primeiro commit com exercicios de Exercism realizados até esta data

python/hamming/hamming.py

@@ -0,0 +1,8 @@
+def distance(strand_a, strand_b):
+    hamming_distance: int = 0
+    if len(strand_a) != len(strand_b):
+        raise ValueError("Strands must be of equal length.")
+    for index in range(len(strand_a)):
+        if strand_a[index] != strand_b[index]:
+            hamming_distance += 1
+    return hamming_distance