Re: Simple threading example freezes IDLE?
idle doesn't work well with threads On 9/27/07, 7stud <[EMAIL PROTECTED]> wrote: > > On Sep 26, 5:01 pm, "Sergio Correia" <[EMAIL PROTECTED]> wrote: > > > > I'm using IDLE 1.2.1, Python 2.5.1, and Tk 8.4. Does anyone has any > > idea of why is this happening? > > > > Two mainloops == bad. IDLE == 1 mainloop. your program == 1 > mainloop. > > -- > http://mail.python.org/mailman/listinfo/python-list > -- http://www.goldwatches.com/mens/cufflinks.html http://www.jewelerslounge.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Simple threading example freezes IDLE?
On Sep 26, 5:01 pm, "Sergio Correia" <[EMAIL PROTECTED]> wrote: > > I'm using IDLE 1.2.1, Python 2.5.1, and Tk 8.4. Does anyone has any > idea of why is this happening? > Two mainloops == bad. IDLE == 1 mainloop. your program == 1 mainloop. -- http://mail.python.org/mailman/listinfo/python-list
Re: Simple threading example freezes IDLE?
I think I have pinpointed the error: When the -print- command fills the screen, IDLE crashes. That is, if i have 30 empty lines before I start to push the current screen upwards, when the last of those lines is used, and its time to push the screen upwards, IDLE crashes. I'm using IDLE 1.2.1, Python 2.5.1, and Tk 8.4. Does anyone has any idea of why is this happening? Thanks, Sergio Example code ---> http://pastebin.com/f21868e26 import time import Queue import threading class Worker(threading.Thread): def __init__(self, inQueue, **kwds): threading.Thread.__init__(self, **kwds) self.inQueue = inQueue self.setDaemon(True) self.start() def run(self): while True: item = self.inQueue.get() print item self.inQueue.task_done() time.sleep(0.1) qSymbols = Queue.Queue() symbols = range(50) for symbol in sorted(symbols): qSymbols.put_nowait(symbol) Worker(qSymbols) # Start thread qSymbols.join() print "The End..." On 9/26/07, Sergio Correia <[EMAIL PROTECTED]> wrote: > I think the -print- command, as used in IDLE, is not thread-safe. I > was bitten by an issue like that today, and the problem ended up being > the -print- command I used. > > On the cmd line, it works per-fect-ly.. but IDLE seems to be the culprit. > A possible answer seems to be to write a wrapper for print that makes > it thread safe (with the help of a lock. > > On 9/19/07, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > > hey all, > > > > For my study I'm writing a simple threaded webcrawler and I am trying > > to do this in python. But somehow, using threads causes IDLE to crash > > on Windows XP (with the latest python distribution 2.5.1). Even a > > simple example such as this: > > > > import thread, time > > > > def doSomething(): > > print "something" > > > > for i in range(2): > > thread.start_new(doSomething, ()) > > > > causes IDLE to freeze when I type it in the interpreter. Using the > > python command line everything works just fine. Using IDLE on Debian > > linux also does not cause anything to crash. What am I overlooking? > > > > regards, Writser Cleveringa > > > > -- > > http://mail.python.org/mailman/listinfo/python-list > > > -- http://mail.python.org/mailman/listinfo/python-list
Re: Simple threading example freezes IDLE?
I think the -print- command, as used in IDLE, is not thread-safe. I was bitten by an issue like that today, and the problem ended up being the -print- command I used. On the cmd line, it works per-fect-ly.. but IDLE seems to be the culprit. A possible answer seems to be to write a wrapper for print that makes it thread safe (with the help of a lock. On 9/19/07, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > hey all, > > For my study I'm writing a simple threaded webcrawler and I am trying > to do this in python. But somehow, using threads causes IDLE to crash > on Windows XP (with the latest python distribution 2.5.1). Even a > simple example such as this: > > import thread, time > > def doSomething(): > print "something" > > for i in range(2): > thread.start_new(doSomething, ()) > > causes IDLE to freeze when I type it in the interpreter. Using the > python command line everything works just fine. Using IDLE on Debian > linux also does not cause anything to crash. What am I overlooking? > > regards, Writser Cleveringa > > -- > http://mail.python.org/mailman/listinfo/python-list > -- http://mail.python.org/mailman/listinfo/python-list
Simple threading example freezes IDLE?
hey all, For my study I'm writing a simple threaded webcrawler and I am trying to do this in python. But somehow, using threads causes IDLE to crash on Windows XP (with the latest python distribution 2.5.1). Even a simple example such as this: import thread, time def doSomething(): print "something" for i in range(2): thread.start_new(doSomething, ()) causes IDLE to freeze when I type it in the interpreter. Using the python command line everything works just fine. Using IDLE on Debian linux also does not cause anything to crash. What am I overlooking? regards, Writser Cleveringa -- http://mail.python.org/mailman/listinfo/python-list
