Method evaluate

src/_pytest/mark/expression.py:340–353

Evaluate the match expression. :param matcher: A callback which determines whether an identifier matches or not. See the :class:`ExpressionMatcher` protocol for details and example. :returns: Whether the expression matches or not. :raises UsageError

(self, matcher: ExpressionMatcher)

        return Expression(input, code)

    def evaluate(self, matcher: ExpressionMatcher) -> bool:
        """Evaluate the match expression.

        :param matcher:
            A callback which determines whether an identifier matches or not.
            See the :class:`ExpressionMatcher` protocol for details and example.

        :returns: Whether the expression matches or not.

        :raises UsageError:
            If the matcher doesn't support the expression. Cannot happen if the
            matcher supports all expressions.
        """
        return bool(eval(self._code, {"__builtins__": {}}, MatcherAdapter(matcher)))