def environment_variable_should_not_be_set(self, name, msg=None):
        """Fails if the specified environment variable is set.

        The default error message can be overridden with the `msg` argument.
        """
        value = get_env_var(name)
        if value:
            self._fail(msg, "Environment variable '%s' is set to '%s'" % (name, value))
        self._info(name % "Environment variable '%s' is not set")
dataset/ETHPy150Open shellderp/sublime-robot-plugin/lib/robot/libraries/OperatingSystem.py/OperatingSystem.environment_variable_should_not_be_set/swapped operands of `%`