toisoformat/fromisoformat的替代方案:您可以使用date。Toordinal和datetime.fromordinal:

import datetime

start_date = datetime.date(1991, 2, 20)
start_date_midnight = datetime.datetime.fromordinal(start_date.toordinal())

我怀疑这比转换到/从字符串更有效。

你可以这样测试这个过程:

def test_datetime_from_date():
    for x in range(1,1000000):
        date_ = datetime.date.fromordinal(x)
        datetime_ = datetime.datetime.fromordinal(date_.toordinal())
        datetime_iso_date, t, datetime_iso_time = datetime_.isoformat().partition("T")
        assert datetime_iso_date == date_.isoformat()

使用Django timezone util使dt能够感知datetime时区:

from django.utils import timezone


timezone.now().replace(*(*dt.timetuple()[:6], 0))

我真的需要手动调用datetime(d。年，月，日)

不，你更想打电话

date_to_datetime(dt)

你可以在项目中的一些utils/time.py中实现一次:

from typing import Optional
from datetime import date, datetime

def date_to_datetime(
    dt: date,
    hour: Optional[int] = 0,
    minute: Optional[int] = 0, 
    second: Optional[int] = 0) -> datetime:

    return datetime(dt.year, dt.month, dt.day, hour, minute, second)

我是Python的新手。但是这段代码为我工作，它将我提供的指定输入转换为datetime。这是代码。如果我说错了，请指正。

import sys
from datetime import datetime
from time import mktime, strptime

user_date = '02/15/1989'
if user_date is not None:
     user_date = datetime.strptime(user_date,"%m/%d/%Y")
else:
     user_date = datetime.now()
print user_date

你可以使用easy_date来简化:

import date_converter
my_datetime = date_converter.date_to_datetime(my_date)

你可以使用这个类:

import time 

import datetime

class TimingClass():

    def __init__(self):

        self.YEAR        = datetime.date.today().year
        self.MONTH       = datetime.date.today().month
        self.DATE        = datetime.date.today().day
        self.HOUR        = datetime.datetime.now().hour
        self.MINUTE      = datetime.datetime.now().minute
        self.SECONDS     = datetime.datetime.now().second
        
        self.TODAY       = datetime.date.today()
        self.YESTERDAY   = datetime.datetime.strftime( (self.TODAY - datetime.timedelta(days = 1)) , '%Y-%m-%d')
        self.TOMORROW   = datetime.datetime.strftime( (self.TODAY + datetime.timedelta(days = 1)) , '%Y-%m-%d')
        
        self.TODAY_datetime = datetime.datetime.combine(datetime.date.today(), datetime.datetime.min.time())