mapLast, mapFirst, and just general iterator questions

[Roel Schroeven]

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(" ".join(andCapLast)))
>
> 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 have to get wrapped up in functions in order to
> exist.
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 as a 
script. Even for short simple things that can be helpful when doing 
things like running tests or extracting docstrings.

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