traceback (most recent call last): file "d:\pycharm\sqlalchemy\youtube\tut1.py", line 20, in table = meta.tables['customer'] attributeerror: 'nonetype' object has no attribute 'tables'
0
traceback (most recent call last): file "d:\pycharm\sqlalchemy\youtube\tut1.py", line 20, in table = meta.tables['customer'] attributeerror: 'nonetype' object has no attribute 'tables'