Python user defined function

user_defined_function.py

#Python user defined function - Syntax
"""
def function_name(parameters):
	'''doc string '''
	[Block statements]
	[return statement]
"""
  
#Example
x, y = 10, 30
#Python user defined function
def summation(x, y):
    ''' Summation of two numbers
    example: c = a + b '''
    z = x + y
    return z

#Function call
print("Sum of two numbers = ", summation(x, y))