diff --git a/191-number-of-1-bits/191-number-of-1-bits.py b/191-number-of-1-bits/191-number-of-1-bits.py
new file mode 100644
index 0000000..fe25695
--- /dev/null
+++ b/191-number-of-1-bits/191-number-of-1-bits.py
@@ -0,0 +1,3 @@
+class Solution:
+    def hammingWeight(self, n: int) -> int:
+        return str(bin(n)).count("1")
\ No newline at end of file