On Fri, 7 Oct 2016 11:48 pm, jmp wrote:
> On 10/07/2016 02:07 PM, ast wrote:
>> It can be used to store some variables from one call of
>> a function to an other one.
>>
>> def test( _store={'x':0}):
>>
>> x = _store['x']
>> ..... do some stuff
>> _store['x'] = x
>
> For personal dirty scripts, possibly, for all other situations, never.
> Especially since there's nothing in the code above that cannot be solved
> using standard idioms .
Using a default list as static storage *is* a standard idiom.
> That is if you care about anyone reading your code ;)
Here's another example of a mutable default argument:
https://www.python.org/doc/essays/graphs/
Although it isn't actually being mutated. Nevertheless, if it is good enough
for Guido, then it should be good enough for anyone.
--
Steve
“Cheer up,” they said, “things could be worse.” So I cheered up, and sure
enough, things got worse.
--
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