[Pymoney-general] An attempt of implementation.

[Darek S. <ds...@us...>]

Hi,
I'm sending two files, which are an attempt to implement my current
understanding of the PEP. They're not finished (Currency.distrib
and DefaultContext.distrib methods are still to be written, I also need
to add more tests) and I'm not really sure that all of those

if context is None:
    context = getcontext()

checks in almost all of Currency methods are needed, but the PEP clearly
says that "Definitely the idea is not to get a context per Currency value.".

Hm, I'm not sure, perhaps changing it to something like

def __add__(self, other, context=None):
  """ Returns self + other.
  """
  result = Currency(Decimal.__add__(self,other,context or getcontext()))
  return context._round_to_dec_quant(result)

would be better?

I haven't also touched ISO-4217 and/or ISO-3166 tables at all, because
it's still unclear how should they look like.

I'm not an threading guy, so getcontext() and setcontext() methods
should be taken special care of (though I simply copy&pasted them
from decimal module).

Anyway, it's an attempt, I hope it will be useful, but feel free to
tell me it's a crappy code :-)

darek

PS. I'm not submitting it to the sf.net patch tracker, should I?