this is what Sensirion says about the interface :
quote
The serial interface of the SHT7x is optimized for sensor
readout and effective power consumption. The sensor
cannot be addressed by I2C protocol, however, the sensor
can be connected to an I2C bus without interference with
other devices connected to the bus. Microcontroller must
switch between protocols.
unquote.

I would like to see the complete program too. I have one working here since about 2011 and I am interested if something new is available .
Thanks
Ambrogio