由于日期时间比较，根据时间范围过滤 icalendar 事件

Question

我试图在下个月内从 ics 文件中提取事件，但我自己制作日期时间并与 ics 文件中的日期时间进行比较似乎不起作用并且出现错误 TypeError: can't compare offset-naive and offset-aware datetimes

我尝试了 here 找到的答案，但仍然出现相同的错误。下面是我正在使用的代码。

def read_from_cal():
    g = open('calendar.ics', 'rb')
    gcal = Calendar.from_ical(g.read())
    year = datetime.now().year
    month = datetime.now().month
    day = datetime.now().day
    hour = datetime.now().strftime("%H")
    minute = datetime.now().strftime("%M")

    next_month = datetime(int(year), int(month)+1, int(day), int(hour), int(minute), 0, tzinfo=pytz.UTC)
    #next_month = next_month.replace(tzinfo=pytz.UTC)
    for component in gcal.walk():
        if component.name == "VEVENT":
            # time printed out in format:
            #      year-month-day hour:min:sec
            summ = component.get('summary')
            start = component.get('dtstart').dt
            end = component.get('dtend').dt
            if now <= start <= next_month:
                print("Worked")
                print(summ, start, end)

我已经尝试过使用 replace 将我的时间更改为 utc 并将其放入 next_month 变量本身，它们都给出了上面相同的错误。

我也试过this and this没用。

Answer 1

我试过使用此处生成的 .ics 文件，所以不会是同一个问题，但在某些情况下开始是 datetime.datetime，在其他情况下是 datetime.date。

此解决方案适用于我的 .ics 文件

from icalendar import Calendar
from datetime import datetime
from dateutil.relativedelta import relativedelta


def read_from_cal():
    g = open('example.ics', 'rb')
    gcal = Calendar.from_ical(g.read())
    today = datetime.now()
    next_month =  today + relativedelta(months=1)
    for component in gcal.walk():
        if component.name == "VEVENT":
            summ = component.get('summary')
            start = component.get('dtstart').dt
            end = component.get('dtend').dt
            if isinstance(start, datetime):
                start = start.replace(tzinfo=None)
                if start <= next_month:
                    print("Worked (datetime)")
                    print(summ, start, end)
            else:
                # some events are stored as a date
                if start <= next_month.date():
                    print("Worked (date)")
                    print(summ, start, end)

read_from_cal()

由于日期时间比较，根据时间范围过滤 icalendar 事件

Filter icalendar events based on a time frame breaks because of datetime comparison

python

icalendar

datetime