C:\Users\Administrator>pip install XlsWriter 
Collecting XlsWriter 
 Could not find a version that satisfies the requirement XlsWriter (from versions: ) 
No matching distribution found for XlsWriter 
You are using pip version 7.1.2, however version 8.1.1 is available. 
You should consider upgrading via the 'python -m pip install --upgrade pip' command. 

C:\Users\Administrator>python -m pip install --upgrade pip 
Collecting pip 
 Downloading pip-8.1.1-py2.py3-none-any.whl (1.2MB) 
 100% |████████████████████████████████| 1.2MB 61kB/s 
Installing collected packages: pip 
 Found existing installation: pip 7.1.2 
 Uninstalling pip-7.1.2: 
  Successfully uninstalled pip-7.1.2 
Successfully installed pip-8.1.1 

C:\Users\Administrator>pip install XlsWriter 
Collecting XlsWriter 
 Could not find a version that satisfies the requirement XlsWriter (from versions: ) 
No matching distribution found for XlsWriter 

C:\Users\Administrator>pip install XlsxWriter 
Collecting XlsxWriter 
 Downloading XlsxWriter-0.8.6-py2.py3-none-any.whl (134kB) 
 100% |████████████████████████████████| 143kB 26kB/s 
Installing collected packages: XlsxWriter 
Successfully installed XlsxWriter-0.8.6 

C:\Users\Administrator>easy_install XlsxWriter 
Searching for XlsxWriter 
Best match: XlsxWriter 0.8.6 
Adding XlsxWriter 0.8.6 to easy-install.pth file 
 
Using c:\python27\lib\site-packages 
Processing dependencies for XlsxWriter 
Finished processing dependencies for XlsxWriter 

C:\Users\Administrator>python 
Python 2.7.11 (v2.7.11:6d1b6a68f775, Dec 5 2015, 20:40:30) [MSC v.1500 64 bit (AMD64)] on win32 
Type "help", "copyright", "credits" or "license" for more information. 
> import xlsxwriter 
>