Unit 1 Path setting & Environment variable..

 System setting ->Environment Variable ->New

In Variable name write path and in Variable value copy path up to C://Python(i.e., path where Python is installed). Click Ok ->Ok.

Path will be set for executing Python programs.

1. Right click on My Computer and click on properties.

2. Click on Advanced System settings

3. Click on Environment Variable tab.

4. Click on new tab of user variables.

5. Write path in variable name

6. Copy the path of Python folder

7. Paste path of Python in variable value.

8. Click on Ok button:

9. Click on Ok button: