day2.py

from operator import xor

def split_number(numbers):
    arrnum = numbers.split("-")
    return arrnum

def poscontains(position, string, char):
    if char == string[int(position)]:
        return True
    else:
        return False

with open('input_day2.txt', newline='') as file:
    lines = file.readlines()
    validpassword = []
    for line in lines:
        split = line.split(":")
        rules = split[0].split(" ")
        numbers = rules[0]
        letter = rules[1]
        count = int(split[1].count(letter))
        highlow = split_number(numbers)
        #if (count <= int(highlow[1])) & (count >= int(highlow[0])):
        #    print(count)
        #    validpassword.append(split[1])
        if xor(poscontains(highlow[0], split[1], letter), poscontains(highlow[1], split[1], letter)):
            validpassword.append(split[1])

print(len(validpassword))