Why does python use two underscores for certain things?

Question

I\'m fairly new to actual programming languages, and Python is my first one. I know my way around Linux a bit, enough to get a summer job with it (I\'m still in high school)

Answer 1

Here is the creator of Python explaining it:

... rather than devising a new syntax for special kinds of class methods (such as initializers and destructors), I decided that these features could be handled by simply requiring the user to implement methods with special names such as __init__, __del__, and so forth. This naming convention was taken from C where identifiers starting with underscores are reserved by the compiler and often have special meaning (e.g., macros such as __FILE__ in the C preprocessor).

...

I also used this technique to allow user classes to redefine the behavior of Python's operators. As previously noted, Python is implemented in C and uses tables of function pointers to implement various capabilities of built-in objects (e.g., “get attribute”, “add” and “call”). To allow these capabilities to be defined in user-defined classes, I mapped the various function pointers to special method names such as __getattr__, __add__, and __call__. There is a direct correspondence between these names and the tables of function pointers one has to define when implementing new Python objects in C.