Django project giving me TypeError: combine() takes at most 2 arguments (3 given) when deployed

Question

我已经在 digitalocean 上部署了我的 django 项目，到目前为止它运行良好，直到我对我在数据库中存储日期时间的方式进行了一些更改。我让他们有时间意识（在他们天真之前）。最终，我解决了所有错误并且我的时间都知道了，并且项目运行良好，直到我将更改拉到我的生产服务器并且当我尝试部署它时，它给了我以下错误：

类型错误：combine() 最多接受 2 个参数（给定 3 个）

这一行：

 start_time_in_local_time = datetime.datetime.combine(date, start_time, time_difference)

就上下文而言，每次我尝试与其他用户安排课程时都会发生此错误。我从用户那里收到了时间和时区信息，并且我正在尝试将该课程的开始和结束时间存储在我的数据库中。

代码如下：

def error_check_and_save_lesson(request, lesson, context):
# Get lesson timezone when (re)scheduling lessons
minutes_offset = request.POST.get('timezoneInfo','')
minutes_difference = int(minutes_offset)
time_difference = datetime.timezone(datetime.timedelta(minutes=minutes_difference))
# Get lesson name when (re)scheduling lessons
if not request.POST['name']:
    context['name_error'] = True
else:
    lesson.name = request.POST['name']
# Get lesson location when (re)scheduling lessons
if not request.POST['location']:
    context['location_error'] = True
else:
    lesson.location = request.POST['location']
# Get lesson date when (re)scheduling lessons
if not request.POST['date']:
    context['date_error'] = True
else:
    date = datetime.datetime.strptime(request.POST['date'], '%m/%d/%Y').date() # a date object.
# Get lesson starting time when (re)scheduling lessons
if not request.POST['startingTime']:
    context['starting_time_error'] = True
else:
    start_time = datetime.datetime.strptime(request.POST['startingTime'], '%I:%M %p').time() # a time object
# Get lesson ending time when (re)scheduling lessons
if not request.POST['endingTime']:
    context['ending_time_error'] = True
else:
    end_time = datetime.datetime.strptime(request.POST['endingTime'], '%I:%M %p').time()

lesson.tutor = request.user if request.user.profile.user_type == 'tutor' else context['person_to_schedule_with']
lesson.student = request.user if request.user.profile.user_type == 'student' else context['person_to_schedule_with']

if not context.get('name_error') and not context.get('location_error') and not context.get('date_error') and not context.get('starting_time_error') and not context.get('ending_time_error'):
    utczone = datetime.timezone(datetime.timedelta(0)) # used to convert times in other timezones to UTC
    start_time_in_local_time = datetime.datetime.combine(date, start_time) # THE BUG!
    start_time_in_local_time=start_time_in_local_time.replace(tzinfo=time_difference)
    end_time_in_local_time = datetime.datetime.combine(date, end_time)
    end_time_in_local_time = end_time_in_local_time.replace(tzinfo=time_difference)
    lesson.start_time = start_time_in_local_time.astimezone(utczone) # store starting time in UTC
    lesson.end_time = end_time_in_local_time.astimezone(utczone) # store ending time in UTC
    lesson.created_by = request.user
    lesson.save()
    context['schedule_success'] = "Your Lesson '" + lesson.name + "' Was Scheduled Successfully"
return context

我已经检查了文档 (https://docs.python.org/3/library/datetime.html)，该方法有 3 个参数，我特别困惑，因为在我的项目中导致错误的确切操作（安排课程）在本地工作得很好。我猜这与我的本地数据库是 sqlite 而我的生产数据库是 postgres 有关，但我不确定。

此外，是的，我已将 USE_TZ 更改为 True

Answer 1

Python 2 和 Python 3 对 [= 有不同的签名10=]方法

Python 2 method signature,

datetime.combine(date, time)

Python 3 method signature

datetime.combine(date, time, tzinfo=self.tzinfo)

Django project giving me TypeError: combine() takes at most 2 arguments (3 given) when deployed

Django project giving me TypeError: combine() takes at most 2 arguments (3 given) when deployed

python

deployment

django

datetime

digital-ocean