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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 time_signature_event(self, meter=(4, 4)):
 """Return a time signature event for meter."""

        numer = a2b_hex('%02x' % meter[0])
        denom = a2b_hex('%02x' % int(log(meter[1], 2)))
        return self.delta_time + META_EVENT + TIME_SIGNATURE + '\x04' + numer\
             + denom + '\x18\x08'