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Comments (2)

jacobtylerwalls avatar jacobtylerwalls commented on June 21, 2024

Agree we could extend the check to the last line of a (potentially nested) try/if/with

from pylint.

nickdrozd avatar nickdrozd commented on June 21, 2024

These are great examples.

For anyone who wants to fix this, the warning is raised from this function:

    def _check_return_at_the_end(self, node: nodes.FunctionDef) -> None:
        """Check for presence of a *single* return statement at the end of a
        function.

        "return" or "return None" are useless because None is the
        default return type if they are missing.

        NOTE: produces a message only if there is a single return statement
        in the function body. Otherwise _check_consistent_returns() is called!
        Per its implementation and PEP8 we can have a "return None" at the end
        of the function body if there are other return statements before that!
        """
        if len(self._return_nodes[node.name]) > 1:
            return
        if len(node.body) <= 1:
            return

        last = node.body[-1]
        if isinstance(last, nodes.Return):
            # e.g. "return"
            if last.value is None:
                self.add_message("useless-return", node=node)
            # return None"
            elif isinstance(last.value, nodes.Const) and (last.value.value is None):
                self.add_message("useless-return", node=node)

The docstring refers to another function, _check_consistent_returns. The logic there is murky.

from pylint.

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