ModuleNotFoundError: No module named ‘flask._compat

使用flask_script管理flask啟動

注意：

• 最后兩個錯有解決沒有略過至于報錯順序
• 在解決完flask版本 Jinja2 有可能會報錯 看自己的版本 最后一個Jinja2錯誤是復現(xiàn)出來的

代碼：

from flask import Flask
import config
from flask_script import Manager

app=Flask(__name__)

#app.config.from_object(config.MyConfig)

manager = Manager(app)



if __name__ == '__main__':
    manager.run()

報錯信息

Traceback (most recent call last):
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 843, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/Users/tly/opt/anaconda3/envs/FlaskProject/lib/python3.8/site-packages/flask_script/__init__.py", line 15, in <module>
    from flask._compat import text_type
ModuleNotFoundError: No module named 'flask._compat'

查看安裝的包

pip  freeze  

發(fā)現(xiàn)安裝的flask的版本過高沒有 直接拉取的話就是最新版的

版本降低即可解決

pip3 install flask==1.1.4 

版本更新完

接著又報錯

Traceback (most recent call last):
  File "test3.py", line 1, in <module>
    from flask import Flask
  File "/Users/tly/opt/anaconda3/envs/FlaskProject/lib/python3.8/site-packages/flask/__init__.py", line 14, in <module>
    from jinja2 import escape
  File "/Users/tly/opt/anaconda3/envs/FlaskProject/lib/python3.8/site-packages/jinja2/__init__.py", line 12, in <module>
    from .environment import Environment
  File "/Users/tly/opt/anaconda3/envs/FlaskProject/lib/python3.8/site-packages/jinja2/environment.py", line 25, in <module>
    from .defaults import BLOCK_END_STRING
  File "/Users/tly/opt/anaconda3/envs/FlaskProject/lib/python3.8/site-packages/jinja2/defaults.py", line 3, in <module>
    from .filters import FILTERS as DEFAULT_FILTERS  # noqa: F401
  File "/Users/tly/opt/anaconda3/envs/FlaskProject/lib/python3.8/site-packages/jinja2/filters.py", line 13, in <module>
    from markupsafe import soft_unicode
ImportError: cannot import name 'soft_unicode' from 'markupsafe' 

查看markupsafe版本發(fā)現(xiàn)是2.1.1

markupsafe版本降低

python -m pip install markupsafe==2.0.1

來繼續(xù)報錯

Traceback (most recent call last):
  File "test3.py", line 1, in <module>
    from flask import Flask
  File "/Users/tly/opt/anaconda3/envs/FlaskProject/lib/python3.8/site-packages/flask/__init__.py", line 14, in <module>
    from jinja2 import escape
ImportError: cannot import name 'escape' from 'jinja2' (/Users/tly/opt/anaconda3/envs/FlaskProject/lib/python3.8/site-packages/jinja2/__init__.py)

繼續(xù)降版本

pip install Jinja2==3.0.0

到此為止輸入命令python test3.py runserver項目啟動起來

總結(jié)

以上為個人經(jīng)驗，希望能給大家一個參考，也希望大家多多支持腳本之家。

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