Question

how to define function?

Answer 1

http://docs.python.org/tutorial/controlflow.html#defining-functions

you probably should start at the beginning of the tutorial first. The tutorial should also be installed on your computer.

Answer 2

I need some sort of easy 2 lines answer ..

Answer 3

def function(params):
statement1
. . .
statement(n)

Answer 4

Functions in Python are defined with the def statement, with no need to specify return type and no need to include a return statement within the function. In python, you follow the following syntax to define a function (remember the 4 spaces indent after pressing return when using the colon in Python, because Python cares about whitespace):

def myFunction(parameters):
dostuff()
domorestuff()
return something