[Tutor] need help with 3.1's fraction module

[bob gailer]

Richard D. Moores wrote:
>>>> from fractions import Fraction
>>>> Fraction('.83452345').limit_denominator(100)
>>>>         
> Fraction(81, 97)
>
> I'd like to know how to do that in a script, where numbers like
> .83452345 are the output of random.random().
>   
>>>> Fraction(random()).limit_denominator(100)
>>>>         
>
> Doesn't work, nor did I really expect it to:
>   
>>>> Fraction(random()).limit_denominator(100)
>>>>         
> Traceback (most recent call last):
>   File "C:\Program Files (x86)\Wing IDE
> 3.2\src\debug\tserver\_sandbox.py", line 1, in <module>
>     # Used internally for debug sandbox under external interpreter
>   File "C:\Python31\Lib\fractions.py", line 100, in __new__
>     raise TypeError("argument should be a string "
> builtins.TypeError: argument should be a string or a Rational instance
>   
>
> But what does work?
>   

Fraction(str(random())).limit_denominator(100)



-- 
Bob Gailer
Chapel Hill NC
919-636-4239