how do i set a timeout value for python's mech

问题:

How do i set a timeout value for python's mechanize?

回答1:

Alex is correct: mechanize.urlopen takes a timeout argument. Therefore, just insert a number of seconds in floating point: mechanize.urlopen('http://url/', timeout=30.0).

The background, from the source of mechanize.urlopen:

def urlopen(url, data=None, timeout=_sockettimeout._GLOBAL_DEFAULT_TIMEOUT):
    ...
    return _opener.open(url, data, timeout)

What is mechanize._sockettimeout._GLOBAL_DEFAULT_TIMEOUT you ask? It's just the socket module's setting.

import socket

try:
    _GLOBAL_DEFAULT_TIMEOUT = socket._GLOBAL_DEFAULT_TIMEOUT
except AttributeError:
    _GLOBAL_DEFAULT_TIMEOUT = object()

回答2:

If you're using Python 2.6 or better, and a correspondingly updated version of mechanize, mechanize.urlopen should accept a timeout=... optional argument which seems to be what you're looking for.

回答3:

I believe something along the lines of

mechanize._sockettimeout._GLOBAL_DEFAULT_TIMEOUT = 100

will override the default value Mechanize uses.