human
Solve the following python programming problem given the following code:
@ pytest.fixture (scope = 'module') 
def trans(request) : 
    dsn = make_dsn_from_env (os.environ) 
    connection = psycopg2.connect (dsn) 
    transaction = Transaction (request, Node) 
    node_ids.clear () 
    transaction.install () 
    transaction.commit () 
    def fin() : 
        transaction.uninstall () 
        transaction.commit () 
request.addfinalizer (fin) 
    return transaction 

    
    

    Fix the buggy line: transaction = Transaction (request, Node)
assistant
#Here is Python code to fix the buggy line: transaction = Transaction (request, Node)
.

transaction = Transaction (connection, Node)