Functions in Python basics

Functions In python:

• Set of instructions to perform a specific task.
• Below is the syntax of functions in python:

                   def function_name([arg1,....,arg n]):

                          statement 1

                          ........

                          statement n

                          [return value]

                   variable = function_name([value1,......,value n])

Example:

                   def Sum(a,b):

                          result = a+b

                          return result

                   answer = Sum(5,2)

                   print(answer) 

• where:

• def Sum(a,b) - Function signature

• Sum - Function name

• a,b -Function parameters: takes values from passed from the function call. also called Formal arguments.

• result = a+b - Function body / Statements inside the function.

• return result - Returns the result to the calling block.

• answer - Assigning the return value to a variable

• Sum(5,2) - Function call

• 5,2 - values passed to the function. known as actual arguments.