Pete Forman wrote:
> I'm holding off installing Python 2.6, waiting for some packages to
> become available for it. I wonder if someone could tell me the best
> way to avoid future problems parsing decimal integers with leading
> zeros.
You can have multiple versions of python simultaneously.
>>>> int('09')
> 9
This works for 2.x and 3.0.
2.6 will accept two prefixes "0o" and "0" when you give 0 as the radix
argument. 3.0 will only accept "0o" and raise a ValueError for "0". None of
this affects you.
> That works in 2.5 but will break in 2.6 AFAIK as int() is being
> changed to use Numeric Literal syntax. It will give a syntax error as
> the leading 0 will force an octal radix and the 9 will be out of
> range. Will this avoid the breakage?
>
>>>> int('09', 10)
> 9
That's unnecessary.
> Or should I use this uglier variation that needs 2.2.2 or later?
>
>>>> int('09'.lstrip('0'))
> 9
And that's cargo cult code.
> Is the documentation for int([x[, radix]]) correct?
Yes.
> I'd say that the default for radix has become 0.
You can say that, but you're wrong.
Peter
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