debian@bbb1:~$ python temperature_displaying.py
Traceback (most recent call last):
  File "temperature_displaying.py", line 6, in <module>
    segment= SevenSegment.SevenSegment()
  File "/usr/local/lib/python2.7/dist-packages/Adafruit_LED_Backpack-1.8.1-py2.7.egg/Adafruit_LED_Backpack/SevenSegment.py", line 76, in __init__
    super(SevenSegment, self).__init__(**kwargs)
  File "/usr/local/lib/python2.7/dist-packages/Adafruit_LED_Backpack-1.8.1-py2.7.egg/Adafruit_LED_Backpack/HT16K33.py", line 45, in __init__
    import Adafruit_GPIO.I2C as I2C
ImportError: No module named Adafruit_GPIO.I2C