[web2py] how to upload csv data and then use the data for calculation

I am a nood in coding and web development. I want to use web2py to establish a small APP for my research. But I have some problems to import the csv data and then use the data for calculation (or model establishment). I search for some examples in manual book, web2pyslices.com and some other we

[web2py] how to import csv data and use the imported data

I am phD students in Hiroshima University, Japan. I try to use web2py to establish an app for my research about environment management of the Seto Inland Sea,Japan. In the app, users upload their csv data, and will get the results here is my controller file and view file #controller data.py def