Api.UserLookUp() throws attribute error when corresponding screen_name is not found

[darshanhegde]

I'm trying to do user-look up by screen_name, when I use a screen name that is not registered in twitter it throws attribute error. example trial goes below:

users = api.UsersLookup(screen_name=["dude_whats_up_is_your_name"])
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "twitter.py", line 3049, in UsersLookup
    return [User.NewFromJsonDict(u) for u in data]
  File "twitter.py", line 1340, in NewFromJsonDict
    return User(id=data.get('id', None),
AttributeError: 'unicode' object has no attribute 'get'

I'm not sure if this is a design decision or a issue, please close it if it's done deliberately, otherwise I think it helps.

[bear]

Definitely a bug - thanks for the report.

[bear]

added a small bit of error handling for the odd way twitter returns an error if the only (or all) of the requested users are not found.

286369e