Question

I run this code http://dpaste.com/795269/ and it generates a graphic. After that I run the code again and it generates the following error:

"The python shell window is already executing a command; please wait until it is finished."

How can I run the code again without the error?

Answer 1

when you downloaded pylab you should saved your files inside this folder and you can execute

Answer 2

Can you be a little more specific please?

Answer 3

inside the folder you downloaded you should keep your archivos.py and you will not have problems

Answer 4

I copied my MIT 6.00 folder into c:\python25 folder and it still generates the same error.

Answer 5

pylab is an extension of matplotlib - i know in matplot lib that it doesn't like it at all if you do not close the plot b4 moving on to executing more code - there are some caveats in the matplotlib documentation about useing the plot.close() method after opening a plot - can't remember the specifics but after a while i started putting a plot.close() statement right after the open() statement ..

Answer 6

There is no open() statement in the code. If I put pylab.close() after pylab.show() it doesn't fix it.

Answer 7

are you 'closing' the figures?

Answer 8

http://matplotlib.sourceforge.net/api/pyplot_api.html#matplotlib.pyplot.show
are you running it from a module or at a shell/idle prompt?

Answer 9

http://matplotlib.sourceforge.net/faq/howto_faq.html#use-show

Answer 10

I'm using the code in the first post in idle. It's from lecture 13. The first time I run it, everything is ok. Then I close the figure and run it again and it generates the error. If i close python and open it again it runs well.

Answer 11

this http://dpaste.com/795394/ worked for me - i got a figure for each show() with no complaining

Answer 12

That is 2 figures in the same script. Try to run the code that I posted twice. Just close the graphic after the first run and see what happens.

Answer 13

so if put those statements in a file/script/module and ran them (F5) and it produced a figure with two lines. I closed the figure and at the shell prompt ran pylab.show() and got the figure again ...
when you say 'run it twice' what does that mean exactly? F5 afain for the script/module window?
do you get a traceback? if so can you post it

Answer 14

1) I put this code in a script
2) I run it (F5)
3) I close the graphic that it generated
4) I run it again (F5)

I get no graphic and this error: "The python shell window is already executing a command; please wait until it is finished."

Answer 15

i 'ran' it several times like you described without fault. when you close the figures, do you get a prompt in the IDLE shell? can you run anything in the shell?

Answer 16

No.