'python' is not recognized as an internal or external command [duplicate]

So I have recently installed Python Version 2.7.5 and I have made a little loop thing with it but the problem is, when I go to cmd and type python testloop.py I get the error:

'python' is not recognized as an internal or external command

I have tried setting the path but no avail.

Here is my path:

C:\Program Files\Python27

As you can see, this is where my Python is installed. I don't know what else to do. Can someone help?

Solution 1:

Try "py" instead of "python" from command line:

C:\Users\Cpsa>py
Python 3.4.1 (v3.4.1:c0e311e010fc, May 18 2014, 10:38:22) [MSC v.1600 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>>

Solution 2:

I have found the answer... click on the installer and check the box "Add python to environment variables" DO NOT uninstall the old one rather click on modify....Click on link for picture...