列表的增删改查，排序

'''#代码开始
list_1=['gong','juanxu','jing']
print(list_1[2])
list_1[2]="xia" #添加一个元素
print(list_1)
print("Wellcome to there ",list_1[0])
print("Wellcome to there ",list_1[1])
print("Wellcome to there ",list_1[2])
for i in ("chen","Ronin","Jimi"):  遍历插入元素
    list_1.append(i)
print(list_1)
list_1.insert(0,"chun") #在选择的位置插入元素
list_1.insert(3,"chun")
list_1.append("qing")
print(list_1)
for i in list_1:
    print("Wellcome to there ",i)

num_bg=0
while True:
    num_bg +=1
    if num_bg == 8:
        break
    else:
        guest=list_1.pop()
        print("I'am Sorry ",guest.title())
print(list_1)
print("Hello ",list_1[0],list_1[1])
del list_1[0,1]
print(list_1)
'''代码结束

list_2=["chongqing","hubei","guagxi","beihai"]
'''
print(sorted(list_2,reverse=True))
print(list_2)
'''
list_2.reverse()#反转列表
print(list_2)
list_2.reverse()
print(list_2)
list_2.sort()#排序
print(list_2)
list_2.sort()
print(list_2)