we write a return statement in a function to leave a function and give the calculated value when a defined function is called.
Syntax:
return < expression to be returned as output >
An argument, a statement, or a value can be used in the return statement, which is given as output when a specific task or function is completed. If we do not write a return statement, then None object is returned by a defined function.
Code:
# Python code to demonstrate the use of return statements
# Defining a function with return statement
def square( num ):
return num**2
# Calling function and passing arguments.
print( "With return statement" )
print( square( 39 ) )
# Defining a function without return statement
def square( num ):
num**2
# Calling function and passing arguments.
print( "Without return statement" )
print( square( 39 ) )
Output:
With return statement
1521
Without return statement
None
