About one class/function per module

[Robert Kern]

Peng Yu wrote:

> So far, I haven't find one. It seems impossible in python, but I want
> to double check if there is one solution.

We have already told you more than twice that the answer is "No." Please don't 
triple check.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco