Functions — Part 2: Arguments, Return Values, Flow of Execution and Scope: visual lesson, CBSE Class 12 Computer Science

Lesson

Arguments, scope and flow

Part 2 — how values go into a function, how several values come out, and which names a function can see.

In this lesson you will

Part 2 at a glance

Concept

Table distinguishing parameters, the names in the def header such as days and rate, from arguments, the values in the call such as 4 and 60
Term	Also called	Where	Example
Parameter	formal parameter	in the `def` header	`days`, `rate` in `def fee(days, rate):`
Argument	actual parameter	in the call	`4`, `60` in `fee(4, 60)`

Concept

def ticket(age, fare=120):
    if age < 12:
        fare = fare // 2
    return fare