Method __len__

tools/python-3.11.9-amd64/Lib/mailbox.py:1089–1091

Return a count of messages in the mailbox.

(self)

        return os.path.exists(os.path.join(self._path, str(key)))

    def __len__(self):
        """Return a count of messages in the mailbox."""
        return len(list(self.iterkeys()))

    def lock(self):
        """Lock the mailbox."""