Question

我有两个列表唯一日期的第一个和时间的第二个我想创建日期时间范围

例如

Date = [datetime.date(2020, 12, 28) datetime.date(2020, 12, 29)
 datetime.date(2020, 12, 30) datetime.date(2020, 12, 31)]

Time  = [datetime.time(9, 15) datetime.time(10, 30) datetime.time(11, 45)
 datetime.time(13, 0) datetime.time(14, 15)]

想要输出

<头>

日期时间
2020-12-28 09:15:00
2020-12-28 10:30:00
2020-12-28 11:45:00
2020-12-28 13:00:00
2020-12-28 14:15:00
2020-12-29 09:15:00
2020-12-29 10:30:00
2020-12-29 11:45:00
2020-12-29 13:00:00
2020-12-29 14:15:00

等等

感谢和问候

Answer 1

您可以使用嵌套列表推导来实现：

    for(int i = 0; i < packNumber.length; i++) {
        initialValue = '9,50,100,$i,0,$checksumId,0/';
        await characteristic
         .write(utf8.encode(initialValue)).then((wValue) async {
                 await Future.delayed(Duration(milliseconds: 100)).then((value) async {
                       await characteristic.read().then((rValue) {
                            //do something with rVlaue
                       });
                 });
        });
   }

其中 import datetime date = [datetime.date(2020, 12, 28), datetime.date(2020, 12, 29), datetime.date(2020, 12, 30), datetime.date(2020, 12, 31)] time = [datetime.time(9, 15), datetime.time(10, 30), datetime.time(11, 45), datetime.time(13, 0), datetime.time(14, 15)] output_list = ["{} {}".format(d, t) for d in date for t in time] 包含：

output_list

从唯一日期和时间范围列表创建日期时间范围

1 个答案: