Remove Parts of a String

[Dean Stackhouse]

Hello,

I'm quite new to python and am attempting to do some coding on a Raspberry Pi.

I have a sensor that gives an output in the following format.

628.6,339,0.30,1.000


I need to splice it so it just gives me the 628.6

The string isn't always the same length so i need to chop it on the first comma.

I also need to change the decimal point so it looks like this but that should be easy enough once its just a number.

6.286

Thanks