code: def begin(self, address=MPR121_I2CADDR_DEFAULT, i2c=None, **kwargs):
                  
          # Assume we're using platform's default I2C bus if none is specified.
          if i2c is None:
              import Adafruit_GPIO.I2C as I2C
              i2c = I2C
              # Require repeated start conditions for I2C register reads.  Unfortunately
              # the MPR121 is very sensitive and requires repeated starts to read all
              # the registers.
              I2C.require_repeated_start()
          # Save a reference to the I2C device instance for later communication.
          self._device = i2c.get_i2c_device(address, **kwargs)
          return self._reset()
docs: Initialize communication with the MPR121. 
  
          Can specify a custom I2C address for the device using the address 
          parameter (defaults to 0x5A). Optional i2c parameter allows specifying a 
          custom I2C bus source (defaults to platform's I2C bus).
  
          Returns True if communication with the MPR121 was established, otherwise
          returns False.