human
Solve the following python programming problem given the following code:
@ pytest.fixture (scope = 'session') 
def personas(request) : 
    cmd ('git config --global persona.testhome "First Last <home@example.com>"') 
    cmd ('git config --global persona.testwork "First Last <work@example.com>"') 
    def teardown() : 
        cmd ('git config --global --unset persona.testhome') 
        cmd ('git config --global --unset persona.testwork') 
request.addfinalizer (request) 

    
    

    Fix the buggy line: request.addfinalizer (request)
assistant
#Here is Python program to fix the buggy line: request.

request.addfinalizer (def teardown()