feat: plus equal operation

CoderLiLe · CoderLiLe · commit 491c2a6001f9 · 2025-04-04T10:19:14.000+08:00
diff --git a/codes/advanced_grammar/plus_equal.py b/codes/advanced_grammar/plus_equal.py
@@ -0,0 +1,23 @@
+def demo(num, num_list: list):
+
+    print("函数开始")
+
+    # 数值 等价于：num = num + num，不会影响外部变量
+    num += num
+
+    # 列表变量使用 += 不会做相加再赋值的操作
+    # 不同于 num_list = num_list + num_list
+    # 本质上是在调用列表的 extend 方法
+    # num_list.extend(num_list)
+    num_list += num_list
+    print(num)
+    print(num_list)
+
+    print("函数完成")
+
+
+gl_num = 9
+gl_list = [1, 2, 3]
+demo(gl_num, gl_list)
+print(gl_num)
+print(gl_list)
