[Python-ideas] Variable-length, homogeneous tuple: why?

[Jukka Lehtosalo]

On Sun, Aug 17, 2014 at 11:19 PM, Greg Ewing <greg.ewing at canterbury.ac.nz>
wrote:

> Andrew Barnert wrote:
>
>> First, that's how the current typing.py interprets it: Tuple[str] is a
>> homogeneous, arbitrary-length (although of course unchanging, because it's
>> immutable) tuple of strings.
>>
>
> So how do you spell a heterogeneous tuple of length 1
> containing a string?
>

Tuple[str] :-)

The only arbitrary-length tuple that mypy knows about is just 'tuple' and
it isn't generic or necessarily homogeneous (it's dynamically typed,
basically a catch-all for a completely arbitrary tuple). However,
arbitrary-length, homogeneous tuples would be a nice addition, once we
figure out how the type should be named.

Jukka


>
> --
> Greg
>
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