/7 }
print()
for fraction , ratio in ratios.items() :
print( ' {:4s} {:.6f} '.format( fraction , ratio ) )
--
Stanley C. Kitching
Human Being
Phoenix, Arizona
--
https://mail.python.org/mailman/listinfo/python-list
Re: How to get filesystem in python.
Antoon Pardon wrote: > I would like to get the information given by the df command on linux/unix. > I found the os.statvfs call, but it misses one thing: The filesystem. > > Does anyone know how to get that information. > import os pipe_in = os.popen( 'df -h -T -x tmpfs -x devtmpfs' ) list_source = pipe_in.readlines() for this_item in list_source[ 1 : ] : this_list = this_item.strip().split() file_sys = this_list[ 0 ] file_type = this_list[ 1 ] size = this_list[ 2 ] used = this_list[ 3 ] avail = this_list[ 4 ] used_pc = this_list[ 5 ] mounted = this_list[ 6 ] -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: upgrading python on raspbian
Gene Heskett wrote: > Continueing this thread, I now have a missing function by name, "units", > that is preventing LinuxCNC from running. > > Where in the python 3 world do I find that function?, > Under debian buster there is a python 2 package called python-quantities that apparently deals with units via numpy dependencies. $ apt-cache show python-quantities Package: python-quantities Version: 0.12.1-1 Priority: optional Section: python Maintainer: Debian Science Maintainers Installed-Size: 358 kB Depends: python (<< 2.8), python (>= 2.7), python:any (>= 2.6.6-7~), python-numpy Suggests: python-unittest2 Description-en: Library for computation of physical quantities with units, based on numpy Quantities is designed to handle arithmetic and conversions of physical quantities, which have a magnitude, dimensionality specified by various units, and possibly an uncertainty. Quantities builds on the popular numpy library and is designed to work with numpy ufuncs, many of which are already supported. Also $ apt-files list python-quantities Shows a units sub-directory under /usr/lib/python2.7/dist-packages with several individual modules such as force, length, mass, pressue, temperature, etc. Seems to be also available throug the python package index https://pypi.org/project/quantities/ $ pip install quantities I have no personal expeience with this package. -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: question about making an App for Android
Cousin Stanley wrote: > There is also a useful python package > called sunset which I fouund a reference to > on stackoverflow Maybe I'll wake up some time today :-) The python package is called suntime not sunset # pip3 show suntime -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: question about making an App for Android
Cousin Stanley wrote: > > d_sse = sse_sunset - sse_sunrise # seconds of daylight > I think it might be required to convert utc time to local time for the difference in sunrise and sunset times to make sense in local time -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: question about making an App for Android
Chris Angelico wrote:
> Or maybe it's really simple, because there's an HTTP API
>that > gives you the information.
>
> There's an API for everything these days.
>
> A quick web search showed up this:
>
> https://sunrise-sunset.org/api
>
There is also a useful python package
called sunset which I fouund a reference to
on stackoverflow
https://stackoverflow.com/questions/38986527/sunrise-and-sunset-time-in-python/38986561
# pip3 install sunset
# pip 3 show sunset
os pip3 show suntime
Name: suntime
Version: 1.2.5
Summary: Simple sunset and sunrise time calculation python library
Home-page: https://github.com/SatAgro/suntime
Author: Krzysztof Stopa
Author-email: None
License: LGPLv3
Location: /usr/local/lib/python3.7/dist-packages
Requires: python-dateutil
Required-by:
If latidude and longitude are known
sunrise and sunset times are available
$ cat daylight_phoenix.py
#!/usr/bin/env python3
'''
NewsGroup comp.lang.python
Subject .. question about maiking an App for Android
Date . 2019-10-10
Post_By .. pyotr filipivich
Code_By .. Stanley C. Kitching
Code_Date 2019-10-10
'''
import time
import datetime as dt
from suntime import Sun , SunTimeException
# Phoenix, Arizona
latitude = 33.4484 # ° N
longitude = 112.0740# ° W
sun = Sun( latitude , longitude )
# Get today's sunrise and sunset in UTC
sunrise = sun.get_sunrise_time()
sunset = sun.get_sunset_time()
sse_sunrise = sunrise.timestamp() # sunrise seconds since epoch
sse_sunset = sunset.timestamp() # sunset seconds since epoch
d_sse = sse_sunset - sse_sunrise # seconds of daylight
print( '\n Today in Phoenix ' )
print( '\n sunrise : ' , sunrise , ' ' , sse_sunrise )
print( '\n sunset : ' , sunset , ' ' , sse_sunset )
print( '\ndaylight : {} seconds '.format( d_sse ) )
# -
--
Stanley C. Kitching
Human Being
Phoenix, Arizona
--
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Re: Enumerate - int object not subscriptable
Sayth Renshaw wrote:
> I want to do basic math with a list.
>
> a = [1, 2, 3, 4, 5, 6, 7, 8]
>
> for idx, num in enumerate(a):
> print(idx, num)
>
> This works, but say I want to print the item value
> at the next index as well as the current.
>
> for idx, num in enumerate(a):
>
> print(num[idx + 1], num)
>
#!/usr/bin/env python3
# sum each adjacent pair of elements in a list
ls = list( range( 10 , 1 , -1 ) )
print('\n ' , ls , '\n' )
for enum , n in enumerate( range( len( ls ) - 1 ) ) :
i_left , i_rite = ls[ n : n + 2 ]
i_tot = i_left + i_rite
print( ' {:2d} : {:2d} + {:2d} = {:4d} '.format( enum , i_left , i_rite
, i_tot ) )
--
Stanley C. Kitching
Human Being
Phoenix, Arizona
--
https://mail.python.org/mailman/listinfo/python-list
Re: Make sure the window title is visible in tkinter
Cousin Stanley wrote >> You might try setting a given window geometry >> to accomodate the long title >> >> win_w = 400 >> win_h = 300 >> >> ofs_h = 40 >> ofs_v = 30 >> >> window.geometry( "%dx%d+%d+%d" % ( win_w , win_h , ofs_h , ofs_v ) ) >> >> >> Maybe add a bit of extra space for users >> with different default font sizes >> >> Not a general solution >> but perhaps workable moi wrote > No, huge mistake. It isn't clear to me how specifying a particular geometry for one's own self-coded tkinter gui prgrams with windows that are resize-able would be a mistake > Take for example the Windows installer. > > The window is so small, you can not even read the path > where Python will be installed. > > Bonus: the windows is not resizable and part of items > are not even visible. > > It would be to bad to not mimic this behavior. > > Just tested it 2 min ago on my Windows 7.1 with py3.7.3. I didn't suggest modifying 3rd party programs, but the suggestion I offered was meant to be applied to one's own code I have used a given geometry for dozens of my own tkinter gui programs such that a modest window size which assures that all widgets are viewable when first presented to the user -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: Make sure the window title is visible in tkinter
Cecil Westerhof wrote:
> I need to write a desktop program. I choose to use tkinter.
>
> How can I make sure the window title is visible? For example
> when I have the following code :
> from tkinter import Button, filedialog, Label, messagebox, Tk
>
>
> window = Tk()
> window.title('A long window title')
> Button (window, text = 'Short text').pack()
> window.mainloop()
>
> I see only a part of the 'A', but I would like to see
> the complete :
>
> 'A long window title'
>
You might try setting a given window geometry
to accomodate the long title
win_w = 400
win_h = 300
ofs_h = 40
ofs_v = 30
window.geometry( "%dx%d+%d+%d" % ( win_w , win_h , ofs_h , ofs_v ) )
Maybe add a bit of extra space for users
with different default font sizes
Not a general solution
but perhaps workable
--
Stanley C. Kitching
Human Being
Phoenix, Arizona
--
https://mail.python.org/mailman/listinfo/python-list
Re: polar coordinates?
