cmd prompt does not recognizes python command on Windows 7

[sh.ajay12 at gmail.com]

Hi Everyone

i have installed python 3.5 , but the python command is not recognized  

C:\Users\sharmaaj>python
'python' is not recognized as an internal or external command,
operable program or batch file.

what should i do to run python commands. 

thanks everyone for reading my post. 

>From Ajay