save project

diy.py

@@ -3,6 +3,8 @@
 # 省略繁杂情节，刘关张三人一起冲入战场，围攻吕布：
 a=['吕布']
 b=['袁术','公孙瓒','关羽','张飞','刘备','曹操']
-b.
+b[2:5]
+print(b[2:5])
+c=b[2:5]
+c.etend(a)
 print(a)
\ No newline at end of file
-