ModuleNotFoundError: No module named '_contextvars'
Traceback (most recent call last):
File "D:/MNIST_Demo/main.py", line 3, in <module>
from flask import Flask, jsonify, render_template, request
File "D:\MNIST_Demo\venv_one\lib\site-packages\flask\__init__.py", line 14, in <module>
from jinja2 import escape
File "D:\MNIST_Demo\venv_one\lib\site-packages\jinja2\__init__.py", line 82, in <module>
_patch_async()
File "D:\MNIST_Demo\venv_one\lib\site-packages\jinja2\__init__.py", line 78, in _patch_async
from jinja2.asyncsupport import patch_all
File "D:\MNIST_Demo\venv_one\lib\site-packages\jinja2\asyncsupport.py", line 13, in <module>
import asyncio
File "D:\Python\Anaconda\lib\asyncio\__init__.py", line 8, in <module>
from .base_events import *
File "D:\Python\Anaconda\lib\asyncio\base_events.py", line 39, in <module>
from . import events
File "D:\Python\Anaconda\lib\asyncio\events.py", line 14, in <module>
import contextvars
File "D:\Python\Anaconda\lib\contextvars.py", line 1, in <module>
from _contextvars import Context, ContextVar, Token, copy_context
ModuleNotFoundError: No module named '_contextvars'
求大佬解答
