feat: 新增技能扩展N5一章相关示例源码

code/newsletter/N5/generator.py

@@ -0,0 +1,22 @@
+def make_cards(values):
+    container = values or []
+    for value in container:
+        yield value
+
+
+def main():
+    from collections.abc import Generator
+
+    cards = make_cards(list("JQK"))
+    print(cards)
+
+    print(f"Is the cards variable a generator? {isinstance(cards, Generator)}")
+    for card in cards:
+        print(card)
+
+    results = list(cards)
+    print(results)
+
+
+if __name__ == '__main__':
+    main()