Python使用错误总结

【1】cannot import name ‘ParameterSource’ from ‘click.core’

其根本原因在于是black模块，其模块版本可能过时，升级black模块版本即可：

pip install black --upgrade

【2】partially initialized module ‘charset_normalizer’ has no attribute ‘md__mypyc’ (most likely due to a circular import)

pip install chardet

【3】cannot import name ‘_plain_int’ from ‘werkzeug._internal’

pip install --upgrade werkzeug

cannot import name 'url_decode' from 'werkzeug.urls'

pip install --upgrade Flask

【4】Flask返回JSON时中文为Unicode编码

添加如下配置：

app.json.ensure_ascii = False