On 8/9/2017 9:25 AM, Marko Rauhamaa wrote:
> r...@zedat.fu-berlin.de (Stefan Ram):
>> Steve D'Aprano <steve+pyt...@pearwood.info> writes:
>>> There's a word for frozen list: "tuple".
>> Yes, but one should not forget that a tuple
>> can contain mutable entries (such as lists).
> Not when used as keys:
> >>> hash((, ))
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> TypeError: unhashable type: 'list'
Hence the word 'can' and not 'will' or 'must' or 'shall' ...
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