human
Solve the following python programming problem given the following code:
def test_custom_authorisation(self) : 
    SilkyConfig ().SILKY_AUTHENTICATION = True 
    SilkyConfig ().SILKY_AUTHORISATION = True 
    def custom_authorisation(user) : 
        return user.username.startswith ('mike') 
SilkyConfig ().SILKY_PERMISSIONS = custom_authorisation 
    username_and_password = 'bob' 
    user = User.objects.create (username = username_and_password) 
    user.set_password (user) 
    user.save () 
    self.client.login (username = username_and_password, password = username_and_password) 
    response = self.client.get (silky_reverse ('requests')) 
    self.assertEqual (response.status_code, 403) 
    user.username = 'mike2' 
    user.save () 
    response = self.client.get (silky_reverse ('requests')) 
    self.assertEqual (response.status_code, 200) 

    
    

    Fix the buggy line: user.set_password (user)
assistant
#Here is Python code to fix the buggy line: user.

user.set_password (username_and_password)