ERROR: Could not install packages due to an EnvironmentError: [Errno 13] Permission denied: '/Library/Python/2.7/site-packages/itsdangerous' Consider using the `--user` option or check the per

近期練習flask寫個blog，

安裝flask擴展時

pip install Flask-WTF

報ERROR: Could not install packages due to an EnvironmentError: [Errno 13] Permission denied: '/Library/Python/2.7/site-packages/itsdangerous' Consider using the `--user` option or check the permissions.

如圖所示

這裡報這個錯，主要是因為許可權不夠 ，用下麵的命令安裝即可

pip install Flask-WTF --user

如上圖所示

這樣就安裝成功了