Decimal vs Float comparasion

[Yuan HOng]

Hi,

It seems decimal object will always be larger than float in
comparasion, which goes against common sense:
True

It seems to me that rather than allowing this to happen, comparasion
between the two should either be made correct (by convertion decimal
to float e.g.) or forbidden, like arithmatic operations between the
two types.

--
Hong Yuan

´ó¹Ü¼ÒÍøÉϽ¨²Ä³¬ÊÐ
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http://www.homemaster.cn

 

[Gasto]

I still don't see why such a module exists.

Hi,

It seems decimal object will always be larger than float in
comparasion, which goes against common sense:


True

It seems to me that rather than allowing this to happen, comparasion
between the two should either be made correct (by convertion decimal
to float e.g.) or forbidden, like arithmatic operations between the
two types.

--
Hong Yuan

´ó¹Ü¼ÒÍøÉϽ¨²Ä³¬ÊÐ
×°ÐÞ×°ä꽨²Äһվʽ¹ºÎïhttp://www.homemaster.cn

 

[Marco Mariani]

I still don't see why such a module exists.

There are 2.0 types of programmers: those who always use floating point,
and those who know how to use them.

 

[Rhamphoryncus]

Why should decimal be coerced to float? Maybe float should be
coerced to decimal?

Or... the programmer should explicitly specify what comparison is
wanted -- if any...

Or... Isn't Python 3.x supposed to forbid mixed type comparisons
unless the types implement suitable handling?

Yes, it is fixed in 3.0. Unfortunately it's well established
behaviour in 2.x, so it won't be changing there. Don't bother
reporting a bug about this unless it's about 3.0.