#!/usr/bin/env python3
# demonstrates of functions

# This is global variable.
total = 0

# Function definition is here
def sum( num1, num2 ):
   # Add both the parameters and return them."
   total = num1 + num2; # Here total is local variable.
#   print ("Inside the function local total")
   print ("The sum of {:.2f} and {:.2f} is {:.2f}".format(num1,num2,total))
   return total

# Now you can call sum function
#sum( 10, 20 )
#Output
#The sum of 10.00 and 20.00 is 30.00

#print ("Outside the function global total : ", total )
#Output
#Outside the function global total :  0