Python can't authenticate with ntlm
Question: I am trying to parse a site on my intranet and when authenticating as below I
get an error saying that authentication is required, which I have already
done. Why am I still getting this 401 error?

Thanks in advance!

> File "C:\Python27\lib\urllib2.py", line 531, in http_error_default raise
> HTTPError(req.get_full_url(), code, msg, hdrs, fp) urllib2.HTTPError: HTTP
> Error 401: Authorization Required
    
    
    import urllib2
    from ntlm import HTTPNtlmAuthHandler
    
    user = r'domain\myuser'
    password = 'mypasswd'
    url = 'http://myinternal.homepage'
    
    passman = urllib2.HTTPPasswordMgrWithDefaultRealm()
    passman.add_password(None, url, user, password)
    # create the NTLM authentication handler
    auth_NTLM = HTTPNtlmAuthHandler.HTTPNtlmAuthHandler(passman)
    
    # create and install the opener
    opener = urllib2.build_opener(auth_NTLM)
    urllib2.install_opener(opener)
    
    # retrieve the result
    response = urllib2.urlopen(url)
    print(response)
    


Answer: Try not putthing the 'r' in front of 'domain\myuser'. I have used this without
the 'r' and it works for me. One thing that helped me- ( i'm guessing you
probably already did . . . just in case though) check the headers that the url
returns to you. I did this with Mechanize
<http://www.pythonforbeginners.com/cheatsheet/python-mechanize-cheat-sheet/>
and based of the headers returned figured out I should be using NTLM auth ( as
seen here). I also have a similar question [How to 'convert' variable of type
instance such that the variable can be used to authenticate when making system
calls](http://stackoverflow.com/questions/21026430/how-to-convert-variable-of-
type-instance-such-that-the-variable-can-be-used-to).

