Python - Function

Define Function in Python

Function is block of codes. Python provide built-in and user define both types of function.

• Built-in function
• User defined function

Built-in function

This type of functions are pre-defined, you can directly use in your program. For example printfunction is used for display message on screen or console.

Print hello world in python

a="Hello World!"  
print a  

User defined function

This type of functions are defined by programmer. According to your requirement you can defined you function name and it's functionality. In python you can define any function by using defkeyword.

Syntax for define function in python

def function_name(parameter)
function body

Define function in python

def my_function(fname):
  print(fname + " Refsnes")

my_function("Emil")
my_function("Tobias")
my_function("Linus")

Output

Emil Refsnes 

Tobias Refsnes 

Linus Refsnes

Explanation

• a variable store hello world string
• print statement is used for display message on screen or console.