Python's `urlparse`: Adding GET keywords to a URL

Question

I'm doing this:

urlparse.urljoin('http://example.com/mypage', '?name=joe')

And I get this:

'http://example.com/?name=joe'

While I want to get this:

'http://example.com/mypage?name=joe'

What am I doing wrong?

Why don't you just concatenate them?

Ikke
– Ikke

2011-03-08 12:59:16 +00:00
Commented Mar 8, 2011 at 12:59 — Ikke
– Ikke, Commented Mar 8, 2011 at 12:59

jd. · Accepted Answer · 2011-03-08 13:22:22Z

5

You could use urlparse.urlunparse :

import urlparse
parsed = list(urlparse.urlparse('http://example.com/mypage'))
parsed[4] = 'name=joe'
urlparse.urlunparse(parsed)

answered Mar 8, 2011 at 13:22

jd.

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Comments

Community · Accepted Answer · 2017-05-23 12:06:25Z

1

You're experiencing a known bug which affects Python 2.4-2.6.

If you can't change or patch your version of Python, @jd's solution will work around the issue.

However, if you need a more generic solution that works as a standard urljoin would, you can use a wrapper method which implements the workaround for that specific use case, and default to the standard urljoin() otherwise.

For example:

import urlparse

def myurljoin(base, url, allow_fragments=True):
    if url[0] != "?": 
        return urlparse.urljoin(base, url, allow_fragments)
    if not allow_fragments: 
        url = url.split("#", 1)[0]
    parsed = list(urlparse.urlparse(base))
    parsed[4] = url[1:] # assign params field
    return urlparse.urlunparse(parsed)

edited May 23, 2017 at 12:06

CommunityBot

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answered Mar 8, 2011 at 13:56

Shawn Chin

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Comments

Ram Rachum · Accepted Answer · 2011-03-08 16:14:19Z

1

I solved it by bundling Python 2.6's urlparse module with my project. I also had to bundle namedtuple which was defined in collections, since urlparse uses it.

answered Mar 8, 2011 at 16:14

Ram Rachum

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Comments

payne · Accepted Answer · 2011-03-08 12:59:22Z

0

Are you sure? On Python 2.7:

>>> import urlparse
>>> urlparse.urljoin('http://example.com/mypage', '?name=joe')
'http://example.com/mypage?name=joe'

answered Mar 8, 2011 at 12:59

payne

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2 Comments

Ram Rachum Over a year ago

Damn, it seems to be a Python 2.5 bug! It's fixed in Python 2.6. What can I do? I can't upgrade to 2.6, this is on GAE.

Shawn Chin Over a year ago

I can confirm that it works as expected on Python 2.3 but not 2.4.

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