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Exercise 4

Refactor this code to use a regular if statement instead.

def baz():
    return ('bar' if foo() else qux())

Solution

def baz():
    if foo():
        return 'bar'
    else:
        return qux()

Ternaries are most useful when both result values are given by simple expressions; anything more complicated than calling a function or accessing a variable or literal value can lead to unreadable code. Our original code is an excellent example of using the ternary expression; the refactoring merely demonstrates how the ternary works.

Video Walkthrough

Errata: the video does not show this code using the baz function; the return statement is given as a bare statement, which is syntactically invalid outside of a function.

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