primeiro commit com exercicios de Exercism realizados até esta data

python/square-root/square_root.py

@@ -0,0 +1,7 @@
+def square_root(number):
+    if number <= 0:
+        raise ValueError("only accept positive integers")
+    for root in range(1, number + 1):
+        if (root * root) == number:
+            return root
+    return 0