human
Solve the following python programming problem given the following code:
@ with_ioloop 
@ with_couchdb 
def test_update_user(baseurl, ioloop) : 
    s = trombi.Server (baseurl, io_loop = ioloop) 
    userdoc = [] 
    def add_callback(doc) : 
        assert (not doc.error) 
        userdoc.append (doc) 
        ioloop.stop () 
s.add_user ('updatetest', 'test', add_callback) 
    ioloop.start () 
    def update_callback(doc) : 
        assert (not doc.error) 
        userdoc.append (doc) 
        ioloop.stop () 
userdoc [0] ['roles'].append ('test') 
    s.update_user (userdoc [0], update_callback) 
    ioloop.start () 
    eq (userdoc [1] ['roles'], ['test']) 
    def update_passwd_callback(doc) : 
        assert (not doc.error) 
        userdoc.append (doc) 
        ioloop.stop () 
s.update_user_password ('updatetest', 'test2', update_passwd_callback) 
    ioloop.start () 
    eq (update_passwd_callback [1] ['salt'], userdoc [2] ['salt']) 
    eq ((userdoc [1] ['password_sha'] != userdoc [2] ['password_sha']), True) 

    
    

    Fix the buggy line: eq (update_passwd_callback [1] ['salt'], userdoc [2] ['salt'])
assistant
#Here is Python program to fix the buggy line: eq (update_passwd_callback [1] ['salt'], userdoc [2] ['salt'])
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eq (userdoc [1] ['salt'], userdoc [2] ['salt'])