code: def pulled_up(self, function):
          
          try:
              header, number = self.physical_pin(function)
          except PinNoPins:
              return False
          else:
              return self.headers[header].pins[number].pull_up
docs: Returns a bool indicating whether a physical pull-up is attached to
          the pin supporting the specified *function*. Either :exc:`PinNoPins`
          or :exc:`PinMultiplePins` may be raised if the function is not
          associated with a single pin.
  
          :param str function:
              The pin function you wish to determine pull-up for. Usually this is
              something like "GPIO9" for Broadcom GPIO pin 9.