Re: [Visualpython-users] Break-In While Looping

[Chris C. <scc...@gm...>]

You should look into the threading module:

http://docs.python.org/library/threading.html

On Sun, Sep 27, 2009 at 9:05 PM, Kadir Haldenbilen
<kha...@ya...> wrote:
> Hello All,
>
> I am trying to write a little routine, which will enable intreacting with
> the program while it is looping.
> It is basically intended for debugging, butit may also be useful for
> changing some attributes (and hence the logic) in flight.
>
> I am using the keyboard events to break-into the loop. I am using the "@"
> character as a special character,
> then, once detected I input my command from the shell (with
> preceeding/following quote signs).
>
> It works OK for the first time.
>
> But, after the first one, "scene.kb.keys" does not sense the input key.
>
> Most probably, with the input() command I am breaking some stack, etc., so
> that visual can not detect the keyboard input.
>
> You can find the sample code below.
>
> Any ideas will be appreciated.
>
> Thanks,
>
> Kadir
>
> ======================================
>
> from visual import *
>
> bb = box()
>
> while 1:
>
>         if scene.kb.keys: # event waiting to be processed?
>                 s = scene.kb.getkey() # get keyboard info
>                 print "s ", s  # this is the key pressed
>                 if s == "@":   # see if it is the break character "@"
>                         df = input("Enter Command: ")  # If True, then wait
> for command input
>                         print df   # This is the command entered
>                         try:       # it may be an invalid command, be
> prepared
>                                 print eval(df)  # execute the command and
> print the result
>                         except:
>                                 pass     # if invalid command do nothing
>
>                         s = ""     # reset the input key
>                         print scene.kb.keys   # check if there are any other
> keyboard events
>
>         bb.rotate(axis=(0,1,0), angle=0.01) # set something going on in the
> loop
>         rate(25)
>
>
>
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