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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 feed(self, token, test_newline=True):
 """Consume a token and calculate the new line & column. As an optional optimization, set test_newline=False is token doesn't contain a newline. """

        if test_newline:
            newlines = token.count(self.newline_char)
            if newlines:
                self.line += newlines
                self.line_start_pos = self.char_pos + token.rindex(self.newline_char) + 1

        self.char_pos += len(token)
        self.column = self.char_pos - self.line_start_pos + 1