Summary - Function parameters

Combine keyword and type hints to write a calculation function.

Summary - Function parameters

In this group we covered positional, keyword, keyword-only, positional-only and type hints.

Positional: matches by order.
Keyword: passed by name, order irrelevant.
Keyword-only: separated by *.
Positional-only: separated by /.
Type hint: type annotation, not enforced.

Now two tasks combine these concepts.

Exercise Type hint and keyword together

Define a function called greet with parameters name: str and greeting: str = "Hello", return type -> None. The body does print(greeting, name). Call it with the keyword call greet(name="Ayse").

Show example solution

def greet(name: str, greeting: str = "Hello") -> None:
    print(greeting, name)
greet(name="Ayse")

Exercise Keyword-only and type hint together

Define a function called create_user with name: str positional, then *, then role: str and active: bool keyword-only parameters, return type -> None. The body does print(name, role, active). Call it with create_user("Ayse", role="admin", active=True).

Show example solution

def create_user(name: str, *, role: str, active: bool) -> None:
    print(name, role, active)
create_user("Ayse", role="admin", active=True)

Test yourself

Which statement is correct?
- Type hints slow the code down
- Positional-only is separated by *
- Keyword depends on order
- Keyword-only is separated by *
Show answer

Keyword-only is separated by * — Parameters after the star are keyword-only.

Complete the positional-only call

result = compute(____, 4)

Show answer

result = compute(3, 4)

Next lesson: Task model

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