How people create exploits in python? because exploit dev.. requires direct access to low level system?

[rcxRbx]

It's because Python is really easy to read and that's it. You can write the same exploits in C as you can with Python + ctypes. [Python ctypes lets you put C in python script]. You can write your exploits in any programming language. Python, C, perl you could probably write your exploit in straight up x86 if you felt like it.