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export https_proxy=https://127.0.0.1:10809 http_proxy=http://localhost:10809
错误原因：https_proxy=http://127.0.0.1:10809
https_proxy=http://127.0.0.1:10809
两个代理都应该是 http scheme
http scheme
思考：pip 不支持 sock5 所以不能直接用 export ALL_PROXY=socks5://127.0.0.1:10808
pip
sock5
export ALL_PROXY=socks5://127.0.0.1:10808