diff --git a/Python/chapter01/1.1 - Is Unique/jesus_1.1.sol.py b/Python/chapter01/1.1 - Is Unique/jesus_1.1.sol.py
new file mode 100644
index 0000000..e5558a9
--- /dev/null
+++ b/Python/chapter01/1.1 - Is Unique/jesus_1.1.sol.py	
@@ -0,0 +1,22 @@
+import unittest
+
+
+def is_unique(s: str) -> bool:
+    for x in s:
+        if s.count(x) > 1:
+            return False
+    return True
+
+class TestIsUnique(unittest.TestCase):
+
+    def test_is_unique(self):
+        self.assertEqual(is_unique('aaaaa'), False)
+        self.assertEqual(is_unique('abc'), True)
+        self.assertEqual(is_unique('abcda'), False)
+        self.assertEqual(is_unique('jhfbwej'), False)
+        self.assertEqual(is_unique(''), True)
+        self.assertEqual(is_unique('a'), True)
+
+
+if __name__ == '__main__':
+    unittest.main()
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