Python iCalendar 解析数据并写入另一个 ics 文件

Question

我是 Python 的新手，我正在尝试使用 iCalendar python 库解析 .ics 文件。我想过滤 attendee 为 10059707 的事件并将其写入名为 example.ics 的新文件中。尝试打印时，它仍然打印 2 个事件，如下所示，但只将最后 1 个事件写入新文件

from datetime import datetime
from pytz import UTC # timezone


g = open('Calendar_元データ.ics','rb')
gcal = Calendar.from_ical(g.read())
for component in gcal.walk():
    if component.name == "VEVENT":
      DTSTAMP = component.get('DTSTAMP')
      UID = component.get('UID')
      ATTENDEE = component.get('ATTENDEE')
      CREATED = component.get('CREATED')
      SUMMARY = component.get('SUMMARY')
      DTSTART = component.get('DTSTART').dt    
      DTEND = component.get('DTEND').dt 
      LOCATION = component.get('LOCATION')    
      CLASS = component.get('CLASS')    
      DESCRIPTION = component.get('DESCRIPTION')    
      PRIORITY = component.get('PRIORITY')    
      ORGANIZER = component.get('ORGANIZER')    
      LAST_MODIFIED = component.get('LAST-MODIFIED')    
      X_NAVER_CATEGORY_ID = component.get('X-NAVER-CATEGORY-ID')    
      TRIGGER = component.get('TRIGGER')    
      ACTION = component.get('ACTION')    


      cal2 = Calendar()
      event2 = Event()

      if ATTENDEE is not None and '10059707' in ATTENDEE:
            
        print ("1:{} \n 2:{} \n 3:{} \n 4:{} \n 5:{} \n 6:{} \n 7:{} \n 8:{} \n 9:{} \n 10:{} \n 11:{} \n 12:{} \n 13:{}\n  14:{}\n 15:{}\n 16:{}\n".format(DTSTAMP,UID,ATTENDEE,CREATED,SUMMARY,DTSTART,DTEND,LOCATION,CLASS,DESCRIPTION,PRIORITY,ORGANIZER,LAST_MODIFIED,X_NAVER_CATEGORY_ID,TRIGGER,ACTION))
        print(ATTENDEE)

        for event3 in component.walk():
          if event3.name == "VEVENT":
            
            event2.add('DTSTAMP', DTSTAMP)
            event2.add('UID', UID)
            event2.add('attendee',vCalAddress(ATTENDEE))
            event2.add('CREATED', CREATED)
            event2.add('summary', "作業予定あり")
            event2.add('DTSTART', DTSTART)
            event2.add('DTEND', DTEND)
            event2.add('LOCATION', LOCATION)
            event2.add('CLASS', CLASS)
            event2.add('DESCRIPTION', SUMMARY + " " + DESCRIPTION)
            event2.add('PRIORITY', PRIORITY)
            event2.add('ORGANIZER',  vCalAddress(ORGANIZER))
            event2.add('LAST-MODIFIED', LAST_MODIFIED)
            event2.add('X-NAVER-CATEGORY-ID', X_NAVER_CATEGORY_ID)
            event2.add('ACTION', ACTION)

            cal2.add_component(event2)
            f = open('example.ics','wb')
            f.write(cal2.to_ical())
            f.close()


g.close()

[输出][1][在此处输入图像描述][2]

1:<icalendar.prop.vDDDTypes object at 0x0000025CE05284F0>
 2:20211011T034853Z-131@jvcweb02.wcal.nfra.io
 3:https://calendar.worksmobile.com/resources/resource/10059707/10059707@0e894991-6dce-4a3d-b84d-24b4935784fd 
 4:<icalendar.prop.vDDDTypes object at 0x0000025CE0528760>
 5:西村 テスト1 作業予約
 6:2021-10-01 13:00:00+09:00
 7:2021-10-01 14:00:00+09:00
 8:
 9:PUBLIC
 10:メモメモ
 11:0
 12:mailto:38dab8c1-99f7-40a2-964f-0f716d9c7d2b@jp1-groups.calendar.worksmobile.com
 13:<icalendar.prop.vDDDTypes object at 0x0000025CE05288E0>
  14:0
 15:None
 16:None

https://calendar.worksmobile.com/resources/resource/10059707/10059707@0e894991-6dce-4a3d-b84d-24b4935784fd
1:<icalendar.prop.vDDDTypes object at 0x0000025CE0528A30>
 2:20211011T034941Z-175@jvcweb02.wcal.nfra.io
 3:https://calendar.worksmobile.com/resources/resource/10059707/10059707@0e894991-6dce-4a3d-b84d-24b4935784fd
 4:<icalendar.prop.vDDDTypes object at 0x0000025CE0528CA0>
 5:西村テスト2 作業予定3
 6:2021-10-08 14:00:00+09:00
 7:2021-10-08 15:00:00+09:00
 8:
 9:PUBLIC
 10:メモメモ２
 11:0
 12:mailto:38dab8c1-99f7-40a2-964f-0f716d9c7d2b@jp1-groups.calendar.worksmobile.com
 13:<icalendar.prop.vDDDTypes object at 0x0000025CE0528E20>
  14:0
 15:None
 16:None

https://calendar.worksmobile.com/resources/resource/10059707/10059707@0e894991-6dce-4a3d-b84d-24b4935784fd````

Answer 1

您正在以写入模式打开 example.ics 文件，这会覆盖现有内容（如果有）并写入新内容，这证明了为什么您只获得一个条目，我想该条目应该是循环的最后一次迭代。

一种解决方案是使用 a 或 a+ 以附加模式打开文件。

另一种解决方案可能只是在循环外打开文件 - 在 for event3 in component.walk(): 行之前。这样，您将在循环中保持文件打开，并写入所有需要写入的内容。然后在循环结束时关闭文件（也在循环外）。

Python iCalendar 解析数据并写入另一个 ics 文件

Python iCalendar parse data and write to another ics file

python

icalendar