It is worth to look at the following topic:
viewtopic.php?f=28&t=134270
especially page 2, where fabio post example code in python

Colleagues,
I am using a code from fabio.
It works ok, but I have another issue:
I setting up a sampling rate to 500, but it seems that delta between the datapoints is not constant.
Most of the times it is a bit higher than 0.02 secs ( that is supposed to be in case of 500 Hz)
Any suggestions?

Novitsky, Can you please share your modified code and advise how I can change sample code? I am connecting Waveshare's temperature-humidity sensor to the AD2 input of ADC, and want to: 1. Point code for gettign data from AD2 2. Modify the sampling rate 3. Modify the sensitivity of ADC to 24 bits 4. ...