Brian Christiansen wrote: > > I guess my question is if python can do this natively > or if there is a package somewhere ( polar.py ? ) that can do this > You might consider matplotlib for polar coordinate plotting ... https://matplotlib.org/examples/pylab_examples/polar_demo.html -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: Program to keep track of success percentage
Musatov wrote: > I am thinking about a program where the only user input is win/loss. > > The program let's you know if you have won > more than 31% of the time or not. > > Any suggestions about how to approach authoring > such a program? Thanks. The following results are from a python toss_up program using the python random.choice module where win or lose was chosen randomly for each try for various numbers of tries For random choice of win or lose distribution seems to be very even for each result # tries win % lose % 10 50.0050.00 100 52.0048.00 1000 48.4051.60 1 49.7550.25 10 50.1749.83 100 50.0050.00 -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: [Tutor] SyntaxError: can't assign to literal while using ""blkid -o export %s | grep 'TYPE' | cut -d"=" -f3" % (fs)" using subprocess module in Python
srinivasan wrote: > Even after changing as per the below > "blkid -o export %s | grep 'TYPE' | cut -d'=' -f3" > or: > 'blkid -o export %s | grep "TYPE" | cut -d"=" -f3' > or: > "blkid -o export %s | grep \"TYPE\" | cut -d\"=\" -f3" > > Still my output is: > */dev/mmcblk1p1: LABEL="efi" UUID="1084-AA42" TYPE="vfat"* > > My expected output should be only: > *vfat* > > Could you guys please do the needful? I tried a simiar command line from a rock64 sbc shell and found that -f2 instead of -f3 returned only vfat -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: How to move the scrollbar to inside the text widget
moidee...@gmail.com wrote:
> I am a Newbie
>
> I have this code
>
> from tkinter import *
>
> root = Tk()
> root.geometry("1200x1000+30+30")
> # width x height + x_offset + y_offset:
> T = Text(root, height=10, width=100)
> T.place(x=20, y=30)
> for i in range(40):
>T.insert(END, "This is line %d\n" % i)
>
> # create a vertical scrollbar to the right of the listbox
> yscroll = Scrollbar(command=T.yview, orient=VERTICAL)
> T.configure(yscrollcommand=yscroll.set)
> yscroll.pack(side="right", fill="y", expand=False)
>
> root.mainloop()
>
>
> The srollbar is on the window frame, is there a way I can move it to inside
> and right edge of
> text area?
>
> Thanks
You might try the tkinter ScrolledText widget
from tkinter import *
from tkinter import scrolledtext as ST
root = Tk()
root.geometry( "1200x1000+30+30" ) # width x height + x_offset + y_offset
T = ST.ScrolledText( root, height=40, width=100, font=( 'Fixed' , 14 ) )
T.place( x = 20 , y = 30 )
for i in range( 101 ) :
T.insert( END , " This is line %03d\n" % i )
.
include the rest of your orignal code
.
--
Stanley C. Kitching
Human Being
Phoenix, Arizona
--
https://mail.python.org/mailman/listinfo/python-list
Re: Problem: Need galileo running on debian wheezy
Gene Heskett wrote: > > And the rock64 doesn't have wifi hardware > that I know of. > I did manage to get wifi working on my rock64 using a usb wifi dongle ordered from their store It was a bit fiddly to set up, somewhat shaky connection-wise, and slower than I was comfortable with so I went with an ethernet connection which is quick and stable > So, is galileo shown for armhf's ? The galileo package information doesn't explicitly mention arm However, I've had no problem with any other python package on the rock64 here dpkg-print-architecture indicates that it is arm64 and I pull the debian stretch packages and updates from o http://mirrors.kernel.org/debian/ stretch main non-free contrib o http://mirrors.kernel.org/debian/ stretch-updates main contrib non-free o http://ppa.launchpad.net/ayufan/rock64-ppa/ubuntu xenial main > The reason for posting here is that galileo > is supposedly written in python, > but don't know if 2 or 3. The stretch package depends information for galileo indicates it is for python3 $ apt-cache show galileo Depends: python3-requests (>= 2), python3-usb (>= 1.0.0~b2), python3:any (>= 3.4~) -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: Problem: Need galileo running on debian wheezy
Gene Heskett wrote: > I know its supposed to be in the debian stretch repo's. > > I've been told to get a fitbit, but they don't support linux > of any flavor, and that leaves galileo as the possible solution? > > So how should I proceed since the only stretch machine I have ATM > is an arm64, aka a rock64. The galileo package is available under debian stretch on my rock64 # apt-cache policy galileo galileo: Installed: (none) Candidate: 0.5.1-4 Version table: 0.5.1-4 500 500 http://approx:/debian stretch/main arm64 Packages Package details # apt-cache show galileo However, I have no clue as to its usage or effectiveness -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: enum
ast wrote:
> https://docs.python.org/3.5/library/enum.html#planet
>
> Documentation says that the value of the enum
> members will be passed to this method.
>
> But in that case __init__ waits for two arguments, mass
> and radius, while enum member's value is a tuple.
>
> It seems that there is a tuple unpacking, but it is
> not documented, that's not clear
>
I added the following code to your example
to unpack planet.value into mass and radius
after first importing Enum
from enum import Enum
def test_01() :
print( '\n planet mass radius gravity \n' )
for planet in Planet :
mass , radius = planet.value
print( ' {:8s} {:9.4E} {:9.4E} {:9.4E} '.format( planet.name , mass
, radius ,
planet.surface_gravity ) )
if __name__ == '__main__' :
test_01()
A working copy
http://csphx.net/python/planets_enum.txt
--
Stanley C. Kitching
Human Being
Phoenix, Arizona
--
https://mail.python.org/mailman/listinfo/python-list
Re: Get min and max dates
DFS wrote:
>
> Not wanting to use any date parsing libraries,
>
If you happen reconsider date parsing libraries
the strptime function from the datetime module
might be useful
#!/usr/bin/env python3
from datetime import datetime
dates = [ '10-Mar-1998' ,
'20-Aug-1997' ,
'06-Sep-2009' ,
'23-Jan-2010' ,
'12-Feb-2010' ,
'05-Nov-2010' ,
'03-Sep-2009' ,
'07-Nov-2014' ,
'08-Mar-2013' ]
dict_dates = { }
print( )
for this_date in dates :
dt = datetime.strptime( this_date , '%d-%b-%Y' )
sd = dt.strftime( '%Y-%m-%d' )
print( ' {0} {1}'.format( this_date , sd ) )
dict_dates[ sd ] = this_date
min_date = min( dict_dates.keys() )
max_date = max( dict_dates.keys() )
print( '\n {0} {1} min'.format( dict_dates[ min_date ] , min_date ) )
print( '\n {0} {1} max'.format( dict_dates[ max_date ] , max_date ) )
--
Stanley C. Kitching
Human Being
Phoenix, Arizona
--
https://mail.python.org/mailman/listinfo/python-list
Re: Python Dice Game/Need help with my script/looping!
