An a little over the top Bowling Score app.

bowling.py

#
# An a little over the top Bowling Score app.
# Copyright 2022 by Matthew Denson <mdenson@dayspringpartners.com>
#
# Example Usage:
#  To score a set of bowls provided in JSON format in stdin.
#  $ echo "[1,4,4,5,6,4,5,5,10,0,1,7,3,6,4,10,2,8,9]" | python3 bowling.py stdin
#  +-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+
#  |    1|    2|    3|    4|    5|    6|    7|    8|    9|   10|
#  +-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+
#  |1   4|4   5|6   /|5   /|    X|0   1|7   /|6   /|    X|2 / 9|
#  |     |     |     |     |     |     |     |     |     |     |
#  |  5  | 14  | 29  | 49  | 60  | 61  | 77  | 97  | 117 | 136 |
#  +-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+
#
#  To score a game interactively
#  $ python3 bowling.py play
#  Let's play!
#  +-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+
#  |    1|    2|    3|    4|    5|    6|    7|    8|    9|   10|
#  +-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+
#  |     |     |     |     |     |     |     |     |     |     |
#  |     |     |     |     |     |     |     |     |     |     |
#  |     |     |     |     |     |     |     |     |     |     |
#  +-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+
#  Your next roll: (0-10,x,X)
#  8
#  +-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+
#  |    1|    2|    3|    4|    5|    6|    7|    8|    9|   10|
#  +-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+
#  |8    |     |     |     |     |     |     |     |     |     |
#  |     |     |     |     |     |     |     |     |     |     |
#  |     |     |     |     |     |     |     |     |     |     |
#  +-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+
#  Your next roll: (0-2,/)
#  /
#  +-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+
#  |    1|    2|    3|    4|    5|    6|    7|    8|    9|   10|
#  +-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+
#  |8   /|     |     |     |     |     |     |     |     |     |
#  |     |     |     |     |     |     |     |     |     |     |
#  |     |     |     |     |     |     |     |     |     |     |
#  +-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+
#  Your next roll: (0-10,x,X)
#  .....

import argparse
import json
import sys

def score_game(pins):
    return score_frame([], pins)
def score_frame(running_score, pins):
    frame_num = len(running_score) + 1
    #terminal cases
    if len(pins) == 0:
        return running_score
    elif frame_num > 10:
        running_score[9]['pins'].extend(pins)
        return running_score

    if frame_num == 1:
        prev_score = 0
    else:
        prev_score = running_score[len(running_score) - 1]['score']

    if len(pins) > 0 and pins[0] == 10:
        # strike
        if prev_score == None or len(pins) < 3:
            score = None
        else:
            score = prev_score + pins[0] + pins[1] + pins[2]
        running_score.append({"frame": frame_num, "pins": pins[:1], "score": score})
        return score_frame(running_score, pins[1:])
    elif len(pins) > 1 and pins[0] + pins[1] == 10:
        # spare
        if prev_score == None or len(pins) < 3:
            score = None
        else:
            score = prev_score + pins[0] + pins[1] + pins[2]
        running_score.append({"frame": frame_num, "pins": pins[:2], "score": score})
        return score_frame(running_score, pins[2:])
    else:
        # open
        if prev_score == None or len(pins) < 2:
            score = None
        else:
            score = prev_score + pins[0] + pins[1]
        running_score.append({"frame": frame_num, "pins": pins[:2], "score": score})
        return score_frame(running_score, pins[2:])

def print_game(frames):
    top_bottom = ""
    num = ""
    bowls = ""
    space = ""
    scores = ""
    for f in frames:
        top_bottom = top_bottom + "+-----"
        num = num + "|   {frame:>2}".format(frame = f["frame"])

        pins = f["pins"]
        if f["frame"] == 10: # 10th frame (special)
            pin_str = ""
            sum = 0
            for p in pins:
                sum = sum + p
                if p == 10:
                    pin_str = pin_str + "X"
                    sum = 0
                elif sum == 10:
                    pin_str = pin_str + "/"
                    sum = 0
                else:
                    pin_str = pin_str + str(p)
                pin_str = pin_str + " "
            pin_str = pin_str.strip().ljust(5)
            bowls = bowls + "|" + pin_str
        elif len(pins) == 1:
            if pins[0] == 10:
                bowls = bowls + "|    X"
            else:
                bowls = bowls + "|" + str(pins[0]) + "    "
        else:
            if pins[0] + pins[1] == 10:
                bowls = bowls + "|" + str(pins[0]) + "   /"
            else:
                bowls = bowls + "|" + str(pins[0]) + "   " + str(pins[1])

        space = space + "|     "

        if f["score"]:
            scores = scores + "| {score:^3} ".format(score = f["score"])
        else:
            scores = scores + "|     "

    for f in range(len(frames)+1, 11):
        top_bottom = top_bottom + "+-----"
        num = num + "|   {frame:>2}".format(frame = f)
        bowls = bowls + "|     "
        space = space + "|     "
        scores = scores + "|     "

    print(top_bottom + "+")
    print(num + "|")
    print(top_bottom + "+")
    print(bowls + "|")
    print(space + "|")
    print(scores + "|")
    print(top_bottom + "+")

def from_stdin(args):
     print_game(score_game(json.load(sys.stdin)))

def interactive_game(args):
     print("Let's play!")
     frame_pins = 0
     curr_frame = 1
     pins = []
     done = False
     while not done:
        score = score_game(pins)
        print_game(score)
        if (len(score) == 10 and score[9]["score"]):
            done = True
        else:
            if len(score) > 0 and score[len(score) - 1]['score'] or frame_pins == 10:
                frame_pins = 0
                first_roll = True
            elif len(score) > 0:
                first_roll = False
            else:
                first_roll = True

            keep_reading = True

            if (first_roll):
                allowed = "0-10,x,X";
            else:
                max = 10 - frame_pins;
                allowed = "0-" + str(max) + ",/";
            while keep_reading:
                print("Your next roll: (" + allowed + ")")

                count = 0
                roll = input()
                if roll in ['0','1','2','3','4','5','6','7','8','9','10','/','x','X']:
                    if roll == '/' and frame_pins > 0:
                        count = 10 - frame_pins
                        keep_reading = False
                    elif roll == 'x' or roll == 'X':
                        if frame_pins == 0:
                            count = 10
                            keep_reading = False
                    else:
                        count = int(roll)
                        if count + frame_pins <=10:
                            keep_reading = False
            pins.append(count)
            frame_pins = frame_pins + count

parser = argparse.ArgumentParser()
parser.add_argument('--version', action='version', version='1.0.0')

subparsers = parser.add_subparsers()

stdin_parser = subparsers.add_parser('stdin')
stdin_parser.set_defaults(func=from_stdin)

play_parser = subparsers.add_parser('play')
play_parser.set_defaults(func=interactive_game)

if __name__ == '__main__':
    args = parser.parse_args()
    args.func(args)