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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 get_pin_tries(self):
 """ Returns the number of PIN retries left, 0 PIN authentication blocked. Note that 15 is the highest value that will be returned even if remaining tries is higher. """

        # Verify without PIN gives number of tries left.
        _, sw = self.send_cmd(INS.VERIFY, 0, PIN, check=None)
        return tries_left(sw, self.version)