Python编程从入门到实践第三章列表作业

    添加删除列表作业

#*＊＊＊＊＊＊＊＊＊＊＊＊作业*＊＊＊＊＊＊＊＊＊＊＊＊
#*＊＊＊＊＊＊＊＊＊＊＊＊题目一*＊＊＊＊＊＊＊＊＊＊＊
#      制作一份名单，邀请名单中的人参加宴会
#*＊＊＊＊＊＊＊＊＊＊＊＊*＊＊＊＊＊＊＊＊＊＊＊＊＊＊
namelist = ['qiaodan','kebi','lufei','wukong','wusong']
print('yiqichigefan',namelist[0])
print('yiqichigefan '+ namelist[1])
print('yiqichigefan' + ' ' + namelist[2])
print('yiqichigefan',namelist[3])
print('yiqichigefan',namelist[4])
#*＊＊＊＊＊＊＊＊＊＊＊＊题目二*＊＊＊＊＊＊＊＊＊＊＊
#       有一个人来不了，需要修改名单，指出谁
#       来不了，并更新名单，再发一次邀请。
#*＊＊＊＊＊＊＊＊＊＊＊＊*＊＊＊＊＊＊＊＊＊＊＊＊＊＊
namelist_laibuliao = namelist.pop(0)
namelist.append('yaoming')
print(namelist_laibuliao,'laibuliaole')
print('yiqichigefan',namelist[0])
print('yiqichigefan '+ namelist[1])
print('yiqichigefan' + ' ' + namelist[2])
print('yiqichigefan',namelist[3])
print('yiqichigefan',namelist[4])
#*＊＊＊＊＊＊＊＊＊＊＊＊题目三*＊＊＊＊＊＊＊＊＊＊＊
#       又搞了一个很大的餐桌，准备再邀请三个
#       人，使用多种方法将新人加进列表中。
#*＊＊＊＊＊＊＊＊＊＊＊＊*＊＊＊＊＊＊＊＊＊＊＊＊＊＊
namelist.insert(0,'cisco')
namelist.insert(3,'juniper')
namelist.append('huawei')
print(namelist)
#*＊＊＊＊＊＊＊＊＊＊＊＊题目四*＊＊＊＊＊＊＊＊＊＊＊
#       桌子不买了，就只能邀请两个人了，
#    将不邀请的人发信道歉，最后两个人发邀请
#*＊＊＊＊＊＊＊＊＊＊＊＊*＊＊＊＊＊＊＊＊＊＊＊＊＊＊
print(namelist.pop(),'buyaoqingnile')
print(namelist.pop(),'buyaoqingnile')
print(namelist.pop(),'buyaoqingnile')
print(namelist.pop(),'buyaoqingnile')
print(namelist.pop(),'buyaoqingnile')
print(namelist.pop(),'buyaoqingnile')
print(namelist[0],'laichifana')
print(namelist[1],'laichifana')
#*＊＊＊＊＊＊＊＊＊＊＊＊*＊＊＊＊＊＊＊＊＊＊＊＊＊＊

    操作列表作业

namelist = ['cisco', 'juniper', 'huawei', 'checkpoint', 'paloalto']
namelist.sort()  # 永久顺序排序
print(namelist)
namelist.sort(reverse=True)  # 永久倒序排序
print(namelist)
print(sorted(namelist))  # 临时排序，不影响原始列表。
print(namelist)
namelist.reverse()  # 永久倒序
namelist.reverse()  # 再次调用可恢复数列排序
print(namelist)
print(len(namelist)) #确认列表长度