python3.x中pip升級報錯

python3.x中使用pip安裝包 在使用pip進行安裝python擴展包時，可能遇到警告或安裝失敗，提示語句爲： You are using pip version 8.1.1, however version 9.0.1 is available. You should consider upgrading via the ‘python -m pip install –upgrade pi

>>阅读原文<<