Constantin Sorin wrote: > Hello,I recently started to make a dice game in python. > > Everything was nice and beautiful,until now. > > My problem is that when I try to play and I win or lost > or it's equal next time it will continue only with that. > Following is a link to a version of your code rewritten to run using python3 http://csphx.net/fire_dice.py.txt The only significant differences between python2 and python3 in your code are python2 . python3 print ... print( ) raw_input( ) ... input( ) Bob Gailer wrote: > > The proper way to handle this > is to put the entire body of game() > in a while loop. > > Since the values of e and f are not changed in the loop > he will continue to get the same thing. > These changes are the key to making the program loop as desired All other changes are mostly cosmetic * Note * I am partial to white space both horizontal and vertical ... :-) -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: Stupid question, just need a quick and dirty fix
Jordan Bayless wrote:
>
> desired = Id < 10 or Id > 133 or Id in good_ids
>
> When I try to validate whether I passed that check,
> I'm told there's a Name error and it's not defined
>
On the outside chance that failing to define Id
produces the Name error, I defined Id in a for loop
as a test for your copy/pasted code
$ cat id_test.py
#!/usr/bin/env python3
good_ids = {
2, 3, 4, 5, 6, 7, 8, 9, 12, 15, 24, 25, 26, 27, 28, 31, 34, 35, 36, 37,
38, 39, 40, 45, 50, 51, 53, 55, 56, 57, 59, 62, 65, 68, 71, 76, 78, 80,
82, 83, 87, 88, 89, 91, 93, 94, 96, 97, 101, 103, 105, 106, 107, 109,
110, 112, 113, 115, 122, 124, 125, 126, 130, 131, 132, 134, 135, 136,
137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150,
151
}
test_ids = [ 1 , 10 , 128 , 42 , 137 , 444 ]
print( )
for Id in test_ids :
desired = Id < 10 or Id > 133 or Id in good_ids
print( ' Id : %4d desired : %s ' % ( Id , desired ) )
$ ./id_test.py
Id : 1 desired : True
Id :10 desired : False
Id : 128 desired : False
Id :42 desired : False
Id : 137 desired : True
Id : 444 desired : True
--
Stanley C. Kitching
Human Being
Phoenix, Arizona
--
https://mail.python.org/mailman/listinfo/python-list
Re: Assignment Versus Equality
Dennis Lee Bieber wrote: > > but I'm sure we'd have a revolt > if Python comparison operators looked like: > > a .eq. b > a .ne. b > a .gt. b .or. c .lt. d > a .le. b .and. c .ge. d > As someone who learned fortran in the mid 1960s and pounded a lot of fortran code in the 1970s, the code above seems very readable -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: Guys, can you please share me some sites where we can practice python programs for beginners and Intermediate.
DFS wrote: > On 6/23/2016 11:11 AM, Cousin Stanley wrote: >> DFS wrote: >> >>> Here's a fun one: scraping data off a website, >>> and storing it in a SQLite database file. >>> >> >> After testing your example code here I found >> that the length of the categories list >> was 1 less than the terms list after applying >> dropwords in the terms list comprehension >> >> The subsequent len comparison then failed >> and no data was inserted into the data base >> >> As a fix I added an extra category >> >> category.append( 'didly' ) >> >> Subsequently, data was inserted >> with a single extra category >> for the last term in terms > > > Strange! After dropwords, the list lengths match > for me (both are 152). > Found 153 for terms and 152 for categories, so I appended 1 to categories ... > So in your table, is 'didly' now the category for the last term > 'Rendering'? Mine is 'Technical', as it is on the source webpage. Last 5 printed from the final loop just before the db insert Passphrase , Technical Passcode , Technical Touchpad , Hardware Rendering , Technical Terms of Use , didly > > I usually put list length tests in place, > not sure what happened here. Possibly a copy/paste difference on my end -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: Guys, can you please share me some sites where we can practice python programs for beginners and Intermediate.
DFS wrote: > Here's a fun one: scraping data off a website, > and storing it in a SQLite database file. > After testing your example code here I found that the length of the categories list was 1 less than the terms list after applying dropwords in the terms list comprehension The subsequent len comparison then failed and no data was inserted into the data base As a fix I added an extra category category.append( 'didly' ) Subsequently, data was inserted with a single extra category for the last term in terms Thanks for posting the example code -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: [OT'ish] Is there a list as good as this for Javascript
> Occasionally I have to make forays into Javascript, > can anyone recommend a place similar to this list > where Javascript questions can be asked ? Several years back I found the newsgroup comp.lang.javascript to be helpful However, I haven't used that group for some time now so don't know the current nature of the group -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: pygtk2 and colors
With python 2.7.5, pygtk 2.24, gtk 2.24: The following snippet successfully sets the line_width but not the foreground color, and I can't figure-out why. The color human-name and the result returned by gtk.gdk.color_parse are correct. Clues? Thanks. self.gc.set_line_attributes(myclass.board_line_width, gtk.gdk.LINE_SOLID, gtk.gdk.CAP_ROUND, gtk.gdk.JOIN_BEVEL) fg = gtk.gdk.color_parse(myclass.board_foreground) self.gc.set_foreground(fg) You might try self.set_rgb_fg_color( fg ) Example from ... http://www.linuxplanet.com/linuxplanet/tutorials/6750/2/ -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: Classic OOP in Python
python -m doctest application.py And from there, I would build up extra doc tests An extra doc test that fails #!/usr/bin/env python NewsGroup comp.lang.python Subject .. Classic OOP in Python Date . 2015-06-17 Post_By .. Steven D'Aprano Edit_By .. Stanley C. Kitching def bracket( s ) : Return string s bracketed in parentheses. bracket( Hello ) '(Hello)' bracket( Yo Mama is a Perl Monkey ) '(Yo Mama is a Java Monkey') return (%s) % s -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: Python Worst Practices
From : Tim Chase A quick google-and-tally for languages and their corresponding number of keywords: re-sorted 21 : Lua 31 : Python2.x 33 : Python3.x 33 : C 37 : Pike 40 : Perl 40 : Ruby 50 : Java 54 : Pascal 67 : PHP 77 : C# 86 : C++ -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: pyqtgraph window position
I can control the size of my pyqtgraph window below with 'resize'. But how can I control the position on the screen? Also, try w.setGeometry( x_pos , y_pos , width , height ) -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: pyqtgraph window position
I can control the size of my pyqtgraph window below with 'resize'. But how can I control the position on the screen ? import pyqtgraph as pg w = pg.GraphicsWindow() w.resize(250,400) for i in range(4): w.addPlot(0, i) def onClick(event): but=event.button() print(but: ,but) w.scene().sigMouseClicked.connect(onClick) try pos_x = 300 pos_y = 400 w.move( pos_x , pos_y ) -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: Cairo module
You might consider using python-imaging to display the image after writing it from cairo import image import statement should be import Image note uppercase I -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: Cairo module
Could matplotlib be used to show the image? You might consider using python-imaging to display the image after writing it from cairo import image surface.write_to_png ( x_surface.png ) img = Image.open( x_surface.png ) img.show( command = 'display' ) -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: Beginner question - class definition error
from kivy.app import App from kivy.uix.label import Label class MyApp(App): def build(self): return Label(text='Hello World') if __name__ == '__main__': MyApp().run() I get this error when I run it: Traceback (most recent call last): File MinimalApplication.py, line 7, in module class MyApp(App): File MinimalApplication.py, line 12, in MyApp MyApp().run() NameError: name 'MyApp' is not defined How can I fix this please? Try removing beginning indentation from if __name__ == '__main__': if __name__ == '__main__': -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: Glade/Python - positioning main window at startup
Problem: Can anyone help me find settings (either in Glade or elsewhere) which will start the application window with the application window center aligned with the desktop center ? You might try the following entry in your .glade file property name=window_positioncenter/property -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: pack circles into a partial annulus
I need to pack circles into a partial annulus ie part of a larger circle bounded by two radii and angles of say 18 90. You might take a look at Descartes Circle Theorem http://en.wikipedia.org/wiki/Descartes'_theorem Blub from google search In geometry, Descartes' theorem states that for every four kissing, or mutually tangent, circles, the radii of the circles satisfy a certain quadratic equation. By solving this equation, one can construct a fourth circle tangent to three given, mutually tangent circles. There is a screen saver in Debian Linux named Apollonian that uses this algorihm packing smaller circles into a larger circle The C source code for this screen saver is available under Debian -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: Dictionaries with variable default.
