On Tue, 21 Jun 2022 at 06:16, Leo wrote:
>
> On Wed, 15 Jun 2022 04:47:31 +1000, Chris Angelico wrote:
>
> > Don't bother with a main() function unless you actually need to be
> > able to use it as a function. Most of the time, it's simplest to
> > just have the code you want, right there in the f
On Wed, 15 Jun 2022 04:47:31 +1000, Chris Angelico wrote:
> Don't bother with a main() function unless you actually need to be
> able to use it as a function. Most of the time, it's simplest to
> just have the code you want, right there in the file. :) Python
> isn't C or Java, and code doesn't ha
On 15Jun2022 05:49, Chris Angelico wrote:
>On Wed, 15 Jun 2022 at 05:45, Roel Schroeven wrote:
>> Not (necessarily) a main function, but these days the general
>> recommendation seems to be to use the "if __name__ == '__main__':"
>> construct, so that the file can be used as a module as well as a
On 15/06/22 7:49 am, Chris Angelico wrote:
If it does need to be used as a module as well as a script, sure. But
(a) not everything does, and (b) even then, you don't need a main()
I think this is very much a matter of taste. Personally I find it tidier
to put the top level code in a function,
On Wed, 15 Jun 2022 at 05:45, Roel Schroeven wrote:
>
> Chris Angelico schreef op 14/06/2022 om 20:47:
> > > def main():
> > > for each in (iterEmpty, iter1, iter2, iterMany):
> > > baseIterator = each()
> > > chopFirst = mapFirst(baseIterator, lambda x: x[1:-1])
> > >
Chris Angelico schreef op 14/06/2022 om 20:47:
> def main():
> for each in (iterEmpty, iter1, iter2, iterMany):
> baseIterator = each()
> chopFirst = mapFirst(baseIterator, lambda x: x[1:-1])
> andCapLast = mapLast(chopFirst, lambda x: x.upper())
> print(repr("
On Wed, 15 Jun 2022 at 04:07, Travis Griggs wrote:
> def mapFirst(stream, transform):
> try:
> first = next(stream)
> except StopIteration:
> return
> yield transform(first)
> yield from stream
Small suggestion: Begin with this:
stream = iter(stream)
That way, yo
I want to be able to apply different transformations to the first and last
elements of an arbitrary sized finite iterator in python3. It's a custom
iterator so does not have _reversed_. If the first and last elements are the
same (e.g. size 1), it should apply both transforms to the same element
