diff --git a/build.py b/build.py
index e69de29..12dfa93 100644
--- a/build.py
+++ b/build.py
@@ -0,0 +1,11 @@
+def is_rotation(s1,s2):
+    if(s1==None or s2==None):
+        return False
+    if(s1==''):
+        if(s2==''):
+            return True
+        return False
+    for i in range(len(s1)):
+        if(s1[i:]+s1[0:i]==s2):
+            return True
+    return False
diff --git a/build.pyc b/build.pyc
new file mode 100644
index 0000000..828bf5e
Binary files /dev/null and b/build.pyc differ
diff --git a/tests/__init__.pyc b/tests/__init__.pyc
new file mode 100644
index 0000000..b046d07
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..1fa696f
Binary files /dev/null and b/tests/test_is_rotation.pyc differ