224 – Clamp

You can write a function clamp, that clamps a value between two bounds, by combining the built-ins max and min. For example, to ensure a value is a valid percentage, you can write clamp_percentage:

def clamp_percentage(value):
    return min(max(value, 0), 100)

The call max(value, 0) ensures that the result is, at least, 0, and the call min(..., 100) ensures that the value is, at most, 100. Together, the two restrictions ensure that the value is a valid percentage.

For a more general function clamp, the lower and upper bounds can be passed in as function arguments.