Add FizzBuzz implementation in fizzbuzz.py

fizzbuzz.py

@@ -0,0 +1,9 @@
+for i in range(1, 21):
+    if i % 3 == 0 and i % 5 == 0:
+        print('FizzBuzz')
+    elif i % 3 == 0:
+        print('Fizz')
+    elif i % 5 == 0:
+        print('Buzz')
+    else:
+        print(i)