urllib2 FTP Weirdness
Hans Mulder
hansmu at xs4all.nl
Wed Jan 23 19:45:31 EST 2013
On 24/01/13 00:58:04, Chris Angelico wrote:
> On Thu, Jan 24, 2013 at 7:07 AM, Nick Cash
> <nick.cash at npcinternational.com> wrote:
>> Python 2.7.3 on linux
>>
>> This has me fairly stumped. It looks like
>> urllib2.urlopen("ftp://some.ftp.site/path").read()
>> will either immediately return '' or hang indefinitely. But
>> response = urllib2.urlopen("ftp://some.ftp.site/path")
>> response.read()
>> works fine and returns what is expected. This is only an issue with urllib2, vanilla urllib doesn't do it.
>>
>> The site I first noticed it on is private, but I can reproduce it with "ftp://ftp2.census.gov/".
>
> Confirmed on 2.6.5 on Windows, fwiw. This is extremely weird.
It works fine with 2.7.3 on my Mac.
> Possibly it's some kind of race condition??
If urllib2 is using active mode FTP, then a firewall on your box
could explain what you're seeing. But then, that's why active
mode is hardly used these days.
Hope this helps,
-- HansM
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