diff --git a/pair_sum.py b/pair_sum.py
index e69de29..5f4ba15 100644
--- a/pair_sum.py
+++ b/pair_sum.py
@@ -0,0 +1,17 @@
+def pairSum(x,sum):
+    List = []
+    s = set(x)
+
+    for i in x:
+        diff = sum-i
+        s.remove(i)
+        if diff in s:
+            t = (i, diff)
+            List.append(t)
+    return List
+
+
+
+L = [1,2,3,4]
+sum = 5
+pairSum(L,sum)
diff --git a/pair_sum.pyc b/pair_sum.pyc
new file mode 100644
index 0000000..1ac54f3
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diff --git a/tests/__init__.pyc b/tests/__init__.pyc
new file mode 100644
index 0000000..62e8599
Binary files /dev/null and b/tests/__init__.pyc differ
diff --git a/tests/test_pairSum.pyc b/tests/test_pairSum.pyc
new file mode 100644
index 0000000..c037d15
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