So How should I call this:
class ...dict(dict):
def __init__(self, fun):
self.fun = fun
def __missing__(self, key):
return self.fun(key)
I don't know how you should,
but I tried the following
which seems to work
class KeyPlusOne( dict ) :
def __missing__( self , key ) :
return ( 2 * key ) + 1
kp1 = KeyPlusOne()
d = { }
for n in range( 11 ) :
d[ n ] = kp1[ n ]
print '\n key : value \n'
for key , value in d.iteritems() :
print '%2d : %2d' % ( key , value )
--
Stanley C. Kitching
Human Being
Phoenix, Arizona
--
https://mail.python.org/mailman/listinfo/python-list
Re: [ANN] dbf v0.96 is released
dbf === dbf (also known as python dbase) is a module for reading/writing dBase III, FP, VFP, and Clipper .dbf database files. Available via PyPI at ? https://pypi.python.org/pypi/dbf/0.96.001 -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: Top down Python
3) Create terminal window with size 64x20 (which, IMO, is tiny) Maybe 64 characters x 20 lines -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: need to print seconds from the epoch including the millisecond
On 30/12/2013 12:16, matt.doolittl...@gmail.com wrote: thanks a bunch. the %.6f was the cure. can you please point me to the doc for formatting time? Thanks! Would you please read and action this https://wiki.python.org/moin/GoogleGroupsPython to prevent us seeing the double line spacing above, thanks. You might consider either turning off an option in your news client for including message in reply and/or snipping all but a few lines for context to prevent us from seeing the double line spacing all over again :-) -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: need to print seconds from the epoch including the millisecond
You might consider either turning off an option in your news client for including message in reply and/or snipping all but a few lines for context to prevent us from seeing the double line spacing all over again :-) Great idea, but one slight snag is the poster then doesn't see how many newlines they've managed to insert using their superb tool. A few lines to illustrate along with your standard reference might be enough https://wiki.python.org/moin/GoogleGroupsPython I am on Ubuntu 12.10. I am still working with the 2 decimal places. Sometime ago i had this issue and I forget how i solved it. maybe i used datetime? thanks! -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: Experiences/guidance on teaching Python as a first programming language
Rick Johnson rantingrickjohn...@gmail.com wrote: Dovetails are nothing more than sadistic nostalgia -- they give old men a chubby and young men a nightmare. There is nothing more satisfying than cutting a set of dovetails by hand and having them glide together like silk, the first time you test-fit them, with no daylight visible anywhere. This dove-tailer understands Rapid Application Development http://woodwork.ars-informatica.ca/tool.php?art=dovetail_video Frank Klausz's three-minute dovetails using a bow saw -- Stanley C. Kitching Human Being Phoenix, Arizona --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com -- https://mail.python.org/mailman/listinfo/python-list
Re: [newbie] struggling wth tkinter
This is what I get: Traceback (most recent call last): File ./feet2meters.py, line 2, in module from tkinter import * File /home/jean/tkinter.py, line 2, in module import Tkinter as tk ImportError: No module named Tkinter From your original post I only changed the she-bang line from python to python3 #!/usr/bin/env python3 and the import lines remained as you originally posted which are appropriate for python3 from tkinter import * from tkinter import ttk The traceback above shows an import statement that is different from the one you originally posted which would be ok in python2 but not python3 import Tkinter as tk -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: [newbie] struggling wth tkinter
The only thing I see when running it is a little popup with Click mouse here to quit which works as expected but always shows the following error-message. This seems to be left over from an earlier post where you were binding a mouse event to a tk label Did you create a new file ? However the main window which should let you enter the numbers is not shown. This is the quit error message: Traceback (most recent call last): File ./feet2meters.py, line 3, in module from tkinter import ttk ImportError: cannot import name ttk This is the code: If I copy/paste your code as posted into a new file named ftom.py and change the she-bang line as follows #!/usr/bin/env python3 Then from the command line python3 ftom.py Your code runs as expected using python 3.2.3 -- Stanley C. Kitching Human Being Phoenix, Arizona -- https://mail.python.org/mailman/listinfo/python-list
Re: python 3.3 repr
We don't say len({42: None}) to discover
that the dict requires 136 bytes,
why would you use len(heåvy)
to learn that it uses 23 bytes ?
#!/usr/bin/env python
# -*- coding: utf-8 -*-
illustrate the difference in length of python objects
and the size of their system storage
import sys
s = heåvy
d = { 42 : None }
print
print ' s : %s' % s
print 'len( s ) : %d' % len( s )
print ' sys.getsizeof( s ) : %s ' % sys.getsizeof( s )
print
print
print ' d : ' , d
print 'len( d ) : %d' % len( d )
print ' sys.getsizeof( d ) : %d ' % sys.getsizeof( d )
--
Stanley C. Kitching
Human Being
Phoenix, Arizona
--
https://mail.python.org/mailman/listinfo/python-list
Re: The meaning of doubt, was Re: Python Basic Doubt
Peter Otten wrote: doubt Oh bother, said Pooh, what's in a word ? http://en.wikipedia.org/wiki/Curry https://pypi.python.org/pypi/curry/ http://en.wikipedia.org/wiki/Currying -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: [tkinter] trouble running imported modules in main program
Terry Reedy wrote: Code comments : double and triple spacing code make it painful to read, Not for everyone :-) I prefer mostly double-spaced code in any language especially in a 10 line box. Agree, but the 10 line box would not be used for routine code editing and viewing and could be made larger to accomodate viewing code posted online -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: Can someone suggest better resources for learning sqlite3? I wanted to use the Python library but I don't know sql.
Aseem Bansal wrote: Can someone suggest me better resources for learning sql/sqlite3 ? http://docs.python.org/3/library/sqlite3.html http://wiki.python.org/moin/DbApiCheatSheet http://www.w3schools.com/sql/default.asp http://www.sqlcourse.com/index.html http://sqlite.org/docs.html http://zetcode.com/db/sqlite/ -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: Looking for a name for a deployment framework...
jonathan.slend...@gmail.com wrote: Any suggestions for a good name, for a framework that does automatic server deployments ? asdf : automatic server deployment framework -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ?
