w+b ?

[alexzk1]

I'm trying to write normal C++ code implementing this idea.
So I found something weird into library used:

 with open(EC_IO_FILE,'w+b') as file:
        file.seek(BYTE)
        file.write(bytes((VALUE,)))

Are you sure it should be w+b ? Because

"w+"

Creates an empty file for both reading and writing.

So it should truncate content, then seek looks useless there.

[YoCodingMonster]

w+b for createing and writing the file
same as w+

[alexzk1]

w+b for createing and writing the file same as w+

Yes, that what I said. If you do that with normal file it will get 0 length. So following "seek" has no sense then. debug fs may ignore "truncate" request, but that does not cancel the fact code tries to do it. Looks like bug.