RE: Timeout test hangs IDLE

2007-12-06 Thread Andreas Tawn 
 I once made a small app that used threads on IDLE.
 
 There was a strange error when using 'print'  threads. When 
 what I printed filled the entire screen, instead of moving 
 all the text up, IDLE just hanged. Try running your code from 
 the shell instead, to see if the problem is in IDLE. 
 
 HTH,
 Sergio

It looks like there's two issues here, an IDLE problem and a me
problem ;o)

I changed the countTest function to time.sleep(10) rather than a big
loop. When I run the script from the command line, the timeout triggers
properly after 5 seconds but the countTest function (running in a
seperate thread now) continues for the whole 10 seconds. This is the
me problem. I though that the timeout function would kill the
countTest thread, but it seems like it doesn't do that. Rather, the
timout just returns after 5 seconds with the message that the countTest
thread is still alive. I guess I need to set event flags so the
countTest function can end itself rather than trying to kill it from the
main thread?

When I run it from IDLE, everything runs correctly, but after the
countTest thread ends after 10 seconds, IDLE hangs as before. IDLE bug,
maybe?

Thanks for the help everyone.

The code looks like this now.

def countTest():# Succeeds from the command line, hangs in IDLE
import time
time.sleep(10)
return True

def timeout(func, args=(), kwargs={}, timeout_duration=1, default=None):
import threading
class InterruptableThread(threading.Thread):
def __init__(self):
threading.Thread.__init__(self)
self.result = None

def run(self):
try:
self.result = func(*args, **kwargs)
except:
self.result = default

it = InterruptableThread()
it.start()
it.join(timeout_duration)
if it.isAlive():
return default
else:
return it.result

def runTest():
timeout(countTest, timeout_duration=5)
print finished

if __name__ == __main__:
runTest()
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Re: Timeout test hangs IDLE

2007-12-06 Thread Gabriel Genellina 
En Thu, 06 Dec 2007 08:03:49 -0300, Andreas Tawn  
[EMAIL PROTECTED] escribió:

 There was a strange error when using 'print'  threads. When
 what I printed filled the entire screen, instead of moving
 all the text up, IDLE just hanged. Try running your code from
 the shell instead, to see if the problem is in IDLE.

 It looks like there's two issues here, an IDLE problem and a me
 problem ;o)

 I changed the countTest function to time.sleep(10) rather than a big
 loop. When I run the script from the command line, the timeout triggers
 properly after 5 seconds but the countTest function (running in a
 seperate thread now) continues for the whole 10 seconds. This is the
 me problem. I though that the timeout function would kill the
 countTest thread, but it seems like it doesn't do that. Rather, the
 timout just returns after 5 seconds with the message that the countTest
 thread is still alive. I guess I need to set event flags so the
 countTest function can end itself rather than trying to kill it from the
 main thread?

It's not your problem, the cookbook recipe your code is based on should  
make it clear: it does *not* kill the thread, it just returns to the  
caller earlier (at most when the timeout elapses). The thread continues to  
run (and consuming resources, of course).
If you actually want to stop a background task, the safest way would be  
for the thread to test some condition periodically and gracefully stop  
when requested. If that's not possible, and you have to forcibly kill a  
running thread, there is a different recipe at  
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/496960 (follow the  
link at the end for an updated version).

 When I run it from IDLE, everything runs correctly, but after the
 countTest thread ends after 10 seconds, IDLE hangs as before. IDLE bug,
 maybe?

Not exactly; doing background tasks with a GUI is tricky and requires some  
kind of cooperation, else the interfase usually becomes unresponsive.
How to run background tasks depends on the GUI toolkit used. IDLE uses  
Tkinter, do you use that toolkit for your final program?

-- 
Gabriel Genellina

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RE: Timeout test hangs IDLE

2007-12-05 Thread Andreas Tawn 
 On Dec 5, 6:00 am, Andreas Tawn [EMAIL PROTECTED] wrote:
  I'm trying to integrate the timeout function from 
 herehttp://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/47
 3878into a
  long running automation script and the following code 
 causes IDLE after
  20 or 30 iterations in countTest.
 
  This is in 2.5, XP and there's no traceback.
 
  Could someone point me at the user error?
 
  Thanks in advance.
 
  def countTest():
  for i in xrange(1000):
  print i
  return True
 
  def timeout(func, args=(), kwargs={}, timeout_duration=1, 
 default=None):
  import threading
  class InterruptableThread(threading.Thread):
  def __init__(self):
  threading.Thread.__init__(self)
  self.result = None
 
  def run(self):
  try:
  self.result = func(*args, **kwargs)
  except:
  self.result = default
 
  it = InterruptableThread()
  it.start()
  it.join(timeout_duration)
  if it.isAlive():
  return default
  else:
  return it.result
 
  def runTest():
  timeout(countTest, timeout_duration=5)
 
  if __name__ == __main__:
  runTest()
 
 I'm confused. What does it cause IDLE to do? I tried running the
 script and it ran fine. I killed it 17346 since I have no intention of
 letting it tie up my work for your extraordinary large iteration
 number.
 
