at does this variable represents ?
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uot;l = []" "(l or [None]).pop()"
> 100 loops, best of 3: 0.421 usec per loop
>
>
>
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> Steve
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ad of just letting f expire. There IS a language
> spec, and pretending there isn't one doesn't change that.
>
> ChrisA
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gt; And that part of your proposal has not generated much controversy.
>> Maybe if you proposed only that, you might get that change made? I
>> haven't considered the ramifications of that because the discussions
>> about -1 are obscuring it, but it might be relatively u
ctions, I should
import a specific math library whose specific job is to get this right (the
same way if you want to do matrix stuff you have to import numpy).
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hat's what my prototype does if you pass a Mapping in (or use
> .update() )
>
> why not?
>
> -CHB
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> Christopher Barker, Ph.D.
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CHB semantics and syntax for the groupper object
does everything that is needed, and even a little bit too much.
It could be called AppendDict and just accept a (key, value) interable in
input, and instead of doing dict[key] = value as a dict does, does
dict[key] = [value] if key not in dict else dic
'))
>grouping(transactions, key=lambda v: 'debit' if v > 0 else 'credit')
grouping(('debit' if v > 0 else 'credit', transaction_amount for
transaction_amount in transactions))
The code is slightly more verbose, but it is akin to filter(iterable
ax of the kind
>grouping((food_type, food_name for food_type, food_name in foods))
which is pretty nice to have.
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Nicolas Rolin
2018-07-02 9:43 GMT+02:00 Michael Selik :
> I made some heavy revisions to the PEP. Linking again for convenience.
> https://github.com/selik/peps/blob/m
he
final object" property.
But it doesn't requires me to defines 2 lambda functions just to do the job
of a comprehension.
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Nicolas Rolin
2018-06-29 4:57 GMT+02:00 Michael Selik :
> On Thu, Jun 28, 2018, 6:46 PM Nicolas Rolin
> wrote:
>
>> The questions I should have
yntax that is not too
confusing ?
My personal answer would be respectively "yes" and "maybe I don't know".
I was hoping to have some views on the topic, and it seemed to have a bit
sidetracked :)
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-357.0, -9.99, -15.6, 4320.0, -1200.0]
splited_bank_transactions = {group_by('credit' if amount > 0 else
'debit'): amount for amount in bank_transactions}
print(splited_bank_transactions)
{'credit': [200.0, 4320.0], 'debit': [-357.0, -9.99, -15.6, -1200.0]}
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