python - 列表中的日期时间对象
问题描述
#3. add times as field
self.scheduled_transmitions = self.scheduled_transmitions_copy[:]
self.scheduled_transmitions_copy = []
self.datetime_clock = start_datetime
counter = 0
for scheduled_transmition in self.scheduled_transmitions:
print(self.datetime_clock)
self.scheduled_transmitions[counter]["datetime"] = self.datetime_clock
self.datetime_clock = self.datetime_clock+datetime.timedelta(seconds=int(scheduled_transmition["duration_in_seconds"]))
self.scheduled_transmitions_copy.append(self.scheduled_transmitions[counter])
counter = counter + 1
print("------------")
self.scheduled_transmitions = self.scheduled_transmitions_copy[:]
self.scheduled_transmitions_copy = []
for scheduled_transmition in self.scheduled_transmitions:
print(scheduled_transmition["datetime"])
return 1
up 代码输出错误。
#3. add times as field
self.scheduled_transmitions = self.scheduled_transmitions_copy[:]
self.scheduled_transmitions_copy = []
self.datetime_clock = start_datetime
for scheduled_transmition in self.scheduled_transmitions:
print(self.datetime_clock)
entry = {"datetime":self.datetime_clock}
self.datetime_clock = self.datetime_clock+datetime.timedelta(seconds=int(scheduled_transmition["duration_in_seconds"]))
self.scheduled_transmitions_copy.append(entry)
print("------------")
self.scheduled_transmitions = self.scheduled_transmitions_copy[:]
self.scheduled_transmitions_copy = []
for scheduled_transmition in self.scheduled_transmitions:
print(scheduled_transmition["datetime"])
return 1
但最后一个没有。
为什么?
第一个代码的输出(错误):
2020-11-08 18:05:20.054000
2020-11-08 18:06:48.054000
2020-11-08 18:08:16.054000
2020-11-08 18:09:44.054000
2020-11-08 18:11:12.054000
2020-11-08 18:12:40.054000
2020-11-08 18:14:08.054000
2020-11-08 18:15:36.054000
2020-11-08 18:17:04.054000
2020-11-08 18:18:32.054000
------------
2020-11-08 18:18:32.054000
2020-11-08 18:18:32.054000
2020-11-08 18:18:32.054000
2020-11-08 18:18:32.054000
2020-11-08 18:18:32.054000
2020-11-08 18:18:32.054000
2020-11-08 18:18:32.054000
2020-11-08 18:18:32.054000
2020-11-08 18:18:32.054000
2020-11-08 18:18:32.054000
秒码的输出。
2020-11-08 18:03:13.265000
2020-11-08 18:04:41.265000
2020-11-08 18:06:09.265000
2020-11-08 18:07:37.265000
2020-11-08 18:09:05.265000
2020-11-08 18:10:33.265000
2020-11-08 18:12:01.265000
2020-11-08 18:13:29.265000
2020-11-08 18:14:57.265000
2020-11-08 18:16:25.265000
------------
2020-11-08 18:03:13.265000
2020-11-08 18:04:41.265000
2020-11-08 18:06:09.265000
2020-11-08 18:07:37.265000
2020-11-08 18:09:05.265000
2020-11-08 18:10:33.265000
2020-11-08 18:12:01.265000
2020-11-08 18:13:29.265000
2020-11-08 18:14:57.265000
2020-11-08 18:16:25.265000
解决方案
我不知道为什么会发生这种情况,但以下代码有效:
#3. add times as field
self.scheduled_transmitions = self.scheduled_transmitions_copy[:]
self.scheduled_transmitions_copy = []
self.datetime_clock = start_datetime
for scheduled_transmition in self.scheduled_transmitions:
print(self.datetime_clock)
entry = scheduled_transmition.copy()
entry["datetime"]=self.datetime_clock
self.datetime_clock = self.datetime_clock+datetime.timedelta(seconds=int(scheduled_transmition["duration_in_seconds"]))
self.scheduled_transmitions_copy.append(entry)
print("------------")
self.scheduled_transmitions = self.scheduled_transmitions_copy[:]
self.scheduled_transmitions_copy = []
for scheduled_transmition in self.scheduled_transmitions:
print(scheduled_transmition["datetime"])
return 1
我使用方法复制列表元素(字典)dictionary.copy()
。
推荐阅读
- apache-nifi - ListFile 处理器,强制处理器每次都列出完整目录
- java - 如何在不使用注释的情况下在休眠中设置自动递增 id?
- python - 解析查询字符串
- python-3.x - 如何在 s.isdigit() 命令上识别像 -1000 这样的数字?
- html - 包裹在“块”元素中时,一切都消失了
- xamarin - ModalViewController 无法在 Xamarin.iOS 中发布
- momentjs - MomentJS 在 format() 中反转日期和月份
- xpath - 具有多个文本元素的 contains() 的 XPath 查询
- vba - 我可以在我的用户表单中没有 commandbutton1 吗?
- asp.net - 使用 Response.Redirect() 重定向到第三方 URL 时发布数据