我尝试使用来安装Django，pip install Django==1.11.4但我一直都遇到此错误：
Exception:
Traceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/pip/basecommand.py", line 215, in main
status = self.run(options, args)
File "/usr/local/lib/python2.7/dist-packages/pip/commands/install.py", line 342, in run
prefix=options.prefix_path,
File "/usr/local/lib/python2.7/dist-packages/pip/req/req_set.py", line 784, in install
**kwargs
File "/usr/local/lib/python2.7/dist-packages/pip/req/req_install.py", line 851, in install
self.move_wheel_files(self.source_dir, root=root, prefix=prefix)
File "/usr/local/lib/python2.7/dist-packages/pip/req/req_install.py", line 1064, in move_wheel_files
isolated=self.isolated,
File "/usr/local/lib/python2.7/dist-packages/pip/wheel.py", line 345, in move_wheel_files
clobber(source, lib_dir, True)
File "/usr/local/lib/python2.7/dist-packages/pip/wheel.py", line 316, in clobber
ensure_dir(destdir)
File "/usr/local/lib/python2.7/dist-packages/pip/utils/__init__.py", line 83, in ensure_dir
os.makedirs(path)
File "/usr/lib/python2.7/os.py", line 157, in makedirs
mkdir(name, mode)
OSError: [Errno 13] Permission denied: '/usr/local/lib/python2.7/dist-packages/pytz-2017.2.dist-info'
默认情况下，pip安装在中/usr/local，需要sudo权限。相反，无论何时使用Python模块，都应使用virtualenv。很简单：
全局安装Python virtualenv
sudo pip install virtualenv
创建一个virtualenv
virtualenv Venv
激活您的virtualenv
source Venv/bin/activate
在virtualenv中本地安装Django
pip install django
这样，您不必担心修改全局Python模块及其更安全的问题。
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我来说两句