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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 encode(self):
 """This method encodes the data into a binary string using the appropriate algorithm specified by the mode. """

        if self.mode == tables.modes['alphanumeric']:
            encoded = self.encode_alphanumeric()
        elif self.mode == tables.modes['numeric']:
            encoded = self.encode_numeric()
        elif self.mode == tables.modes['binary']:
            encoded = self.encode_bytes()
        elif self.mode == tables.modes['kanji']:
            encoded = self.encode_kanji()
        return encoded