diff --git a/217-Contains-Duplicate.py b/217-Contains-Duplicate.py
new file mode 100644
index 0000000..7d3975c
--- /dev/null
+++ b/217-Contains-Duplicate.py
@@ -0,0 +1,5 @@
+class Solution:
+    def containsDuplicate(self, nums: List[int]) -> bool:
+        length=len(nums)
+        nums[:]=sorted(nums)        
+        return any(nums[i]==nums[i+1] for i in range(length-1))