how to declare and call a function in python code example

Example 1: python functions

def myFunction(say): #you can add variables to the function
  print(say)

myFunction("Hello")

age = input("How old are you?")

myFunction("You are {} years old!".format(age))

#this is what you get:

Hello
How old are you?
>>11 #lol my real age actually
You are 11 years old!

Example 2: functions in python

# Functions

""" All the functions are followed by the 'def' keyword in python"""

def Greet(User): # The arguments inside the brackets should be called or the function gives you an error
  print("Hello" + User + "!")
  
# Calling the function

Greet("Shivram")

# Output: 'Hello Shivram !'