This code is old and obsolete, you should use the Adafruit code from here: https://github.com/adafruit/Adafruit_Python_ADXL345
Raspberry Pi Python i2c library for the ADXL3453-axis MEMS accelerometer IC which is used in breakout boards like the Adafruit ADXL345 Triple-Axis Accelerometer (http://shop.pimoroni.com/products/adafruit-triple-axis-accelerometer).
This library is a basic implementation of the i2c protocol for the IC offering a simple way to get started with it on the Raspberry Pi.
You can import the module and get a sensor reading like this:
from adxl345 import ADXL345 adxl345 = ADXL345() axes = adxl345.getAxes(True) print "ADXL345 on address 0x%x:" % (adxl345.address) print " x = %.3fG" % ( axes['x'] ) print " y = %.3fG" % ( axes['y'] ) print " z = %.3fG" % ( axes['z'] )
or you can run it directly from the command line like this:
sudo python ADXL345.py
which will output the current x, y, and z axis readings in Gs.