Where is Python language used?
Python is used for developing sites. It's more highlevel than php.
Python is used for linux dekstop applications. For example, the most of Ubuntu configurations utilites are pythonic.
I am a web developer and usually use PHP, JavaScript or MySQL.
I have heard lot about Python. But I have no idea where it is used and why it is used.
Just like  PHP, ASP, ColdFusion, .NET are used to build websites, and 
C, C++, Java are used to build software or desktop apps.
Where does Python fit in this?
What can Python do that these other languages cannot do?