variable naming...

[Courageous]

>and so on. I presume this is not reccommended in Python?

No. 

>Is there an "official" or "semi-official" style, ...

Erm. Well, sort of. Internally, Python .c code seems to use
all_lower_case for helper functions, and MixedCase for functions
intended to be bound for external publish. However, the very
same functions will be bound into python using lower_case.

The few python modules which present MixedCase interfaces
are aberrant, IMO.

C//