Package: python-mechanize Version: 0.1.7b-3 python-mechanize 0.1.7 is a total pain to use under Python 2.5 as it doesn't clean up after itself without a lot of convincing, leading to "out of file descriptor" errors in long-running processes, etc.
My testcase is:
import os, subprocess
from mechanize import Browser
subprocess.call(['/bin/ls', '-l', '/proc/%d/fd' % os.getpid()])
br = Browser()
br.open('http://google.co.uk/')
br.close()
subprocess.call(['/bin/ls', '-l', '/proc/%d/fd' % os.getpid()])
which prints:
total 0
lrwx------ 1 lamby lamby 64 2009-03-09 12:09 0 -> /dev/pts/9
lrwx------ 1 lamby lamby 64 2009-03-09 12:09 1 -> /dev/pts/9
lrwx------ 1 lamby lamby 64 2009-03-09 12:09 2 -> /dev/pts/9
lr-x------ 1 lamby lamby 64 2009-03-09 12:09 3 -> /proc/12035/fd
total 0
lrwx------ 1 lamby lamby 64 2009-03-09 12:09 0 -> /dev/pts/9
lrwx------ 1 lamby lamby 64 2009-03-09 12:09 1 -> /dev/pts/9
lrwx------ 1 lamby lamby 64 2009-03-09 12:09 2 -> /dev/pts/9
lrwx------ 1 lamby lamby 64 2009-03-09 12:09 3 -> socket:[44930] <--
lrwx------ 1 lamby lamby 64 2009-03-09 12:09 4 -> socket:[44942] <--
lr-x------ 1 lamby lamby 64 2009-03-09 12:09 5 -> pipe:[44943]
Doing a bit of "manual" GC helps:
import os, gc, subprocess
from mechanize import Browser
subprocess.call(['/bin/ls', '-l', '/proc/%d/fd' % os.getpid()])
br = Browser()
br.open('http://google.co.uk/')
br.close()
del br
gc.collect()
subprocess.call(['/bin/ls', '-l', '/proc/%d/fd' % os.getpid()])
total 0
lrwx------ 1 lamby lamby 64 2009-03-09 12:12 0 -> /dev/pts/9
lrwx------ 1 lamby lamby 64 2009-03-09 12:12 1 -> /dev/pts/9
lrwx------ 1 lamby lamby 64 2009-03-09 12:12 2 -> /dev/pts/9
lr-x------ 1 lamby lamby 64 2009-03-09 12:12 3 -> /proc/12086/fd
total 0
lrwx------ 1 lamby lamby 64 2009-03-09 12:12 0 -> /dev/pts/9
lrwx------ 1 lamby lamby 64 2009-03-09 12:12 1 -> /dev/pts/9
lrwx------ 1 lamby lamby 64 2009-03-09 12:12 2 -> /dev/pts/9
lr-x------ 1 lamby lamby 64 2009-03-09 12:12 3 -> pipe:[45407]
.. but this is, of course, extremely backwards. As an aside, it is
difficult to reliably reproduce this latter behaviour in my application,
where scoping is non-trivial (but certainly not complicated).
From the upstream changelog:
> 2008-09-13 John J Lee <[email protected]>
> * 0.1.8 release.
> * Close sockets. This only affects Python 2.5 (and later) -
> earlier versions of Python were unaffected. See
> http://bugs.python.org/issue1627441
[..]
If it helps, the fix was in r58103 in the mechanize SVN.
Regards,
--
,''`.
: :' : Chris Lamb
`. `'` [email protected]
`-
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