save project

diy.py

-bros=["刘备","关羽","张飞"]
-bros[0]="关羽"
-bros[1]="刘备"
-bros.pop(1)
-bros.insert(1,'小包')
-bros.append('小关')
-b=["小李","小马","小高"]
-bros.extend(b)
+bros=['关羽', '小包', '张飞', '小关', '小李', '小马', '小高']
+print(bros[3:5])
+print(bros[-4:-2])
+print(bros[3:-2])
+print(bros[-4:5])
 print(bros)
 print(bros)
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