aF. aF. - 11 months ago 28
Python Question

Checking network connection

I want to see if I can access an online API, but for that I need to have Internet access.

How can I see if there's a connection available and active using Python?


Perhaps you could use something like this:

import urllib2

def internet_on():
        return True
    except urllib2.URLError as err: pass
    return False is one of the IP-addresses for Change to whatever site can be expected to respond quickly. Using a numerical IP-address avoids a DNS lookup, which may block the urllib2.urlopen call for more than a second. Thanks to @rzetterberg for pointing this out.

By specifying the timeout=1 parameter, the call to urlopen will not take much longer than 1 second even if the internet is not "on".