Steven D'Aprano wrote: On Fri, 12 Apr 2013 23:26:05 +, Cousin Stanley wrote: The firefox browser keeps different sqlite database files for various uses Yes, and I *really* wish they wouldn't. It's my number 1 cause of major problems with Firefox. Problems with software of any flavor, especially software that is used regularly and upon which we are somewhat dependent, are always a source of frustration My own personal use of firefox over the years has been limited as I have not used it for my primary browser and have not experienced any problems with its bookmarks I use opera as my primary browser and would very much like to convert the plain-vanilla bookmark.adr file that opera uses into an sqlite data base for diversity in bookmark searches that would be independent of reglular browser usage $ grep FOLDER ~/.opera/bookmarks.adr | wc -l 631 $ grep URL ~/.opera/bookmarks.adr | wc -l 14944 http://kb.mozillazine.org/Bookmarks_history_and_toolbar_buttons_not_working_-_Firefox Although there have been many reports entailing corruption of the places.sqlite file, it isn't apparent to me from the link above that sqlite itself is the culprit Could the complexity/bugginess of the firefox code possibly be the cause instead ? If Firefox works normally when you first open it after starting up the computer but multiple symptoms arise after you close and later reopen Firefox, it's likely that a Firefox process from a previous session did not close properly and the Places database ( places.sqlite file ) is locked. If you check the headers of any of my posts here you will find that I post with a python-based news client named XPN that also uses sqlite for persistent storage, one sqlite database for each different newsgroup I've used xpn daily for many years and have never experienced a corrupted sqlite database file firefox + sqlite buggy ? ... :-( python + sqlite ok, hooray :-) Using a database for such lightweight data as bookmarks is, in my opinion, gross overkill and adds to the complexity of Firefox. More complexity leads to more bugs, e.g.: https://bugzilla.mozilla.org/show_bug.cgi?id=465684#c11 https://bugzilla.mozilla.org/show_bug.cgi?id=431558 These pages show problems that are 4 and 5 years old from 2008 2009 and are marked as Status: RESOLVED FIXED at the top of the page Are you still having firefox bookmark problems today ? -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ?
someone wrote: As you can see, on my system I had to use: print row[0] , row[1] instead of: print row[ 'xtime' ] , row[ 'col4' ] I'm not sure exactly why The magic there is setting up the row_factory after the database connection dbc = DBM.connect( 'some.sql3' ) dbc.row_factory = DBM.Row I don't really know what's the difference between sqlite3 and mysql... MySQL is used through a client/server system where the db server is always running and client processes submit requests to it in the form of sql statements SQLite is used as a stand-alone single process with no external server involved Both speak sql but there are some differences mostly in data base connection strings and data type declarations Basic sql selection is select these fields from these files where these conditions are met And that part of sql doesn't vary much among different data base managers -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ?
someone wrote: So SQLite is very good for practicing Yes it is but it is also very good for much more than just practice Check the wikipedia info http://en.wikipedia.org/wiki/Sqlite It is arguably the most widely deployed database engine, as it is used today by several widespread browsers, operating systems, and embedded systems, among others The firefox browser keeps different sqlite database files for various uses If you use firefox check its default directory and you will see several files with .sqlite file type extensions Under debian debian linux ~/.mozilla/firefox/*.default Many programmers, including pythonistas, use sqlite for a convenient and persistent data store where data can be stashed now and used later in many different ways through the diversity of sql selections Thanks again You're welcome I just love this python language Me too :-) -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ?
someone wrote:
I want to put this table into an appropriate container
such that afterwards I want to:
1) Put the data into a mySql-table
You might consider using sqlite3 as a database manager
since it is batteries included with python
The stand-alone sqlite interpreter can first be used
to create an empty database named some.sql3
and create a table named xdata in that data base
sqlite3 some.sql3 '.read xdata_create.sql'
where the file xdata_create.sql contains
create table xdata
(
xdate integer ,
xtime integer ,
col1 real ,
col2 integer ,
col3 integer ,
col4 real ,
col5 integer ,
col6 integer
) ;
# ---
The csv data file can then be inserted into the xdata table
in the some.sql3 database via python
import sqlite3 as DBM
fs = open( 'some.csv' )
ls = [ ]
dbc = DBN.connect( 'some.sql3' )
cur = dbc.cursor()
sql = 'insert into xdata values( ? , ? , ? , ? , ? , ? , ? , ? )'
for row in fs :
dt, col1, col2, col3, col4,col5, col6 = row.strip().split(',' )
xdate , xtime = dt.split( 'T' )
xtuple = ( xdate, xtime, col1, col2, col3, col4, col5, col6 )
cur.execute( sql , xtuple )
fs.close()
dbc.commit()
dbc.close()
#
# python data selection example
# for column 4 between 8 and 9
import sqlite3 as DBM
fs = open( 'some.csv' )
ls = [ ]
dbc = DBM.connect( 'some.sql3' )
dbc.row_factory = DBM.Row
cur = dbc.cursor()
list_sql = [
'select xtime , col4' ,
'from xdata' ,
'where xtime = 8 and xtime = 9 ; ' ]
str_sql = '\n'.join( list_sql )
cur.execute( str_sql )
for row in cur :
print row[ 'xtime' ] , row[ 'col4' ]
fs.close()
dbc.close()
#
You can be creative with the data selections
and pass them off to be plotted as needed
If mysql is used instead of sqlite3
you should only have to monkey with
the data type declarations in xdata_create.sql
and the dbc.connect strings in the python code
--
Stanley C. Kitching
Human Being
Phoenix, Arizona
--
http://mail.python.org/mailman/listinfo/python-list
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ?
Cousin Stanley wrote: The stand-alone sqlite interpreter can first be used to create an empty database named some.sql3 and create a table named xdata in that data base sqlite3 some.sql3 '.read xdata_create.sql' This step can also be done in python without using the stand-alone sqlite interpreter # - import sqlite3 as DBM dbc = DBM.connect( 'some.sql3' ) cur = dbc.cursor() list_sql = [ 'create table if not exists xdata ' , '( ' , ' xdate integer , ' , ' xtime integer , ' , ' col1 real, ' , ' col2 integer , ' , ' col3 integer , ' , ' col4 real, ' , ' col5 integer , ' , ' col6 integer ' , ') ; ' ] str_sql = '\n'.join( list_sql ) cur.execute( str_sql ) dbc.commit() dbc.close() -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: python-noob - which container is appropriate for later exporting into mySql + matplotlib ?
someone wrote: I want to put this table into an appropriate container such that afterwards I want to: 1) Put the data into a mySql-table 2) Be able to easily plot column 1 vs. either of the other columns using matplotlib etc... Consider editing your data file into a csv file named someone.csv 20130315T071500,39000.,10,26,48000.,1,40 20130315T071501,39000.,10,26,48000.,2,42 20130315T071501,39000.,10,26,47520.,15,69 20130315T071501,39000.,10,26,47160.,1,70 20130315T071501,39000.,10,26,47000.,1,72 20130315T071501,39000.,10,26,47000.,2,81 20130315T071501,39000.,10,26,47000.,6,85 20130315T071501,39000.,10,26,46520.,10,95 20130315T071501,43000.,10,36,46520.,10,95 20130315T071501,43200.,4,43,46520.,10,104 20130315T071501,44040.,1,45,46520.,10,108 20130315T071501,44080.,3,48,46520.,10,109 20130315T071501,44080.,3,48,46520.,11,113 20130315T071501,44080.,3,48,46400.,2,131 20130315T071501,45080.,1,51,46400.,2,145 20130315T071501,45080.,1,51,46200.,1,147 20130315T071501,45080.,1,60,46120.,1,182 20130315T071501,45520.,1,65,46120.,1,225 20130315T071501,45520.,1,73,46120.,2,247 20130315T08,45760.,1,133,46120.,2,378 20130315T080241,45760.,2,199,46120.,2,453 20130315T080945,45760.,3,217,46120.,2,456 20130315T081103,45760.,3,217,46080.,1,457 20130315T081105,45760.,3,218,46080.,2,458 20130315T081106,45760.,4,222,46080.,2,458 20130315T081107,45800.,1,229,46080.,2,458 20130315T082754,45800.,8,266,46080.,2,514 # --- # # The csv data can be loaded using the csv module # # named tuples might be used # for convenience to access # individual columns #!/usr/bin/env python import csv from collections import namedtuple as NT file_source = open( 'someone.ssv' ) # --- individual column names --- nt = NT( 'csv_data' , 'date time col1 col2 col3 col4 col5 col6' ) list_tuples = [ ] for this_row in csv.reader( file_source ) : # unpack the current row zed , one , two , tre , fur , fiv , six = this_row # split the date and time d , t = zed.split( 'T' ) # convert individual columns in row to a named tuple this_tuple = nt( d , t , float( one ) , int( two ) , int( tre ) , float( fur ) , int( fiv ) , int( six ) ) # save the current named tuple into a list list_tuples.append( this_tuple ) # update_data_base( this_tuple ) # or # update_data_base( choose individual columns ) # individual elements of the named tuples # can be accessed by name # # this might be convenient for settup up # data for plots of diffeent columns print for row in list_tuples : print ' ' , row.date , row.time , row.col1 , row.col3 , row.col4 file_source.close() -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: can anyone help me in developing a simple webpage in jinja2
Satabdi Mukherjee wrote:
i am a rookie in python and i am trying
to develop a simple webpage using jinja2.
