如果沒有安裝包管理工具就執(zhí)行

1.首先執(zhí)行命令：sudo easy_install pip

安裝完成后執(zhí)行命令：pip install beautifulsoup4

然后運(yùn)行，然后問題來了，居然提示沒有權(quán)限？？？

Collecting beautifulsoup4

Using cached beautifulsoup4-4.4.0-py2-none-any.whl

Installing collected packages: beautifulsoup4

Exception:

Traceback (most recent call last):

File "/Library/Python/2.7/site-packages/pip-7.1.0-py2.7.egg/pip/basecommand.py", line 223, in main

status = self.run(options, args)

File "/Library/Python/2.7/site-packages/pip-7.1.0-py2.7.egg/pip/commands/install.py", line 299, in run

root=options.root_path,

File "/Library/Python/2.7/site-packages/pip-7.1.0-py2.7.egg/pip/req/req_set.py", line 646, in install

**kwargs

File "/Library/Python/2.7/site-packages/pip-7.1.0-py2.7.egg/pip/req/req_install.py", line 813, in install

self.move_wheel_files(self.source_dir, root=root)

File "/Library/Python/2.7/site-packages/pip-7.1.0-py2.7.egg/pip/req/req_install.py", line 1008, in move_wheel_files

isolated=self.isolated,

File "/Library/Python/2.7/site-packages/pip-7.1.0-py2.7.egg/pip/wheel.py", line 339, in move_wheel_files

clobber(source, lib_dir, True)

File "/Library/Python/2.7/site-packages/pip-7.1.0-py2.7.egg/pip/wheel.py", line 310, in clobber

ensure_dir(destdir)

File "/Library/Python/2.7/site-packages/pip-7.1.0-py2.7.egg/pip/utils/__init__.py", line 70, in ensure_dir

os.makedirs(path)

File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/os.py", line 157, in makedirs

mkdir(name, mode)

OSError: [Errno 13] Permission denied: '/Library/Python/2.7/site-packages/beautifulsoup4-4.4.0.dist-info'

這時(shí)候輸入命令：sudo easy_install beautifulsoup4

進(jìn)入Python輸入：from bs4 import BeautifulSoup

會(huì)發(fā)現(xiàn)提示：沒有這個(gè)模塊名，那是因?yàn)镸ac系統(tǒng)自帶了Python2.7 你要把beautifulsoup4寫到Python3的目錄文件里去

命令行輸入：pip3 install beautifulsoup4