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'