can anyone please help me how to do that
You might try using your jinja template
with named tuples
# ---
from jinja2 import Template
from collections import namedtuple as NT
nt = NT( 'Navigation' , 'href caption' )
n1 = nt( 'http://python.org' , 'python' )
n2 = nt( 'http://cython.org' , 'cython' )
n3 = nt( 'http://jython.org' , 'jython' )
n4 = nt( 'http://pypy.org/' , 'pypy' )
nav = ( n1 , n2 , n3 , n4 )
tmpl = Template( '''\
!DOCTYPE HTML PUBLIC -//W3C//DTD HTML 4.01//EN
html lang=en
head
titleMy Webpage/title
/head
body
ul id=navigation
{% for url , caption in navigation %}
lia href={{ url }}{{ caption }}/a/li
{% endfor %}
/ul
h1My Webpage/h1
{{ a_variable }}
/body
/html
''' )
print tmpl.render(
variable = 'Navigation' , navigation = nav )
--
Stanley C. Kitching
Human Being
Phoenix, Arizona
--
http://mail.python.org/mailman/listinfo/python-list
Re: Performance of int/long in Python 3
Chris Angelico wrote: Interesting, so your 3.x sum() is optimizing something somewhere. Strange. Are we both running the same Python ? I got those from apt-get I also installed python here under Debian Wheezy via apt-get and our versions look to be the same -sk- 2.7.3 (default, Jan 2 2013, 16:53:07) [GCC 4.7.2] 3.2.3 (default, Feb 20 2013, 17:02:41) [GCC 4.7.2] CPU : Intel(R) Celeron(R) D CPU 3.33GHz -ca- 2.7.3 (default, Jan 2 2013, 13:56:14) [GCC 4.7.2] 3.2.3 (default, Feb 20 2013, 14:44:27) [GCC 4.7.2] CPU : ??? Could differences in underlying CPU architecture lead to our differing python integer results ? -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: Performance of int/long in Python 3
Chris Angelico wrote: Once again, Py3 is slower on small integers than Py2. Chris Angelico Ubuntu Karmic. Pentium(R) Dual-Core CPU E6500 @ 2.93GHz. python inline range_sum forloop forloop_offset 2.6.4 2.7050 2.6492 6.5877 16.5168 3.1.1 4.4453 4.3731 12.4834 13.5001 You do seem to have a slight py3 improvement under ubuntu for the forloop_offset case So where's the difference with your system ? CPU This is really weird ! Yep ... I assume you can repeat the tests and get the same result every time ? Yes First lines of numbers below are from yesterday while second lines are from today Stanley C. Kitching Debian Wheezy Intel(R) Celeron(R) D CPU 3.33GH Single Core python inline range_sum forloop forloop_offset 2.7.3 3.1359 3.0725 9.0778 15.6475 2.7.3 3.0382 3.1452 9.8799 16.8579 3.2.3 2.8226 2.807413.47624 13.6430 3.2.3 2.8331 2.822813.54151 13.8716 -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: Performance of int/long in Python 3
Chris Angelico wrote: The Python 3 merge of int and long has effectively penalized small-number arithmetic by removing an optimization. The cost is clear. The cost isn't quite as clear under Debian Wheezy here Stanley C. Kitching Debian Wheezy python inline range_sum forloop forloop_offset 2.7.3 3.1359 3.0725 9.0778 15.6475 3.2.3 2.8226 2.807413.47624 13.6430 # - Chris Angelico Debian Wheezy python inline range_sum forloop forloop_offset 2.7.3 1.9276 1.9341 5.1463 5.1346 3.2.3 2.8841 2.6586 7.6602 8.1182 -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: Import Json web data source to xls or csv
io wrote: How do i manage to read the data source from http://bitcoincharts.com/t/markets.json I just need currency, symbol, bid, ask, volume Following is a simple way load the json data and write the desired fields to a .csv file import json import urllib url= http://bitcoincharts.com/t/markets.json; response = urllib.urlopen( url ) ; data = json.loads( response.read() ) list_dicts = [ dict( this ) for this in data ] f = open( 'markets.csv' , 'w' ) for this_dict in list_dicts : currency = str( this_dict[ 'currency'] ) symbol= str( this_dict[ 'symbol' ] ) bid = str( this_dict[ 'bid' ] ) ask = str( this_dict[ 'ask' ] ) volume= str( this_dict[ 'volume' ] ) this_list = [ currency , symbol , bid , ask , volume ] this_str = ','.join( this_list ) f.write( this_str + '\n' ) f.close() -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: Fast forward-backward (write-read)
Virgil Stokes wrote: Not sure about tac --- could you provide more details on this and/or a simple example of how it could be used for fast reversed reading of a data file ? tac is available as a command under linux $ whatis tac tac (1) - concatenate and print files in reverse $ whereis tac tac: /usr/bin/tac /usr/bin/X11/tac /usr/share/man/man1/tac.1.gz $ man tac SYNOPSIS tac [OPTION]... [FILE]... DESCRIPTION Write each FILE to standard output, last line first. With no FILE, or when FILE is -, read standard input. I only know that the tac command exists but have never used it myself -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: Eclipse and the Python plugin
lipska the kat wrote: I can now create, debug and test a simple IRC server written in Java and an IRC Bot that I am attempting to build in Python For a bit of inspiration python-irc-bot-wise you might look at supybot It's currently available in debian wheezy so probably also available in ubuntu # apt-cache show supybot A few years back I ran it 24/7 for several months on a very low spec debian box and was impressed with its performance, configurability, and plugin usage However, I haven't looked at or used recent versions -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: [newbie] problem with data (different behaviour between batch and interactive use)
Jean Dupont wrote: I have some data which is presented in the following format to me : +3.874693E-01,+9.999889E-03,+9.91E+37,+1.876595E+04,+3.994000E+04 I'm only interested in the first two fields i.e. +3.874693E-01,+9.999889E-03 The following program will read lines of comma-separated data from a text file and add each line as a row in a list of lists The first two items in each row could be accessed by their indexes # -- #!/usr/bin/env python fsource = open( 'edata.txt' ) ltarget = [ ] for this_line in fsource : this_list = this_line.strip().split( ',' ) that_list = [ float( x ) for x in this_list ] ltarget.append( that_list ) for this_row in ltarget : print ' %e' % this_row[ 0 ] print ' %e' % this_row[ 1 ] print fsource.close() # - # # edata.txt +3.874693E01,+9.999889E03,+9.91E+37,+1.876595E+04,+3.994000E+04 1e01,2e02,3e03,4e04,5e05 5e-05,4e-04,3e-03,2e-02,1e-01 -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: python for android anyone?
