python - 导入 Flask TypeError 时：issubclass() arg 1 必须是一个类

Question

使用 python 3.8，烧瓶 1.1.2

使用 pycharm 调试错误模式时发现，当我导入时from flask_restful import Api它会输出错误。

奇怪的是，一切正常，突然出现错误。出现错误后代码仍然运行。

我已经阅读了其他相关帖子，但仍然不理解。

完整代码：

from flask import Flask, request, render_template, jsonify
from flask_restful import Api

完整追溯：

Traceback (most recent call last):
  File "/snap/pycharm-community/238/plugins/python-ce/helpers/pydev/_pydevd_bundle/pydevd_xml.py", line 169, in _get_type
    if resolver.can_provide(type_object, type_name):
  File "/snap/pycharm-community/238/plugins/python-ce/helpers/pydev/pydevd_plugins/extensions/types/pydevd_plugin_numpy_types.py", line 28, in can_provide
    return nd_array is not None and issubclass(type_object, nd_array)
TypeError: issubclass() arg 1 must be a class

标签： pythonpycharmpydev