consider-using-ternary.md

Pattern: Use of old ternary syntax

Issue: -

Description

Before Python 2.5, a common idiom for ternary was to use logical operators:

[expression] and [on_true] or [on_false]

However, this idiom is unsafe, as it can give wrong results when on_true has a false boolean value. Therefore, it is always better to use the ... if ... else ... form:

x, y = 50, 25
small = x if x < y else y

Further Reading

• Python Frequently Asked Questions - Is there an equivalent of C’s ”?:” ternary operator?