Hi,
i wrote a hal component in python to control some I2C devices
* pcf8574 : Digital IO's
# ads1115 : Analog input
# lm75 : temperature sensor
# hd44780 : LCD display
It is actually part of the RIO project, but can also run independently.
Maybe someone can use it.
It's also no problem to install additional devices. Just let me know what you need; I have almost everything here