What is function in python?

A function is a block code that takes in some data and either performs some kind of transformation and returns the transformed data or performs some task on data or both.

Parts of function:-

• Keyword def()- This is the keyword used to say that a function will be defined now.
• Function name- This is the name that is used to identify the function. The function name comes after the def keyword.
• Parameter list- Parameter list are placeholders that define the parameters that go into the function. In python, parameters are enclosed in parentheses
• Function docstring- These are optional constructs that provide a convenient way for associated documentation to the corresponding function. Docstrings are enclosed by triple quotes.
• Function returns- Python function return a value.

syntax:-

def name_of_function(arguments):
   """docstring"""
   body of function
   return the value of function

Indentation is very important part of function in python.

e.g.,

def hello_world():
    print("Hello, World!)
hello_world():