How a Function Call Becomes Its Value: Parameters vs. Arguments

Why does calling is_even(3) show nothing until you print it — and how does the call vanish and leave its return value behind, like 3+2 becomes 5?

Finger exercises

Short drills on what this video just taught. Write the code, run the checks, and reveal the answer only if you are stuck.

0 / 5 passed

Exercise 1 of 5

The call becomes its value

Read this code and trace it by hand — do not run it:

def is_positive(n):
    return n > 0

is_positive(-5)

When Python reaches is_positive(-5), it runs the body and the whole call is replaced by a single True/False value. Assign that value to call_value (a real boolean, not the string "False").

call_value = ...  # your code here — the value the call becomes

call_value = ...  # your code here — the value the call becomes

Python runs in your browser

⌘/Ctrl + Enter runs

is a real True/False value, not text

is the value is_positive(-5) becomes

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