python中基础知识和练习

1、交换两个变量的值 2、3 and 5 and 0 and "hello" 值是？ 3、3 or 5 or 0 or "hello" 值是？ 4、字符串逆序输出 str = "hello world" ----------------------------------------------------------------------------------------------------- ''' 1、获取[1,3,2] 2、获取["a",4,"b"] 3、获取[1,2,4,5] 4、获取["c"] 5、获取["b","a",3] ''' num_list = [1,3,2,"a",4,"b",5,"c"] ----------------------------------------------------------------------------------------------------- 采用range()生成0~60之内的偶数，并存入列表，输出列表 ----------------------------------------------------------------------------------------------------- # 删除列表中所有姓张的元素 str_list = ["张三", "李四", "张五", "瓦七", "张六","张七","广八"] ----------------------------------------------------------------------------------------------------- # 去除列表中的重复元素 num_list = [1,6,5,4,7,9,0,7,5,12,78,43,1,6,9] ----------------------------------------------------------------------------------------------------- ''' 1、获取“成都” 2、获取所有联系信息 ['13540887654','13869876543'] 3、获取第一个联系电话 '13540887654' 4、将成都改为自贡 5、再添加一个地址 {"province": "广东","city": "深圳"} 6、为person添加一个爱好： hobit：羽毛球 7、删除年龄属性 ''' person = { "name": "张三", "age": 30, "address": [ { "province": "四川", "city": "成都" }, { "province": "辽宁", "city": "大连" } ], "phone":['13540887654','13869876543'] } ----------------------------------------------------------------------------------------------------- ''' 1、获取“成都” 2、获取所有联系信息 ['13540887654','13869876543'] 3、获取第一个联系电话 '13540887654' 4、将成都改为自贡 5、再添加一个地址 {"province": "广东","city": "深圳"} 6、为person添加一个爱好： hobit：羽毛球 7、删除年龄属性 ''' person = { "name": "张三", "age": 30, "address": [ { "province": "四川", "city": "成都" }, { "province": "辽宁", "city": "大连" } ], "phone":['13540887654','13869876543'] } ''' 结合header和student_dict实现信息输出。输出格式要求： 10000,班级：大数据1班、姓名：张三、年龄：20 ...... ''' header = ['班级', '姓名', '年龄'] student_dict = { '10000': ['大数据1班', '张三', 20], '10001': ['大数据1班', '李四', 21], '10002': ['大数据2班', '王五', 19], '10003': ['大数据3班', '赵六', 18], '10004': ['大数据3班', '邓七', 21], }