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and-or-ternary (PLR1706)#

Derived from the Pylint linter.

Warning: This rule has been removed and its documentation is only available for historical reasons.


This rule was removed from Ruff because it was common for it to introduce behavioral changes. See #9007 for more information.

What it does#

Checks for uses of the known pre-Python 2.5 ternary syntax.

Why is this bad?#

Prior to the introduction of the if-expression (ternary) operator in Python 2.5, the only way to express a conditional expression was to use the and and or operators.

The if-expression construct is clearer and more explicit, and should be preferred over the use of and and or for ternary expressions.


x, y = 1, 2
maximum = x >= y and x or y

Use instead:

x, y = 1, 2
maximum = x if x >= y else y