MAC 爲python3安裝 beautifulsoup4

先裝pip （終端）輸入命令：sudo easy_install pip

安bs4 輸入命令：pip install beautifulsoup4

出現錯誤
OSError: [Errno 13] Permission denied:

輸入命令：sudo easy_install beautifulsoup4

這時把bs裝到了Mac系統自帶了Python2.7

把beautifulsoup4裝到Python3

輸入命令：pip3 install beautifulsoup4