[Python-ideas] Statements vs Expressions... why?
josiah.carlson at gmail.com
Sun Sep 14 21:36:17 CEST 2008
On Sun, Sep 14, 2008 at 11:28 AM, Arnaud Delobelle
<arnodel at googlemail.com> wrote:
> On 14 Sep 2008, at 10:25, Cliff Wells wrote:
>>> Now say you want to write that inline with a for-expression:
>>> for J in I:
>>> for j in J:
>>> YIELD j
>>> That won't work because the j's will be accumulated in the inner loop
>>> and the outer loop won't accumulate anything, therefore returning an
>>> empty iterable.
>> How about this way instead (since for-loop is now an expression):
>> for j in ( for J in I: YIELD J ): YIELD j
> After you've had a good night's sleep and when you look at this again,
> you'll definitely think that you were too hasty in replying :)
Agreed. For all of the semantic and syntactic gymnastics and
discussion about how statements -> expressions would make Python a
better language, all I can conclude from the above is "I'm glad Python
doesn't do that."
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