how do i call a function in pyhon code example

Example 1: how to make a function in python

def test_function(argument1,argument2,argument3) :
  # Do something with the code, and the arguments.
  print(argument1)
  print(argument2)
  print(argument3)
  
# Calling the function.

test_function('Hello','World','!')

# Output
'''
Hello
World
!
'''

Example 2: how to define functions in python

def add(number):
  equation = 5 + number
  print(equation)
  
 
add(10)

output:
  
  15