 I'm using Python 2.4 on Windows XP.
 
 Mike

Sorry, I need a better proof-reader.

When I run that code, the output gets to ~26 and then IDLE (or the
shell, I'm not sure which) hangs and there's  zero CPU activity in the
pythonw.exe process.
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RE: Timeout test hangs IDLE

2007-12-05 Thread Andreas Tawn 
 
  On Dec 5, 6:00 am, Andreas Tawn [EMAIL PROTECTED] wrote:
   I'm trying to integrate the timeout function from 
  herehttp://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/47
  3878into a
   long running automation script and the following code 
  causes IDLE after
   20 or 30 iterations in countTest.
  
   This is in 2.5, XP and there's no traceback.
  
   Could someone point me at the user error?
  
   Thanks in advance.
  
   def countTest():
   for i in xrange(1000):
   print i
   return True
  
   def timeout(func, args=(), kwargs={}, timeout_duration=1, 
  default=None):
   import threading
   class InterruptableThread(threading.Thread):
   def __init__(self):
   threading.Thread.__init__(self)
   self.result = None
  
   def run(self):
   try:
   self.result = func(*args, **kwargs)
   except:
   self.result = default
  
   it = InterruptableThread()
   it.start()
   it.join(timeout_duration)
   if it.isAlive():
   return default
   else:
   return it.result
  
   def runTest():
   timeout(countTest, timeout_duration=5)
  
   if __name__ == __main__:
   runTest()
  
  I'm confused. What does it cause IDLE to do? I tried running the
  script and it ran fine. I killed it 17346 since I have no 
 intention of
  letting it tie up my work for your extraordinary large iteration
  number.
  
  I'm using Python 2.4 on Windows XP.
  
  Mike
 
 Sorry, I need a better proof-reader.
 
 When I run that code, the output gets to ~26 and then IDLE (or the
 shell, I'm not sure which) hangs and there's  zero CPU activity in the
 pythonw.exe process.

Also, I should say that the the idea is that the huge iteration should
timeout after 5 seconds. I only gave it a 1000 range because I
didn't know how fast it would get through the loop. Perhaps you stopped
it before the timeout triggered?

Cheers,

Drea
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Re: Timeout test hangs IDLE

2007-12-05 Thread Sergio Correia 
I once made a small app that used threads on IDLE.

There was a strange error when using 'print'  threads. When what I printed
filled the entire screen, instead of moving all the text up, IDLE just
hanged. Try running your code from the shell instead, to see if the problem
is in IDLE.

HTH,
Sergio

On Dec 5, 2007 5:07 PM, [EMAIL PROTECTED] wrote:

 On Dec 5, 10:37 am, Andreas Tawn [EMAIL PROTECTED] wrote:
On Dec 5, 6:00 am, Andreas Tawn [EMAIL PROTECTED] wrote:
 I'm trying to integrate the timeout function from
herehttp://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/47
3878into a
 long running automation script and the following code
causes IDLE after
 20 or 30 iterations in countTest.
 
 This is in 2.5, XP and there's no traceback.
 
 Could someone point me at the user error?
 
 Thanks in advance.
 
 def countTest():
 for i in xrange(1000):
 print i
 return True
 
 def timeout(func, args=(), kwargs={}, timeout_duration=1,
default=None):
 import threading
 class InterruptableThread(threading.Thread):
 def __init__(self):
 threading.Thread.__init__(self)
 self.result = None
 
 def run(self):
 try:
 self.result = func(*args, **kwargs)
 except:
 self.result = default
 
 it = InterruptableThread()
 it.start()
 it.join(timeout_duration)
 if it.isAlive():
 return default
 else:
 return it.result
 
 def runTest():
 timeout(countTest, timeout_duration=5)
 
 if __name__ == __main__:
 runTest()
 
I'm confused. What does it cause IDLE to do? I tried running the
script and it ran fine. I killed it 17346 since I have no
   intention of
letting it tie up my work for your extraordinary large iteration
number.
 
I'm using Python 2.4 on Windows XP.
 
Mike
 
   Sorry, I need a better proof-reader.
 
   When I run that code, the output gets to ~26 and then IDLE (or the
   shell, I'm not sure which) hangs and there's  zero CPU activity in the
   pythonw.exe process.
 
  Also, I should say that the the idea is that the huge iteration should
  timeout after 5 seconds. I only gave it a 1000 range because I
  didn't know how fast it would get through the loop. Perhaps you stopped
  it before the timeout triggered?
 
