Using structure module in Python What does ">ll" mean?!

First of all, you need to know why you use the structure.

Looking at the help

This module performs conversions between Python values and C structs represented as Python bytes objects.

It is said to perform a transformation between the Python and the structure of c.

In c, a structure is a kind of framework, and if you put a memory address into a structure, you can use it as a lump from the address to the size of the structure. (It's hard to write it easily and briefly.)

In other words, the structure module is used when dealing with binaries in Python.

> The symbol is Big Endian
l is unsigned int.

If it's Big Endian...The representative cpu is RISC series such as ARM and power cpu.

Intel IA-32 and others are Little Endians.

If you don't know Endian...Please refer to other books. That's too far from the question.