what is the def statement in python code example

Example 1: how to define function in python

def example():			#This defines it
  print("Example.")		#This is the defined commands

example()				#And this is the commands being run

Example 2: function in function python

def function1(): # outer function
    print ("Hello from outer function")
    def function2(): # inner function
        print ("Hello from inner function")
    function2()

function1()