No chatbot involved. I was typing this on my phone in bed last night and
didn't have a Python interpreter handy that I could verify this with. I
will certainly check this.
In any case, since verifying that a valid choice was made was made is done
in the same IF statement as the check for None, it seems to be a moot
point.
Calling lower() on None will cause an Exception so I would always recommend
making that check on any user input.
Yes, using casefold to deal with non-ascii characters is a good point. In
this case, we don't care what the input was if it's not one of the four
valid choices...we just treat it as invalid and prompt the player to enter
a valid choice.
On Thu, Dec 18, 2025, 8:21 AM Thomas Passin wrote:
> On 12/17/2025 10:43 PM, Gregg Drennan via Python-list wrote:
> > The other recommendation i would make is to shorten the response the
> player
> > needs to give when choosing their option. "R", "P", "S" is sufficient to
> > determine the player's choice. Making the player enter the whole word
> > introduces opportunity for misspellings. I would also allow the player
> to
> > enter "Q" in case they decide to stop playing. And always check to make
> > sure the player entered something and didn't just hit enter. Also don't
> > use .lower() until you check to make sure you have a valid entry, the
> > player might enter a character that can't be converted to lower case,
> like
> > a number or punctuation.
>
> See, here's the problem with relying on a chatbot. Calling lower() works
> fine for a character that doesn't have a lowerclass version. It just
> returns the original.
>
>
> > while True:
> > player_choice = input("Please enter your choice (Rock, Paper,
> Scissors,
> > or Quit): "
> > If not player_choice or player_choice[0] not in "RPSQrpsq": #
> check
> > if None or invalid choice
> > print("Invalid choice...")
> > else:
> > If player_choice[0].lower() == "q":
> > print("Thanks for playing. Good-bye.")
> > break
> > # code to score the choices, blah, blah, blah
> >
> > Good luck with your new version!
> >
> > On Mon, Dec 8, 2025, 5:37 PM John Smith via Python-list <
> > [email protected]> wrote:
> >
> >> Thanks for the recommendations. I'm building a whole new version based
> on
> >> the old one, with simpler code and functions to find win stats.
> >> --
> >> https://mail.python.org/mailman3//lists/python-list.python.org
> >>
>
> --
> https://mail.python.org/mailman3//lists/python-list.python.org
>
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