diff --git a/fb.py b/fb.py
new file mode 100644
index 0000000..2f49627
--- /dev/null
+++ b/fb.py
@@ -0,0 +1,10 @@
+def FizzBuzz(i):
+    if i % 3 * i % 5:
+        return i
+    else:
+        return "Fizz"[i % 3 * 4:] + "Buzz"[i % 5 * 4:]
+
+
+if __name__ == '__main__':
+    for i in range(1, 101):
+        print(FizzBuzz(i))
diff --git a/unit_TDD.py b/unit_TDD.py
new file mode 100644
index 0000000..2ea9ea8
--- /dev/null
+++ b/unit_TDD.py
@@ -0,0 +1,14 @@
+import unittest
+from fb import FizzBuzz
+
+
+class Tf(unittest.TestCase):
+    def test_aa(self):
+        self.assertEquals(FizzBuzz(1), 1)
+        self.assertEquals(FizzBuzz(3), 'Fizz')
+        self.assertEquals(FizzBuzz(5), 'Buzz')
+        self.assertEquals(FizzBuzz(15), 'FizzBuzz')
+
+
+if __name__ == '__main__':
+    unittest.main()