adafruit/Adafruit-Raspberry-Pi-Python-Code — pull request #13 by rogg (2012-12-02 13:11:10+00:00)
Title: Update Adafruit_CharLCD/Adafruit_CharLCD.py

In delayMicroseconds(), it's always sleep(0) in Python 2.x (get a lot of weird characters on LCD)

This is because x / y returns an integer, not a float in Python 2.x
changed to: seconds = microseconds / float(1000000)