環(huán)境依賴
python3.8.10
flask==1.1.4
sqlalchemy==0.8.0
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "H:\CodeSpace\learn\message-board\app.py", line 5, in <module>
from flask_sqlalchemy import SQLAlchemy
File "H:\CodeSpace\learn\hello\.venv\lib\site-packages\flask_sqlalchemy\__init__.py", line 13, in <module>
import sqlalchemy
File "H:\CodeSpace\learn\hello\.venv\lib\site-packages\sqlalchemy\__init__.py", line 10, in <module>
from .sql import (
File "H:\CodeSpace\learn\hello\.venv\lib\site-packages\sqlalchemy\sql\__init__.py", line 7, in <module>
from .expression import (
File "H:\CodeSpace\learn\hello\.venv\lib\site-packages\sqlalchemy\sql\expression.py", line 34, in <module>
from .. import util, exc, inspection
File "H:\CodeSpace\learn\hello\.venv\lib\site-packages\sqlalchemy\util\__init__.py", line 7, in <module>
from .compat import callable, cmp, reduce, \
File "H:\CodeSpace\learn\hello\.venv\lib\site-packages\sqlalchemy\util\compat.py", line 62, in <module>
from urlparse import parse_qsl
ModuleNotFoundError: No module named 'urlparse'
出現(xiàn)這個(gè)問(wèn)題的原因是python3中不支持from urlparse import parse_qsl這個(gè)寫(xiě)法集晚，取而代之的是from urllib.parse import parse_qsl
解決辦法：
升級(jí)sqlalchemy版本到sqlalchemy = "1.3.24"
