Day 4 completed

+ refactored day 1 to 3 with black -l 119

day4/part1.py

@@ -0,0 +1,27 @@
+#!/usr/bin/env python3.11
+import re
+
+input_file = "input.txt"
+sum = 0
+with open(input_file) as input:
+    while line := input.readline():
+        if match := re.match("Card +(\d+): (.*) \| (.*)", line):
+            winning_numbers = list(map(int, re.split(" +", match.group(2).lstrip(" "))))
+            numbers = map(int, re.split(" +", match.group(3).lstrip(" ")))
+            # print(match.group(1), winning_numbers, numbers)
+            points = 0
+            # print(winning_numbers, end="; ")
+            for number in numbers:
+                # print(number, end=",")
+                if number in winning_numbers:
+                    # print("is winning", end="; ")
+                    if points == 0:
+                        points = 1
+                    else:
+                        points *= 2
+                else:
+                    # print("is not winning", end="; ")
+                    pass
+            # print("\n", points)
+            sum += points
+print(sum)