[Tkinter-discuss] Stopping a for loop with a sleep() funciton in it

[Alexnb]

yes I know it runs in milliseconds. So what do you suggest? 1 millisecond is
about what I want. it was .1 seconds for the sleep() time. 
I didn't write this code I found it online so I don't really understand it,
but I know that is where the problem is, the for loop.

Guilherme Polo wrote:
> 
> On Thu, Jul 10, 2008 at 8:45 PM, Guilherme Polo <ggpolo at gmail.com> wrote:
>> On Thu, Jul 10, 2008 at 8:24 PM, Alexnb <alexnbryan at gmail.com> wrote:
>>>
>>>
>>>
>>> Guilherme Polo wrote:
>>>>
>>>> On Thu, Jul 10, 2008 at 7:31 PM, Alexnb <alexnbryan at gmail.com> wrote:
>>>>>
>>>>>
>>>>>
>>>>> Guilherme Polo wrote:
>>>>>>
>>>>>> On Thu, Jul 10, 2008 at 5:57 PM, Alexnb <alexnbryan at gmail.com> wrote:
>>>>>>>
>>>>>>> Okay, so I have a for loop with a sleep command. I want the loop to
>>>>>>> continue
>>>>>>> until it is told to stop. I want to tell it to stop when a list goes
>>>>>>> from
>>>>>>> empty to having something. The problem is that when that loop
>>>>>>> starts,
>>>>>>> the
>>>>>>> program pretty much stops with it.
>>>>>>
>>>>>> You need to remove the use of sleep and use "after" instead. You keep
>>>>>> scheduling your task till the condition is not met anymore, then you
>>>>>> stop scheduling it with "after".
>>>>>>
>>>>>>> To make things harder, I really want that
>>>>>>> to be it's own class, so I have to pass it the list that triggers
>>>>>>> the
>>>>>>> stopping, but I can only pass it the list once. So I don't think it
>>>>>>> is
>>>>>>> possible.
>>>>>>
>>>>>> It is, just pass some other object along which can call the method
>>>>>> "after".
>>>>>>
>>>>>>> But if this made sense to anyone, and you have a suggestion I
>>>>>>> would love it. Heres the full code: (but at the bottom, the Open
>>>>>>> function
>>>>>>> is
>>>>>>> really the only thing that matters)
>>>>>>>
>>>>>>
>>>>>> If you want help based on code, you have to post a short-enough code
>>>>>> that demonstrates the problem.
>>>>>>
>>>>>>> from Tkinter import *
>>>>>>> import time
>>>>>>>
>>>>>>> class BusyBar(Frame):
>>>>>>> ...
>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> -- Guilherme H. Polo Goncalves
>>>>>> _______________________________________________
>>>>>> Tkinter-discuss mailing list
>>>>>> Tkinter-discuss at python.org
>>>>>> http://mail.python.org/mailman/listinfo/tkinter-discuss
>>>>>>
>>>>>>
>>>>>
>>>>> Okay, so I modified the bottom code to this:
>>>>>
>>>>> def Open(root):
>>>>>
>>>>>    bb = BusyBar(root, text='Grabbing Definitions')
>>>>>    bb.pack(side=LEFT, expand=NO)
>>>>>
>>>>>
>>>>>    def sleeper():
>>>>>        root.update
>>>>
>>>> What if you change this to root.update() ?
>>>>
>>>>>        root.after(1, sleeper)
>>>>
>>>> after works with milliseconds, not seconds, be aware.
>>>>
>>>>>    bb.on()
>>>>>    root.update_idletasks()
>>>>>
>>>>>    sleeper()
>>>>>
>>>>>    #for i in range(0, 100):
>>>>>        #time.sleep(0.1)
>>>>>        #root.update()
>>>>>    bb.of()
>>>>>
>>>>> but it doesn't repeat. What am I missing?
>>>>>
>>>>
>>>>
>>>> --
>>>> -- Guilherme H. Polo Goncalves
>>>> _______________________________________________
>>>> Tkinter-discuss mailing list
>>>> Tkinter-discuss at python.org
>>>> http://mail.python.org/mailman/listinfo/tkinter-discuss
>>>>
>>>>
>>>
>>> Well, what was happening before is that the bar would just be at a
>>> standstill. After making it update() it moved a little, but was just a
>>> standstill at a different place, if that makes sense. Any more ideas?
>>> heres
>>> the code:
>>>
>>> def Open(root):
>>>
>>>    bb = BusyBar(root, text='Grabbing Definitions')
>>>    bb.pack(side=LEFT, expand=NO)
>>>
>>>    bb.on()
>>>    root.update_idletasks()
>>>
>>>    def sleeper():
>>>        root.update()
>>>        root.after(1, sleeper)
>>
>> Did you ignore my last email where I said after takes milliseconds,
>> not seconds ? And this will forever, not what you want apparently.
>>
> 
> I forgot a word there, "... And this will run forever ...", sorry
> 
>>>
>>>    sleeper()
>>>
>>>    #for i in range(0, 100):
>>>        #time.sleep(0.1)
>>>        #root.update()
>>>    bb.of()
>>
>> The code you have pasted in the last two emails don't show the problem
>> you are having. I guess someone else will have to look at your entire
>> code to give more help.
>>
> 
> 
> -- 
> -- Guilherme H. Polo Goncalves
> _______________________________________________
> Tkinter-discuss mailing list
> Tkinter-discuss at python.org
> http://mail.python.org/mailman/listinfo/tkinter-discuss
> 
> 

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