[Python-ideas] Default return values to int and float

[Laurens Van Houtven]

I don't think David is arguing for the default behavior to change -- merely that you get a dict.get style default. Kinda similar to getattr/2 raising AttributeError, and getattr/3 returning the default value.


cheers
lvh



On 03 Oct 2011, at 12:40, Greg Ewing wrote:

> David Townshend wrote:
>> My idea is fairly simple: add a "default" argument to int and float,
>> allowing a return value if the conversion fails.  E.g:
>>>>> float('cannot convert this', default=0.0)
> 
> I think I'd be more likely to want to report an error
> to the user than to blindly return a default value.
> 
> If I did want to do this, I'd be happy to write my
> own function for it.
> 
> It could even be made generic:
> 
>   def convert(text, func, default):
>      try:
>         return func(text)
>      except ValueError:
>         return default
> 
> -- 
> Greg
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