Python- Function (Parameter, Argument and Return)

PARAMETER,

ARGUMENT AND

RETURN

PARAMETER

IN PYTHON FUNCTION

Parameters

■ A parameter is the variable listed inside

the parentheses in the function definition.

■ Here, a and b is the function parameter.

Default Parameter
■ A default parameter is set when the default

value is already assigned when defining a
function.

Output

ARGUMENT

IN PYTHON FUNCTION

Arguments

■ Arguments are specified after the

function name, inside the parentheses.

When we call the function, the value passed
(10 & 20) to the parentheses is called the
function’s arguments.

}

The number 10 and 20 will be passed to a and b in
the function parameter respectively.
And later it was passed to the function body/
statement.

Parameter Vs Argument

➢ Parameter is the variable you give to function

when you define the function.

➢ When the function is called the argument(s)

are the data you pass into the function
parameter.

➢ Argument is the actual value of the variable

that gets passed to the function.

​Quiz Time.

Get ready

Multiple Choice

Parameter is the variable you give to function.

• True

• False

• None of the above.

Multiple Choice

How many parameters can we use in each function?

• 1

• 2

• 5

• As many as we need

Multiple Choice

What is the correct way to create a function in Python?

• def myFunction():

• function myFunction():

• Create myFunction():

• DEF myFunction():

RETURN

IN PYTHON FUNCTION

o Return statement is used to end the

execution of the function call and returns
the result.

o The statement after the return statement

is not executed.

o Return statement can not be used outside

the function.

Return statement

Example

Output

Output

Activity

■ 1. Write a python code to find
Area of a Rectangle using function and passing
parameter and argument.

■ 2. Write a python code to find
Area of a Square using function and passing
parameter and argument.