Bugs item #1208304, was opened at 2005-05-25 09:20
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Category: Extension Modules
Group: Python 2.4
Status: Open
Resolution: None
Priority: 5
Submitted By: Petr Toman (manekcz)
Assigned to: Nobody/Anonymous (nobody)
Summary: urllib2's urlopen() method causes a memory leak
Initial Comment:
It seems that the urlopen(url) methd of the urllib2 module
leaves some undestroyable objects in memory.
Please try the following code:
==========================
if __name__ == '__main__':
import urllib2
a = urllib2.urlopen('http://www.google.com')
del a # or a = None or del(a)
# check memory on memory leaks
import gc
gc.set_debug(gc.DEBUG_SAVEALL)
gc.collect()
for it in gc.garbage:
print it
==========================
In our code, we're using lots of urlopens in a loop and
the number of unreachable objects grows beyond all
limits :) We also tried a.close() but it didn't help.
You can also try the following:
==========================
def print_unreachable_len():
# check memory on memory leaks
import gc
gc.set_debug(gc.DEBUG_SAVEALL)
gc.collect()
unreachableL = []
for it in gc.garbage:
unreachableL.append(it)
return len(str(unreachableL))
if __name__ == '__main__':
print "at the beginning", print_unreachable_len()
import urllib2
print "after import of urllib2", print_unreachable_len()
a = urllib2.urlopen('http://www.google.com')
print 'after urllib2.urlopen', print_unreachable_len()
del a
print 'after del', print_unreachable_len()
==========================
We're using WindowsXP with latest patches, Python 2.4
(ActivePython 2.4 Build 243 (ActiveState Corp.) based on
Python 2.4 (#60, Nov 30 2004, 09:34:21) [MSC v.1310
32 bit (Intel)] on win32).
----------------------------------------------------------------------
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https://sourceforge.net/tracker/?func=detail&atid=105470&aid=1208304&group_id=5470
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