How to get the minimum number that can be represented?

[Peng Yu]

On Sun, Sep 20, 2009 at 9:37 AM, Grant Edwards <invalid at invalid.invalid> wrote:
> On 2009-09-20, Peng Yu <pengyu.ut at gmail.com> wrote:
>
>> Suppose I want to define a function that return the minimum number
>> that can be represented.
>>
>> def f(x):
>>   #body
>>
>> That it, if I call f(10), f will return the minimum integer that can
>> be represented in the machine; if I cal f(10.5), f will return the
>> minimum float that can be represented in the machine.
>>
>> Could somebody let me know what should be in the function body?
>
> The stuff you wan is in the "sys" module.
>
> For example:
>
>>>> sys.float_info
> sys.floatinfo(max=1.7976931348623157e+308, max_exp=1024,
> max_10_exp=308, min=2.2250738585072014e-308, min_exp=-1021,
> min_10_exp=-307, dig=15, mant_dig=53, epsilon=2.2204460492503131e-16, radix=2, rounds=1)
>
>>>> sys.maxint
> 2147483647
>
> You might also want to read up on the type() builtin

I want avoid using any 'if' statement. In C++, I can use template. How
to do not use 'if' statement in python?

Regards,
Peng