date1 = month + "-01 00:00:00" print(date1) date2 = datetime.datetime.strptime("%Y-%m-%d %H:%M:S",date1)这个语句正确嘛?
时间: 2023-07-14 10:13:27 浏览: 71
这个语句是有问题的。正确的写法应该是将 "%Y-%m-%d %H:%M:S" 改为 "%Y-%m-%d %H:%M:%S",即将大写的字母 S 改为小写的字母 s,因为在 datetime 格式化字符串中,%S 表示秒数,而不是毫秒数。所以正确的代码应该是:
```
import datetime
month = "2022-01"
date1 = month + "-01 00:00:00"
print(date1)
date2 = datetime.datetime.strptime(date1, "%Y-%m-%d %H:%M:%S")
print(date2)
```
这样就可以正确地将字符串转换为 datetime 对象了。
相关问题
import datetime # a = datetime.datetime.now() def day_get(d): if type(d).__name__ == "str": d = datetime.datetime.strptime(d, '%Y-%m-%d %H:%M:%S') oneday = datetime.timedelta(days=1) day = d - oneday date_from = datetime.datetime(day.year, day.month, day.day, 0, 0, 0) date_to = datetime.datetime(day.year, day.month, day.day, 23, 59, 59) print('---'.join([str(date_from), str(date_to)])) def week_get(d): if type(d).__name__ == "str": d = datetime.datetime.strptime(d, '%Y-%m-%d %H:%M:%S') dayscount = datetime.timedelta(days=d.isoweekday()) dayto = d - dayscount sixdays = datetime.timedelta(days=6) dayfrom = dayto - sixdays date_from = datetime.datetime(dayfrom.year, dayfrom.month, dayfrom.day, 0, 0, 0) date_to = datetime.datetime(dayto.year, dayto.month, dayto.day, 23, 59, 59) datelist = [[str(date_from)], [str(date_to)]] # print('---'.join([str(date_from), str(date_to)])) return datelist def multi_week_get(d, num): if type(d).__name__ == "str": d = datetime.datetime.strptime(d, '%Y-%m-%d %H:%M:%S') date_num = [] # date_num = [date_to1] for i in range(num - 1, 0, -1): dayscount = datetime.timedelta(days=d.isoweekday()) dayto = d - dayscount sixdays = datetime.timedelta(days=6 * i) dayfrom = dayto - sixdays date_from = str(datetime.datetime(dayfrom.year, dayfrom.month, dayfrom.day, 10, 0, 0)) date_num.append(date_from) dayscount1 = datetime.timedelta(days=d.isoweekday()) onedays = datetime.timedelta(days=1) dayto1 = d - dayscount1 + onedays date_to1 = str(datetime.datetime(dayto1.year, dayto1.month, dayto1.day, 10, 0, 0)) date_num.append(date_to1) return date_num def month_get(d): if type(d).__name__ == "str": d = datetime.datetime.strptime(d, '%Y-%m-%d %H:%M:%S') dayscount = datetime.timedelta(days=d.day) dayto = d - dayscount date_from = datetime.datetime(dayto.year, dayto.month, 1, 0, 0, 0) date_to = datetime.datetime(dayto.year, dayto.month, dayto.day, 23, 59, 59) # print('---'.join([str(date_from), str(date_to)])) datelist = [[str(date_from)], [str(date_to)]] return datelist class op_date(object): def week_get(self, param): pass if __name__ == "__main__": op_date = op_date() # print(op_date.week_get("2023-06-09 23:00:00")[0]) print(op_date.week_get("2023-06-09 23:00:00")[1]) print(multi_week_get("2023-06-09 23:00:00", 4))
这段代码是关于日期时间的操作,包括获取前一天、上一周、上几周、上个月的起止时间。其中,day_get函数获取前一天的起止时间,week_get函数获取上一周的起止时间,multi_week_get函数获取上几周的起始时间,month_get函数获取上个月的起止时间。op_date类是一个日期时间操作的类,其中week_get是一个占位函数,可以在后续的开发中被具体实现。在代码的最后,通过实例化op_date对象并调用其中的函数来进行测试。
import datetimedate_str = "2023/1/8"date = datetime.datetime.strptime(date_str, "%Y/%m/%d").date()day_of_year = (date - date.replace(month=1, day=1)).days + 1print(day_of_year)
这个代码可以计算出给定日期在当年中的天数。比如对于输入的 2023/1/8,输出结果为 8,表示该日期是 2023 年的第 8 天。
需要注意的是,这个代码中使用了 Python 内置的 datetime 模块,所以在运行之前需要先导入该模块。同时,输入日期的格式必须为字符串类型,且符合 "%Y/%m/%d" 的格式,否则会出现解析错误。
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