windows下pip安装python模块时报错总结

前言：

　　　这几天把python版本升级后，发现pip安装模块好多都报错（暂不确定是不是因为升级导致的），我定睛一看，发现是权限的问题，那么怎么解决呢？

1 权限问题

C:\Users\ljf>pip install xlwt

Exception:
Traceback (most recent call last):
File "c:\program files\python35\lib\site-packages\pip\basecommand.py", line 21
1, in main
status = self.run(options, args)
File "c:\program files\python35\lib\site-packages\pip\commands\install.py", li
ne 311, in run
root=options.root_path,
File "c:\program files\python35\lib\site-packages\pip\req\req_set.py", line 64
6, in install
**kwargs
File "c:\program files\python35\lib\site-packages\pip\req\req_install.py", lin
e 803, in install
self.move_wheel_files(self.source_dir, root=root)
File "c:\program files\python35\lib\site-packages\pip\req\req_install.py", lin
e 998, in move_wheel_files
isolated=self.isolated,
File "c:\program files\python35\lib\site-packages\pip\wheel.py", line 339, in
move_wheel_files
clobber(source, lib_dir, True)
File "c:\program files\python35\lib\site-packages\pip\wheel.py", line 310, in
clobber
ensure_dir(destdir)
File "c:\program files\python35\lib\site-packages\pip\utils\__init__.py", line
71, in ensure_dir
os.makedirs(path)
File "c:\program files\python35\lib\os.py", line 241, in makedirs
mkdir(name, mode)
PermissionError: [WinError 5] 拒绝访问。: 'c:\\program files\\python35\\Lib\\sit
e-packages\\xlwt'

　　注意看我标红的那部分，提示说权限错误，拒绝访问，我们这样解决：

使用管理员身份运行cmd