Functions · Lesson 12 of 25

Parameters and scope

Defaults, keyword arguments and local variables.

8 minutes2 games

Pass arguments by position or by name. Defaults apply when an argument is omitted. A variable assigned inside a function is local; prefer arguments and return values over shared global state.

Python

tax = 0.1

def total(price, qty=1):
    subtotal = price * qty
    return subtotal

print(total(50))
print(total(qty=3, price=50))
print(tax)

Tool	Use
`total(50)`	qty defaults to 1
`total(50, 3)`	Positional arguments
`total(qty=3, price=50)`	Keyword arguments

What's the output?

def greet(name="friend"):
    return f"Hi {name}"
print(greet())

What will this code print?

Exercise

Define discount(price, percent=10) returning the discounted price. Print discount(200).

Expected output: 180.0

Python

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Python

Functions · Lesson 12 of 25

Parameters and scope

Defaults, keyword arguments and local variables.

8 minutes2 games

Pass arguments by position or by name. Defaults apply when an argument is omitted. A variable assigned inside a function is local; prefer arguments and return values over shared global state.

Python

tax = 0.1

def total(price, qty=1):
    subtotal = price * qty
    return subtotal

print(total(50))
print(total(qty=3, price=50))
print(tax)

Tool	Use
`total(50)`	qty defaults to 1
`total(50, 3)`	Positional arguments
`total(qty=3, price=50)`	Keyword arguments

What's the output?

def greet(name="friend"):
    return f"Hi {name}"
print(greet())

What will this code print?

Exercise

Define discount(price, percent=10) returning the discounted price. Print discount(200).

Expected output: 180.0

Python

Learn more from

Played 0 of 2 games