diff --git a/build.py b/build.py
index e69de29..2000720 100644
--- a/build.py
+++ b/build.py
@@ -0,0 +1,17 @@
+def is_rotation(s1,s2):
+    if s1 == None:
+        return False
+    elif s1 == '' and len(s2) != 0:
+        return False
+    elif s1 == '' and s2 == '':
+        return True
+    elif len(s1) != len(s2):
+        return False
+    else:
+        for i in range(len(s1)):
+            if s1[i:] and s2[:i]:
+                return True
+
+s1 = 'foobarbaz'
+s2 = 'barbazfoo'
+is_rotation(s1,s2)
diff --git a/build.pyc b/build.pyc
new file mode 100644
index 0000000..4b76aa5
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diff --git a/tests/__init__.pyc b/tests/__init__.pyc
new file mode 100644
index 0000000..50f7aa8
Binary files /dev/null and b/tests/__init__.pyc differ
diff --git a/tests/test_is_rotation.pyc b/tests/test_is_rotation.pyc
new file mode 100644
index 0000000..0454a68
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