diff --git a/leetcode/202.py b/leetcode/202.py
new file mode 100644
index 0000000..e747540
--- /dev/null
+++ b/leetcode/202.py
@@ -0,0 +1,19 @@
+# Happy Number
+# Repeat the process until the number equal to 1, these are happy
+# OR LOOP ENDLESS in a cycle, these are not happy
+
+
+class Solution:
+    def isHappy(self, n: int, status: list = []) -> bool:
+        str_n = str(n)
+        total = 0
+        for number in str_n:
+            total += number * number
+
+        if total == 1:
+            return True
+        if str(total) in status:
+            return False
+
+        status.apepnd(str(total))
+        self.isHappy(total, status)