iteration inter

Author: qiwsir

newcodes/answers/q67.py

@@ -0,0 +1,18 @@
+#!/usr/bin/env python
+# coding=utf-8
+
+class ReverseRange:
+    def __init__(self, n):
+        self.n = n
+
+    def __next__(self):
+        if self.n == 0:
+            raise StopIteration
+        self.n -= 1
+        return self.n
+
+    def __iter__(self):
+        return self
+
+for i in ReverseRange(9):
+    print(i)