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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def cannot_convert(self, node, reason=None):
 """Warn the user that a given chunk of code is not valid Python 3, but that it cannot be converted automatically. First argument is the top-level node for the code in question. Optional second argument is why it can't be converted. """

        lineno = node.get_lineno()
        for_output = node.clone()
        for_output.prefix = u""
        msg = "Line %d: could not convert: %s"
        self.log_message(msg % (lineno, for_output))
        if reason:
            self.log_message(reason)