Thread: [Matplotlib-users] How do I debug under PythonWin or IDLE?

I am sure this is a well know issue, so please feel free to just give a 
link if the answer and solution are long.  I have a newly installed 
matplotlib installations running on Windows XP using Python 2.5.4.  When 
I execute a simple 4 line example (copied directly from the PyPlot 
tutorial) in either PythonWin or IDLE, , it works fine and I terminate 
by right clicking on the generated figure and doing a Close.  However, 
when I rerun the code from the IDE (makes no difference if I use 
PythonWin or IDLE) the figure hangs and eventually I get an abnormal 
exit and crash out of the IDE (in PythonWin there is a dialogue box that 
says “Runtime Error” in pythonwin.exe.  This makes debugging in an IDE 
very clumsy, because I need to exit and restart it every time I run 
python code.

The test code is simply:

import matplotlib.pyplot as plt
plt.plot([1,2,3])
plt.ylabel('Some Numbers')
plt.show()


Thanks in advance,

David Lees

El jue, 08-01-2009 a las 12:09 -0600, de...@ve... escribió:
> I am sure this is a well know issue, so please feel free to just give a 
> link if the answer and solution are long.  I have a newly installed 
> matplotlib installations running on Windows XP using Python 2.5.4.  When 
> I execute a simple 4 line example (copied directly from the PyPlot 
> tutorial) in either PythonWin or IDLE, , it works fine and I terminate 
> by right clicking on the generated figure and doing a Close.  However, 
> when I rerun the code from the IDE (makes no difference if I use 
> PythonWin or IDLE) the figure hangs and eventually I get an abnormal 
> exit and crash out of the IDE (in PythonWin there is a dialogue box that 
> says “Runtime Error” in pythonwin.exe.  This makes debugging in an IDE 
> very clumsy, because I need to exit and restart it every time I run 
> python code.
> 
> The test code is simply:
> 
> import matplotlib.pyplot as plt
> plt.plot([1,2,3])
> plt.ylabel('Some Numbers')
> plt.show()
> 
> 
> Thanks in advance,
> 
> David Lees

Interactive mode works for me in an IDLE shell:

import matplotlib.pyplot as plt
plt.ion()
plt.plot([1,2,3])
plt.ylabel('Some Numbers')
plt.show()  # You don't have to call show() in interactive mode though

Goyo

El dom, 11-01-2009 a las 16:48 +0100, Goyo escribió:
> El jue, 08-01-2009 a las 12:09 -0600, de...@ve... escribió:
> > I am sure this is a well know issue, so please feel free to just give a 
> > link if the answer and solution are long.  I have a newly installed 
> > matplotlib installations running on Windows XP using Python 2.5.4.  When 
> > I execute a simple 4 line example (copied directly from the PyPlot 
> > tutorial) in either PythonWin or IDLE, , it works fine and I terminate 
> > by right clicking on the generated figure and doing a Close.  However, 
> > when I rerun the code from the IDE (makes no difference if I use 
> > PythonWin or IDLE) the figure hangs and eventually I get an abnormal 
> > exit and crash out of the IDE (in PythonWin there is a dialogue box that 
> > says “Runtime Error” in pythonwin.exe.  This makes debugging in an IDE 
> > very clumsy, because I need to exit and restart it every time I run 
> > python code.
> > 
> > The test code is simply:
> > 
> > import matplotlib.pyplot as plt
> > plt.plot([1,2,3])
> > plt.ylabel('Some Numbers')
> > plt.show()
> > 
> > 
> > Thanks in advance,
> > 
> > David Lees
> 
> Interactive mode works for me in an IDLE shell:
> 
> import matplotlib.pyplot as plt
> plt.ion()
> plt.plot([1,2,3])
> plt.ylabel('Some Numbers')
> plt.show()  # You don't have to call show() in interactive mode though
> 
> Goyo

I'm using the TKAgg backend, I guess there will be problems with other
interactive backends.

Goyo