rusi wrote: Any specific tips will of course be welcome but also the general idea -- is android really python friendly (yet)? You might take a look at Kivy http://kivy.org/ It is built with Cython ( C extensions for Python ) and, in order to create apps, Python knowledge is required. The platforms currently supported are Linux, Windows, Mac OS X and Android. The gallery is impressive http://kivy.org/#gallery I have very limited experience with Kivy using Debian Linux as the development platform and installing a couple of simple demo apps on an ArchOS tablet running Android ICS Back at the first of this month I had problems trying to build android packages using the newest versions of the android sdk / ndk packages on Debian Advice at the time was to drop back a version and try again or wait for kivy versioning to catch up a bit -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: Questions about compiled Python (beginner)
This short article provides some basic information about .pyc and .pyo files http://www.network-theory.co.uk/docs/pytut/CompiledPythonfiles.html -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: What I do and do not know about installing Python on Win 7 with regard to IDLE.
W. eWatson wrote: My criterion for success is that it puts IDLE as a choice for editor on the menu produced with a right-click on a py file. So far no response on this has solved the problem. As an alternative you might consider adding a short-cut to IDLE to the Send To directory if that option is still available under windows 7 That would seem almost as handy only moving the mouse one more time to roll out the Send To target menu before the final click to launch -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: learning another programing language
Benjamin Gregg wrote: I want to know is there any good tutorials or tips for learning C++/java after using python? You might find the following site to be useful java information http://mindprod.com/jgloss/jgloss.html -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: python xauth
kracekumar ramaraju wrote: I am looking to use xauth in python ? It is for my command line process, I would like to have few examples and resources. A simple example import subprocess as SP proc = [ 'xauth' , 'list' , ':0' ] pipe = SP.Popen( proc , stdout = SP.PIPE ) data = pipe.stdout.readline() print '\n' , data em1dsq/unix:0 MIT-MAGIC-COOKIE-1 10a533afab15a57c8704a16d1dc5bb12 -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: web browsing short cut
Chris Angelico wrote: frameset rows=50%,50% frameset cols=50%,50% frame src=http://blah/blah; frame src=http://another/blah; /frameset frameset cols=50%,50% frame src=http://third/blah; frame src=http://final/blah; /frameset /frameset That should divide your screen four ways ( if I haven't botched my HTML - ages since I've used frames ). html !botched :-) An example of your frameset code http://csphx.net/fourpy.htm -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: Automatic placement of a text box? ie empty legend [matplotlib]
Christopher Barrington-Leigh wrote: I'd like to have the Sample A box place itself in the optimal empty space, so as not to overlay any graphing elements (if possible): A simple alternative might be to place the label just outside of the plot region either at the top or the bottom of the plot instead of finding an open area in which to place the label def extremes( x1 , y1 , x2 , y2 ) : min_x1 = min( x1 ) min_y1 = min( y1 ) max_x1 = max( x1 ) max_y1 = max( y1 ) min_x2 = min( x2 ) min_y2 = min( y2 ) max_x2 = max( x2 ) max_y2 = max( y2 ) min_x = min( min_x1 , min_x2 ) min_y = min( min_y1 , min_y2 ) max_x = max( max_x1 , max_x2 ) max_y = max( max_y1 , max_y2 ) aminx = min_x aminy = min_y - 1.4 amaxx = max_x amaxy = max_y + 1.4 return aminx , aminy , amaxx , amaxy # bump up the plot size a bit fig = plt.figure( 1 , figsize = ( 6 , 6 ) ) aminx , aminy , amaxx , amaxy = extremes( x1 , y1 , x2 , y2 ) # label at top center ax.text( 0 , amaxy , Sample A , ha = center , va = center , size = 16 , bbox = bbox_props ) -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: NEED HELP-process words in a text file
Steven D'Aprano wrote: If ONE word in uppercase is read in a SLIGHTLY louder voice, then naturally it doesn't take much imagination TO READ EVEN QUITE SHORT PASSAGES OF UNINTERRUPTED UPPERCASE WORDS AS SHOUTING LOUDLY -- And it doesn't take much of a reality check through my own personal faculties to realize that my newsreader is not currently piped into a text-to-speech process and is not emitting any sound :-) Even then, there most likely wouldn't be any extra emphasis on words written in all capital letters unless the tts process was specifically altered to do so regardless of the poor design of programming languages in the 60s and 70s. I don't think programming languages of that era were poorly designed and especially not just because they happened to be coded in text with all caps -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: NEED HELP-process words in a text file
Chris Rebert wrote: Netiquette comment: Please avoid SHOUTING The brilliant beam of light that first thought capitilized words amounted to shouting never programmed cobol, fortran, or pl/1 in the 1960s or 1970s :-) How or why this behavior was cultivated and continues to spread is mind boggling to me :-) -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: NEED HELP-process words in a text file
John Gordon wrote: In iu2ns9$kkq$1...@dont-email.me Cousin Stanley cousinstan...@gmail.com writes: How or why this behavior was cultivated and continues to spread is mind boggling The behavior of writing in all caps, or the behavior of equating such writing with shouting ? The latter equating writing in all caps with shouting It wobbles the mind. -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: pyGTK identify a button
Tracubik wrote:
Hi all,
i'm trying to write a simple windows with two button in GTK,
i need a way to identify wich button is pressed.
#!/usr/bin/env python
import gtk
def console_display( button , args ) :
a0 , a1 , a2 = args
print '%s %s %s ' % ( a0 , a1 , a2 )
window = gtk.Window()
window.set_title( gtk.buttons.01 )
window.set_size_request( 300 , -1 )
window.set_position( gtk.WIN_POS_CENTER )
window.connect( destroy , gtk.main_quit )
# Create VBox and add in Window
vbox = gtk.VBox()
window.add( vbox )
# Create buttons
dict_buttons = {
12 : [ 'OneTwo' , 'Buckle ' , 'My Shoe' ] ,
34 : [ 'TreFor' , 'Shut ' , 'The Door' ] ,
56 : [ 'FivSix' , 'Pick ' , 'Up Sticks' ] ,
78 : [ 'SvnAte' , 'Lay' , 'Them Straight' ] ,
910 : [ 'NinTen' , 'Big' , 'Fat Hen' ] }
list_keys = dict_buttons.keys()
list_keys.sort()
for this_button in list_keys :
this_name = dict_buttons[ this_button ][ 0 ]
b = gtk.Button( this_name )
b.set_name( this_name )
b.connect( clicked , console_display , dict_buttons[ this_button ] )
vbox.pack_start( b )
window.show_all()
gtk.main()
--
Stanley C. Kitching
Human Being
Phoenix, Arizona
--
http://mail.python.org/mailman/listinfo/python-list
Only 7 Years
On May 8, 2004 I posted a note[1] here in comp.lang.python with a subject line of Lost : Plot_Demo looking for a small 2d plot program that I had seen, misplaced, and which I thought came along as a demo with a PYTHON installation This morning after rooting about in an old JYTHON demo dir I found the program in Demo/awt/Graph.py along with a comment that I had edited the file about 7 months before posting here looking for it ! It's a very nice demo with a single text box to enter simple functions to be parsed and plotted At least it's good to know that I'm only forgetful and not totally daft :-) [1] http://groups.google.com/group/comp.lang.python /browse_thread/thread/54d4b716bfbdcb9c/f3e48b33fcf4e1d3 -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: First time using an API...
