Intro

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Your First Function

~6 mincode completion

A function is a named piece of code you can run whenever you want. You write it once and call it as many times as you like.

def shout(word):
    return word.upper() + "!"

shout("hello")     # "HELLO!"

Three things are happening there:

  • def shout(word): names the function and says it takes one input, called word.
  • The indented line below is the body. Python knows the body has ended when the indentation stops.
  • return sends a value back to whoever called the function. A function with no return gives back None.

    • f-strings are the normal way to build a string out of other values. Put an f before the quote and put any expression in { }:

    name = "Ada"
f"Hi {name}, you are {20 + 16}"    # "Hi Ada, you are 36"

    Your task:

    Write greet(name, age) that returns exactly this sentence:

    Hi NAME, you are AGE years old.

    So greet("Ada", 36) returns "Hi Ada, you are 36 years old."

    Example Tests

    greet("Ada", 36) builds the full sentence

    Input: {"age":36,"name":"Ada"}

    Expected: "Hi Ada, you are 36 years old."

    A different name and age produce a different sentence

    Input: {"age":45,"name":"Grace"}

    Expected: "Hi Grace, you are 45 years old."

    Python
    def greet(name, age):
    """
    Build a greeting sentence.

    Args:
        name: a string, e.g. "Ada"
        age: a whole number, e.g. 36

    Returns:
        A string like "Hi Ada, you are 36 years old."
    """
    # YOUR CODE HERE
    pass

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