Python requests library doesn't have all headers

Question

I am using python requests library for a POST request and I expect a return message with an empty payload. I am interested in the headers of the returned message, specifically the 'Location' attribute. I tried the following code:

response=requests.request(method='POST', url=url, headers={'Content-Type':'application/json'}, data=data)
print response.headers ##Displays a case-insensitve map
print response.headers['Location'] ##blows up

Strangely the 'Location' attribute is missing in the headers map. If I try the same POST request on postman, I do get a valid Location attribute. Has anyone else seen this? Is this a bug in the requests library?

I think requests follows redirection, so it actually goes to that location IIRC — jadkik94
– jadkik94, Commented Nov 21, 2013 at 19:42

synthesizerpatel · Accepted Answer · 2013-11-21 19:43:03Z

4

Sounds like everything's working as expected? Check your response.history

From the Requests documentation:

Requests will automatically perform location redirection for all verbs except HEAD.

>>> r = requests.get('http://github.com')
>>> r.url
'https://github.com/'
>>> r.status_code
200
>>> r.history
[<Response [301]>]

From the HTTP Location page on wikipedia:

The HTTP Location header field is returned in responses from an HTTP server under two circumstances:

To ask a web browser to load a different web page. In this circumstance, the Location header should be sent with an HTTP status code of 3xx. It is passed as part of the response by a web server when the requested URI has:
- Moved temporarily, or
- Moved permanently
To provide information about the location of a newly-created resource. In this circumstance, the Location header should be sent with an HTTP status code of 201 or 202.1

answered Nov 21, 2013 at 19:43

synthesizerpatel

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1 Comment

The Governor Over a year ago

Thanks. Setting allow_redirects to False did it. I should have looked into the documentation more thoroughly

jadkik94 · Accepted Answer · 2013-11-21 19:56:01Z

2

The requests library follows redirections automatically.

To take a look at the redirections, look at the history of the requests. More details in the docs.

Or you pass the extra allow_redirects=False parameter when making the request.

edited Nov 21, 2013 at 19:56

answered Nov 21, 2013 at 19:50

jadkik94

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