James Thiele wrote:
> In the section "Explicit Conversion Flag" of PEP 3101 it says:
>
> Currently, two explicit conversion flags are recognized:
>
> !r - convert the value to a string using repr().
> !s - convert the value to a string using str().
> --
> It does not say what action is taken if an unrecognized explicit
> conversion flag is found.
My implementation raises a ValueError, which I think is the desired
behavior:
>>> "{0!x}".format(1)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ValueError: Unknown converion specifier x
I agree the PEP should be explicit about this.
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