> Of course, this won’t be anywhere near as efficient as just implementing the decoder in C > It is quite easy to add new built-in modules to Python, if you kn

> Of course, this won’t be anywhere near as efficient as just implementing the decoder in C > It is quite easy to add new built-in modules to Python, if you know how to program in C. Such extension modules can do two things that can’t be done directly in Python: they can implement new built-in object types, and they can call C library functions and system calls. Then why are you talking about this instead of extension modules?