centos8 安装软件时候，https的软件源不能自动下载的问题如何解决？总不能一个一个手动下载吧，从网上找了好多方法，都没用

Question

Installed /usr/python-3.7.3/lib/python3.7/site-packages/Twisted-20.3.0-py3.7-linux-x86_64.egg
Processing dependencies for Twisted==20.3.0
Searching for constantly>=15.1
Reading https://pypi.org/simple/constantly/
Download error on https://pypi.org/simple/constantly/: unknown url type: https -- Some packages may not be found!
Couldn't find index page for 'constantly' (maybe misspelled?)
Scanning index of all packages (this may take a while)
Reading https://pypi.org/simple/
Download error on https://pypi.org/simple/: unknown url type: https -- Some packages may not be found!
No local packages or working download links found for constantly>=15.1
error: Could not find suitable distribution for Requirement.parse('constantly>=15.1')

Answer 1

pip3 install 模块名 -d -i https://mirrors.aliyun.com/pypi/simple/