Python code: brief

[KK CHN]

List ,

I have come across a difficulty to understand the code in this file.  I am
unable to understand exactly what the code snippet is doing here.

https://raw.githubusercontent.com/CODARcode/MDTrAnal/master/lib/codar/oas/MDTrSampler.py

I am new to this type of scientific computing code snippets and it is coded
by someone.  Due to a requirement I would like to understand what these
lines of code will do exactly.  If someone  could explain to me what the
code snippets do in the code blocks, it will be a great help .

Thanks in advance
Krish