check if object is number

[Steven Bethard]

Fredrik Lundh wrote:
> Steven Bethard wrote:
> 
>>>Actually no, floats don't meet this behaviour or more specifically
>>>floats don't guarantee this behaviour. It depends of course on
>>>your implementation of f, but it is possible with floats to keep
>>>incrementing and never reach a maximum.
>>
>>My code won't hit this corner case.  I'm incrementing with integers.
> 
> 
> incrementing what with integers?
> 
>     >>> f = 9007199254740992.0
>     >>> f == f+1
>     True

I mean that the number that's being incremented is an integer:

py> f = 9007199254740992.0
py> i = 9007199254740991
py> i <= f
True
py> i += 1
py> i <= f
True
py> i += 1
py> i <= f
False

Steve