I am new to python. I have installed both version python 3.3.2 and 2.7.5 (Windows 7)
python 3.3 directory : c:\python33
python 2.7 directory : c:\python27
python33 was installed first.
What will be first line of code for both version of python? like as #! /user/bin/python ??? more importantly why this line is important ?