How to correctly read data from a file?

Question

Python

Hello dear community.
The question is next.
The Delphi program writes entries to the file. This is done with the following function:

BlockWrite(FT, Map.zmatrix[i][Map.startx], Map.width, bytes)

;
How to correctly read data with a python script?
I have no experience in Delphi, not in Python, if I asked the question incorrectly, please correct me.

Answer 1

0) know the format
1) open the file for reading
2) parse the format