解决ModuleNotFoundError: No module named ‘flask._

詹密的爹

ModuleNotFoundError: No module named ‘flask._compat


使用flask_script管理flask启动

注意：

• 最后两个错有解决没有略过至于报错顺序
  
• 在解决完flask版本 Jinja2 有可能会报错 看自己的版本 最后一个Jinja2错误是复现出来的
  

代码：

1. from flask import Flask
   
2. import config
   
3. from flask_script import Manager
   
4. 
   
5. app=Flask(__name__)
   
6. 
   
7. #app.config.from_object(config.MyConfig)
   
8. 
   
9. manager = Manager(app)
   
10. 
    
11. 
    
12. 
    
13. if __name__ == '__main__':
    
14.     manager.run()

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报错信息

1. 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_typeModuleNotFoundError: No module named 'flask._compat'

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查看安装的包

1. pip  freeze  

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发现安装的flask的版本过高没有 直接拉取的话就是最新版的

版本降低即可解决

1. pip3 install flask==1.1.4

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版本更新完

接着又报错

1. 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_unicodeImportError: cannot import name 'soft_unicode' from 'markupsafe' 

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查看markupsafe版本发现是2.1.1

markupsafe版本降低

1. python -m pip install markupsafe==2.0.1

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来继续报错

1. 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 escapeImportError: cannot import name 'escape' from 'jinja2' (/Users/tly/opt/anaconda3/envs/FlaskProject/lib/python3.8/site-packages/jinja2/__init__.py)

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继续降版本

1. pip install Jinja2==3.0.0

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到此为止输入命令

1. python test3.py runserver

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项目启动起来

总结

以上为个人经验，希望能给大家一个参考，也希望大家多多支持脚本之家。

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