Floating point -> string conversions

[Steve Holden]

John Fouhy wrote:

> I have another related question...
> 
> 
>>>>pow(2, 31)
> 
> 2147483648L
> 
>>>>'%d' % 2147483647.0              # python will convert to int
> 
> '2147483647'
> 
>>>>'%d' % 2147483648.0              # too big for an int, so error.
> 
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> TypeError: int argument required
> 
>>>>'%d' % long(2147483648.0)        # but yet, no trouble accepting a long.
> 
> '2147483648'
> 
>>>>'%d' % int(2147483648.0)         # and int() converts to long anyway
> 
> '2147483648'
> 
> Is this a bug? 
> 
> (python 2.3.4)
> 
I don't think so. The fact of the matter is that a %d format token 
explicitly expects an integral value.

The fact that %s coerces things makes us expect more of other format 
tokens, but what would you expect %d to do with 2147483648.5?

regards
  Steve
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