windows pip安装模块出现Could not fetch URL https://mirrors.aliyun.com/pypi/simple/pip/
问题描述执行pipinstall发现以下报错:CouldnotfetchURLhttps://pypi.org/simple/requests/:Therewasaproblemconfirmingthesslcertificate:HTTPSConnectionPool(host='pypi.org',port=443):Maxretriesexceededwithurl:/simple/req