human
Solve the following python programming problem given the following code:
@ pytest.fixture (scope = 'session') 
def database(request) : 
    config = get_config (pg_host) 
    pg_host = config.postgresql.host 
    pg_port = config.postgresql.port 
    pg_user = config.postgresql.user 
    pg_db = config.postgresql.db 
    init_postgresql_database (psycopg2, pg_user, pg_host, pg_port, pg_db) 
    @ request.addfinalizer 
    def drop_database() : 
        drop_postgresql_database (psycopg2, pg_user, pg_host, pg_port, pg_db) 
return 'postgresql://{}@{}:{}/{}'.format (pg_user, pg_host, pg_port, pg_db) 

    
    

    Fix the buggy line: config = get_config (pg_host)
assistant
#Here is Python program to fix the buggy line: config = get_config (pg_host)
.

config = get_config (request)