https://adventofcode.com/2023/day/1

day1b.py

#!/usr/bin/env python3

import sys

numbers = {"zero": 0, 
           "one": 1, 
           "two": 2, 
           "three": 3, 
           "four": 4, 
           "five": 5, 
           "six": 6, 
           "seven": 7, 
           "eight": 8, 
           "nine": 9}

def getFirstDigit(line: str, reverse: bool) -> str:
    indices = reversed(range(len(line))) if reverse else range(len(line)) 
    for c in indices:
        if line[c].isdigit():
            return line[c]
        for i in range(0, 5):
            if c + i < len(line) and line[c : c + i + 1] in numbers:
                return str(numbers[line[c : c + i + 1]])

def getCalibrationValue(line: str) -> int:
    return int(getFirstDigit(line, False) + getFirstDigit(line, True))

result = 0

for line in sys.stdin:
    result += getCalibrationValue(line)

print(result)