Solve 2021 Day 3 Part 1 in python

2021/Day3/Python/binary_diagnostics.py

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+def most_common(lst):
+    return max(set(lst), key=lst.count)
+
+def least_common(lst):
+    return min(set(lst), key=lst.count)
+
+# Part 1
+with open("../input.txt") as f:
+    lines = list(map(lambda l: l.strip(), f.readlines()))
+    binaries = [[] for _ in list(lines[0])]
+
+    for line in lines:
+        for i, bit in enumerate(line):
+            binaries[i].append(bit)
+
+    gamma_bin = ""
+    epsilon_bin = ""
+
+    for column in binaries:
+        print(column)
+        gamma_bin += most_common(column)
+        epsilon_bin += least_common(column)
+
+
+    gamma = int(gamma_bin, 2)
+    epsilon = int(epsilon_bin, 2)
+
+    print(f"Gamma: {gamma}")
+    print(f"Epsilon: {epsilon}")
+    print(f"Gamma * Epsilon: {gamma * epsilon}")
+    
+
+# Part 2
+with open("../input.txt") as f:
+    lines = map(lambda l: l.strip(), f.readlines())