save project

diy.py

@@ -3,7 +3,19 @@
 # 省略繁杂情节，刘关张三人一起冲入战场，围攻吕布：
 # 省略繁杂情节，刘关张三人一起冲入战场，围攻吕布：
 a=['吕布']
 a=['吕布']
 b=['袁术','公孙瓒','关羽','张飞','刘备','曹操']
 b=['袁术','公孙瓒','关羽','张飞','刘备','曹操']
-#added by teacher
+#[start]added by teacher
 a.extend(b[2:5])
 a.extend(b[2:5])
 print(a)
 print(a)
+c = a + b
+print(a[:])
+print(c)
+print(c[2:])
+print(c[:6])
+print(c[-1:])
+print(c[-5:-1])
+print(c[-5:0])
+print(c[-1:-5:-1])
+print(c[-1:-6:-2])
+print(c[-6:-1:2])
+#[end]added by teacher