Give functions input.
Use arguments when calling.

A parameter is the name inside a function definition; an argument is the value supplied when the function is called.

01 Learn02 Try03 Predict

01 Learn

Parameters let one function work with different values.

A parameter is the name inside a function definition; an argument is the value supplied when the function is called.

def greet(name):
    print("Hello,", name)

greet("Ana")
greet("Marko")

name is a parameter. "Ana" and "Marko" are arguments passed into the same function.

Change one value or function call, then explain how the result changes.

↳

Keep this in mind: Read the function definition and its calls before predicting the result.

Try it

def greet(name):
    print("Hello,", name)

greet("Ana")
# Change an argument and add another call

Run the example, then change one value and observe the result.

02 Try

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03 Predict

What will this program print?

Read the function definition and each call before choosing an answer.

def introduce(name, city):
    print(name, "lives in", city)

introduce("Ana", "Novi Sad")

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04 Understanding Check

What will this program print, and how can the same function use different arguments?

def add_tax(price, rate=0.2):
    print(price + price * rate)

add_tax(100)
add_tax(100, 0.1)