  Cheers,
 
  Drea

 No...I ran it for at least 30-60 seconds. Making a thread stop on
 command is a pain though.

 This link taught me one way to do it, but I cannot vouch how will it
 works as I've never aborted any of my threads:

 http://wiki.wxpython.org/LongRunningTasks

 Mike
 --
 http://mail.python.org/mailman/listinfo/python-list

-- 
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Timeout test hangs IDLE

2007-12-05 Thread Andreas Tawn 
I'm trying to integrate the timeout function from here
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/473878 into a
long running automation script and the following code causes IDLE after
20 or 30 iterations in countTest.

This is in 2.5, XP and there's no traceback.

Could someone point me at the user error?

Thanks in advance.


def countTest():
for i in xrange(1000):
print i
return True

def timeout(func, args=(), kwargs={}, timeout_duration=1, default=None):
import threading
class InterruptableThread(threading.Thread):
def __init__(self):
threading.Thread.__init__(self)
self.result = None

def run(self):
try:
self.result = func(*args, **kwargs)
except:
self.result = default

it = InterruptableThread()
it.start()
it.join(timeout_duration)
if it.isAlive():
return default
else:
return it.result

def runTest():
timeout(countTest, timeout_duration=5)

if __name__ == __main__:
runTest()
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Re: Timeout test hangs IDLE

2007-12-05 Thread kyosohma 
On Dec 5, 6:00 am, Andreas Tawn [EMAIL PROTECTED] wrote:
 I'm trying to integrate the timeout function from 
 herehttp://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/473878into a
 long running automation script and the following code causes IDLE after
 20 or 30 iterations in countTest.

 This is in 2.5, XP and there's no traceback.

 Could someone point me at the user error?

 Thanks in advance.

 def countTest():
 for i in xrange(1000):
 print i
 return True

 def timeout(func, args=(), kwargs={}, timeout_duration=1, default=None):
 import threading
 class InterruptableThread(threading.Thread):
 def __init__(self):
 threading.Thread.__init__(self)
 self.result = None

 def run(self):
 try:
 self.result = func(*args, **kwargs)
 except:
 self.result = default

 it = InterruptableThread()
 it.start()
 it.join(timeout_duration)
 if it.isAlive():
 return default
 else:
 return it.result

 def runTest():
 timeout(countTest, timeout_duration=5)

 if __name__ == __main__:
 runTest()

I'm confused. What does it cause IDLE to do? I tried running the
script and it ran fine. I killed it 17346 since I have no intention of
letting it tie up my work for your extraordinary large iteration
number.

I'm using Python 2.4 on Windows XP.

Mike
-- 
http://mail.python.org/mailman/listinfo/python-list

Re: Timeout test hangs IDLE

2007-12-05 Thread kyosohma 
On Dec 5, 10:37 am, Andreas Tawn [EMAIL PROTECTED] wrote:
   On Dec 5, 6:00 am, Andreas Tawn [EMAIL PROTECTED] wrote:
I'm trying to integrate the timeout function from
   herehttp://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/47
   3878into a
long running automation script and the following code
   causes IDLE after
20 or 30 iterations in countTest.

This is in 2.5, XP and there's no traceback.

Could someone point me at the user error?

Thanks in advance.

def countTest():
for i in xrange(1000):
print i
return True

def timeout(func, args=(), kwargs={}, timeout_duration=1,
   default=None):
import threading
class InterruptableThread(threading.Thread):
def __init__(self):
threading.Thread.__init__(self)
self.result = None

def run(self):
try:
self.result = func(*args, **kwargs)
except:
self.result = default

it = InterruptableThread()
it.start()
it.join(timeout_duration)
if it.isAlive():
return default
else:
return it.result

def runTest():
timeout(countTest, timeout_duration=5)

if __name__ == __main__:
runTest()

   I'm confused. What does it cause IDLE to do? I tried running the
   script and it ran fine. I killed it 17346 since I have no
  intention of
   letting it tie up my work for your extraordinary large iteration
   number.

   I'm using Python 2.4 on Windows XP.

   Mike

  Sorry, I need a better proof-reader.

  When I run that code, the output gets to ~26 and then IDLE (or the
  shell, I'm not sure which) hangs and there's  zero CPU activity in the
  pythonw.exe process.

 Also, I should say that the the idea is that the huge iteration should
 timeout after 5 seconds. I only gave it a 1000 range because I
 didn't know how fast it would get through the loop. Perhaps you stopped
 it before the timeout triggered?

 Cheers,

 Drea

No...I ran it for at least 30-60 seconds. Making a thread stop on
command is a pain though.

This link taught me one way to do it, but I cannot vouch how will it
works as I've never aborted any of my threads:

http://wiki.wxpython.org/LongRunningTasks

Mike
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