[Python-ideas] π = math.pi

[Ivan Levkivskyi]

On 3 June 2017 at 21:55, MRAB <python at mrabarnett.plus.com> wrote:

> [...]
>>
>
> Interestingly, '_' doesn't have that property, although Python does allow
> identifiers to start with it.


Yes, it is special cased:

    if (!_PyUnicode_IsXidStart(first) && first != 0x5F /* LOW LINE */)
        return 0;

--
Ivan
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