Hello,

I'm going through the Salesforce API REST guide, and I'm trying to authenticate via session id. My script is in python:

    import urllib, urllib2
    url = 'https://login.salesforce.com/services/oauth2/token'
    values = {
        "grant_type":"password",
        "client_id":"aaaaaaaaaaaa11111111111111",
        "client_secret":"1111111111111",
        "username":"myuser@domain.com",
        "password":"mypassword"
    }
    data = urllib.urlencode(values)
    req = urllib2.Request(url,data)
    sf = urllib2.urlopen(req)

I'm receiving a 400 Error:

    Traceback (most recent call last):
      File "/Users/ZR/Desktop/sf.py", line 14, in <module>
        sf = urllib2.urlopen(req)
      File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 127, in urlopen
        return _opener.open(url, data, timeout)
      File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 410, in open
        response = meth(req, response)
      File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 523, in http_response
        'http', request, response, code, msg, hdrs)
      File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 448, in error
        return self._call_chain(*args)
      File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 382, in _call_chain
        result = func(*args)
      File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 531, in http_error_default
        raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)
    urllib2.HTTPError: HTTP Error 400: Bad Request
    [Finished in 0.4s with exit code 1]

Where have I gone wrong?

Thank you!