[web2py] Book twitter post recipe has errors.

[JoeCodeswell]

Dear web2py users,

The Book twitter post recipe has errors. I know about 2 of them. I
could use some help with the last one.

Here is the code from the book in chapter 12.

def post_tweet(username,password,message):
    import urllib, urlib2, base64
    import gluon.contrib.simplejson as sj
    args= urllib.urlencode([('status',message)])
    headers={}
    headers['Authorization'] = 'Basic '+base64.b64encode(username
+':'+password)
    request = urllib2.Request('http://twitter.com/statuses/
update.json', args, headers)
    return  sj.loads(urllib2.urlopen(req).read())


    import urllib, urlib2, base64
should be
    import urllib, urllib2, base64


    request = urllib2.Request('http://twitter.com/statuses/
update.json', args, headers)
should be
    req = urllib2.Request('http://twitter.com/statuses/update.json',
args, headers)

Here is the help i need. The
  return  sj.loads(urllib2.urlopen(req).read())
statement causes
  raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)
    HTTPError: HTTP Error 401: Unauthorized

I am sure I am using a valid user name and password. Does anyone have
any ideas?

I suspect the first argument to the urllib2.Request method ==
  'http://twitter.com/statuses/update.json'
I think '/statuses/' could possibly be a misspelling. Does anyone
know?

Thanks for the help in advance.

Love and peace,

Joe