code: def i2c_bitrate(self):
          
  
          ret = api.py_aa_i2c_bitrate(self.handle, 0)
          _raise_error_if_negative(ret)
          return ret
docs: I2C bitrate in kHz. Not every bitrate is supported by the host
          adapter. Therefore, the actual bitrate may be less than the value which
          is set.
  
          The power-on default value is 100 kHz.