some progress on advent of code

day3_1.py

@@ -0,0 +1,37 @@
+#!/usr/bin/env python3
+import sys, utils
+
+def power_consumption(l: list):
+    most, least = calculate_common(l)
+    return int(most, 2) * int(least, 2)
+
+def calculate_common(l: list):
+    counter = [0 for _ in range(len(l[0]))]
+    for line in l:
+        line = line.rstrip('\n')
+        for i in range(len(line)):
+            if line[i] == '1':
+                counter[i] += 1
+
+    half_len = len(l) / 2
+    most_common, least_common = '', ''
+
+    for val in counter:
+        if val >= half_len:
+            most_common += '1'
+            least_common += '0'
+        else:
+            most_common += '0'
+            least_common += '1'
+    return most_common, least_common
+
+if __name__ == '__main__':
+    if len(sys.argv) < 2:
+        print("please supply input file")
+        sys.exit()
+
+    f = utils.File(sys.argv[1])
+
+    print(power_consumption(f.get_strings()))
+
+