How do I read a response from Python Requests?

Oli picture Oli · Sep 15, 2013 · Viewed 277.1k times · Source

I have two Python scripts. One uses the Urllib2 library and one uses the Requests library.

I have found Requests easier to implement, but I can't find an equivalent for urlib2's read() function. For example:

...
response = url.urlopen(req)
print response.geturl()
print response.getcode()
data = response.read()
print data

Once I have built up my post url, data = response.read() gives me the content - I am trying to connect to a vcloud director api instance and the response shows the endpoints that I have access to. However if I use the Requests library as follows.....

....

def post_call(username, org, password, key, secret):

    endpoint = '<URL ENDPOINT>'
    post_url = endpoint + 'sessions'
    get_url = endpoint + 'org'
    headers = {'Accept':'application/*+xml;version=5.1', \
               'Authorization':'Basic  '+ base64.b64encode(username + "@" + org + ":" + password), \
               'x-id-sec':base64.b64encode(key + ":" + secret)}
    print headers
    post_call = requests.post(post_url, data=None, headers = headers)
    print post_call, "POST call"
    print post_call.text, "TEXT"
    print post_call.content, "CONTENT"
    post_call.status_code, "STATUS CODE"

....

....the print post_call.text and print post_call.content returns nothing, even though the status code equals 200 in the requests post call.

Why isn't my response from Requests returning any text or content?

Answer

aychedee picture aychedee · Sep 15, 2013

Requests doesn't have an equivalent to Urlib2's read().

>>> import requests
>>> response = requests.get("http://www.google.com")
>>> print response.content
'<!doctype html><html itemscope="" itemtype="http://schema.org/WebPage"><head>....'
>>> print response.content == response.text
True

It looks like the POST request you are making is returning no content. Which is often the case with a POST request. Perhaps it set a cookie? The status code is telling you that the POST succeeded after all.