Matty Sarro wrote: I am in charge of deploying a platform to allow people across my company to access a variety of crunched metrics using splunk. For the convenience of others that may not be familar with splunk http://en.wikipedia.org/wiki/Splunk http://www.splunk.com/ -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: Suggested editor for wxPython on Ubuntu
usenet.digi...@spamgourmet.com wrote: Ok, I've decided that Boa Constructor is too buggy to be useful under Ubuntu, so what would the team recommend for developing Python projects with wxPython? Preferably with some GUI design capability? perhaps python-wxglade GUI designer written in Python with wxPython wxGlade is a GUI designer written in Python with the popular GUI toolkit wxPython, that helps you create wxWidgets/wxPython user interfaces. At the moment it can generate Python, C++ and XRC (wxWidgets' XML resources) code. -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: Problem with giant font sizes in tkinter
Steven D'Aprano wrote: I have a tkinter application under Python 2.6 which is shows text in a giant font, about twenty(?) times larger than expected. The fonts are set using: titlefont = '-Adobe-Helvetica-Bold-R-Normal-*-180-*' buttonfont = '-Adobe-Helvetica-Bold-R-Normal-*-140-*' labelfont = '-Adobe-Helvetica-Bold-R-Normal-*-140-*' Although I've been a linux user for several years, that type of font spec hurts my head :-) Will the more simplistic type of tuple spec not work in your tkinter application ? canv.create_text( 81 , 27 , text = ' NTSC Standard ' , fill = 'white' , font = ( 'Helvetica' , 12 , 'bold' ) ) -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: IDLE: A cornicopia of mediocrity and obfuscation.
rantingrick wrote: Terry (or anyone) can you give some link to info on hg so i can study up on this topic ? http://mercurial.selenic.com/ -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: SQLite is quite SQL compliant
Ravi wrote: The documentation of the sqlite module at http://docs.python.org/library/sqlite3.html says: ... allows accessing the database using a nonstandard variant of the SQL... But if you see SQLite website they clearly say at http://sqlite.org/omitted.html that only very few of the SQL is not implemented. I think docs should clarify on that. Many users might be scared of using SQLite just because of this. SQLite is very widely used in many different contexts You might check the related wikipedia article and scroll down to the Adoption section for a brief list of some well-known users http://en.wikipedia.org/wiki/Sqlite -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: problem in Gasp !
n.a.s wrote: I want to ask about graphics using Gasp .Attached is exercise 10 (houses at night) http://openbookproject.net/thinkCSpy/ch04.html#exercises if i call the draw_house function once it will work properly ,but more than one call,windows and doors disappear from some houses . Any one can advice? A working version that runs using Python2.6 under Debian 6 Squeeze can be found at http://csphx.net/python/house.tar.bz A screenshot of the result is included in that archive http://csphx.net/image/houses_10.png -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: palindrome iteration
To deal with real palindromes such as, Madam, I'm Adam, you should probably strip all spaces and punctuation: # untested pat = re.compile(r'[a-z]') def is_palindrome(s): letters = pat.findall(s.lower()) return letters == reversed(letters) Using python 2.5 the above solution always returned False for me until the reversed( letters ) iterator was explicitly coerced into a list return letters == list( reversed( letters ) ) -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: python styles: why Use spaces around arithmetic operators?
Parentheses are punctuation. Why not leave spaces around the commas as well, to be consistent? myTuple = ( 1 , 2 , 3 , 4 , 5 ) Personally, I do use this particular style with commas as I find it more readable to my old and tired eyes Mandate m o r e whitespace :-) -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: Getting pyparsing to backtrack
I'm working on street address parsing again, and I'm trying to deal with some of the harder cases. For yet another test case my actual address includes ... East South Mountain Avenue Sometimes written as ... E. South Mtn Ave -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: Another nntplib Question
I've run into another snag with nntplib Anthony For inspiration you might take a look at a nice news client written in python XPN (X Python Newsreader) is a graphical newsreader written in Python with the GTK+ toolkit. http://xpn.altervista.org/index-en.html -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: PIL show() not working for 2nd pic
I am using PIL for image processing in ubuntu 9.04. When i give two im.show() commands for two different images, the second image is not displayed (eye of gnome is the display program). It says no such file or directory. Any ideas? Suresh I also had problems with show() when using eye of gnome as the image viewer with your code but no problems using the display viewer from the imagemagick package im.show( command = 'eog' )#problems im.show( command = 'display' )# no problems # -- #!/usr/bin/python ''' NewsGroup comp.lang.python Subject .. PIL show() not working for 2nd pic Date . 2010-01-07 Post_By .. suresh.amritapuri Edit_By .. Stanley C. Kitching ''' import math import Image list_source = [ 'image/beach.tif' , 'image/colors.tif' ] list_target = [ ] def neg( x ) : return 255 - 1 - x def logtr( x ) : y = math.log( 1 + x , 10 ) print y return y * 100 for this_image in list_source : im_source = Image.open( this_image ) im_neg = im_source.point( neg ) im_logtr = im_source.point( logtr ) list_target.append( im_source ) list_target.append( im_neg ) list_target.append( im_logtr ) for this_image in list_target : this_image.show( command = 'display' ) # -- -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: Dynamic text color
John Posner wrote
I've posted a complete solution
http://cl1p.net/jjp_dynamic_text_color/.
John
Thanks for posting your solution to Dave McCormick's query
about colorizing text
I was not familiar with the re.finditer method
for searching strings or with using tags in
Tkinter Text widgets to change text attributes
Instead of binding the Text widget to KeyRelease events
to call the colorizer on each key-stroke, I used a button
callback
http://cl1p.net/cs_static_text_color
This provides a static one-shot colorization after all
of the text is entered and should save a few cpu cycles
although it's not as nifty as the dynamic process
I used a dictionary instead of a list for position data
and also added a { term : color } dictionary so that
words other than color names can be hi-lighted
--
Stanley C. Kitching
Human Being
Phoenix, Arizona
--
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Re: How do I correctly download Wikipedia pages?
I'm trying to scrape a Wikipedia page from Python. On occasion I use a program under Debian Linux called wikipedia2text that is very handy for downloading wikipedia pages as plain text files Description: displays Wikipedia articles on the command line This script fetches Wikipedia articles (currently supports around 30 Wikipedia languages) and displays them as plain text in a pager or just sends the text to standard out. Alternatively it opens the Wikipedia article in a (possibly GUI) web browser or just shows the URL of the appropriate Wikipedia article. Example directed through the lynx browser wp2t -b lynx gorilla gorilla.txt -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: sys.stdout is not flushed
You misunderstand what flush means. It is not about
clearing the screen, or the line.
Try printing
stdout.write('\r--%d')
Diez
But there is still a problem. When you use control character '\r',
you actually move to the head of the current buffer line and
overwrite it.
So if I use this way:
for i in range(100, 0,-1)
The tail of the buffer is not overwrote.
The following version works ok for me
using python2.5 under debian linux
import sys
import time
print
for n in range( 11 ) :
sys.stdout.write( '\rWorking %d ' % n )
sys.stdout.flush()
time.sleep( 1 )
else :
print \n
print That's all, folks !
print Adios ...
--
Stanley C. Kitching
Human Being
Phoenix, Arizona
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