使用pip安裝python包的時候,常常會出現如下相似的錯誤python
(test) dongchang-5:test baoshan$ pip3 install requests Collecting requests Could not fetch URL https://pypi.python.org/simple/requests/: There was a problem confirming the ssl certificate: [SSL: TLSV1_ALERT_PROTOCOL_VERSION] tlsv1 alert protocol version (_ssl.c:645) - skipping Could not find a version that satisfies the requirement requests (from versions: ) No matching distribution found for requests
出現這個錯誤的緣由是python.org已經不支持TLSv1.0和TLSv1.1了。更新pip能夠解決這個問題。linux
可是若是使用傳統的python -m pip install --upgrade pip的方式,仍是會出現那個問題。macos
這是一個相互矛盾的問題,你由於TLS證書的問題須要去升級pip,升pip的時候又由於TLS證書的緣由不能下載最新版本的pip。bootstrap
所以只能手動的去升級pip。bash
mac或者linux操做系統:在終端下執行命令:curl
curl https://bootstrap.pypa.io/get-pip.py | python。
而後再使用pip安裝軟件包fetch
(test) dongchang-5:test baoshan$ pip3 install numpy Collecting numpy Downloading https://files.pythonhosted.org/packages/10/59/da8c94da6eaa44651c254dbaec2c901544ab1f88f410c47e2d3092e2d88f/numpy-1.15.0-cp35-cp35m-macosx_10_6_intel.macosx_10_9_intel.macosx_10_9_x86_64.macosx_10_10_intel.macosx_10_10_x86_64.whl (24.4MB) 100% |████████████████████████████████| 25.3MB 298kB/s Installing collected packages: numpy Successfully installed numpy-1.15.0
overui
參考:https://blog.csdn.net/nunchakushuang/article/details/80049528url