Pythonを使ってGoogle Calendarの予定を取得する方法

pip install --upgrade google-api-python-client google-auth-httplib2 google-auth-oauthlib

from __future__ import print_function
import datetime
import os.path
from google.auth.transport.requests import Request
from google.oauth2.credentials import Credentials
from google_auth_oauthlib.flow import InstalledAppFlow
from googleapiclient.discovery import build
from googleapiclient.errors import HttpError

SCOPES = ['https://www.googleapis.com/auth/calendar.readonly']

def main():
    creds = None
    
    # token.pickleファイルにユーザーアクセストークンとリフレッシュトークンが保存され、
    # 認証が初めてのときにtoken.pickleは自動的に作成される
    if os.path.exists('token.json'):
        creds = Credentials.from_authorized_user_file('token.json', SCOPES)
        
     # 資格情報が有効でなければ、ユーザーログインさせる
    if not creds or not creds.valid:
        if creds and creds.expired and creds.refresh_token:
            creds.refresh(Request())
        else:
            flow = InstalledAppFlow.from_client_secrets_file(
                'credentials.json', SCOPES)
            creds = flow.run_local_server(port=0)
            
        # 次回実行時には認証が省略される
        with open('token.json', 'w') as token:
            token.write(creds.to_json())

    try:
        service = build('calendar', 'v3', credentials=creds)
        # Calendar情報の取得
        now = datetime.datetime.now().isoformat() + 'Z'
        print('現在時刻から先の予定を10個取得')
        events_result = service.events().list(calendarId='******@group.calendar.google.com', timeMin=now,
                                              maxResults=10, singleEvents=True,
                                              orderBy='startTime').execute()
        events = events_result.get('items', [])
        if not events:
            print('予定が1つもありませんでした')
            return
        # 取得したカレンダー情報を表示
        for event in events:
            start = event['start'].get('dateTime', event['start'].get('date'))
            print(start, event['summary'], event['location'], event['description'])
            
        
    except HttpError as error:
        print('An error occurred: %s' % error)

if __name__ == '__main__':
    main()

events_result = service.events().list(calendarId='******@group.calendar.google.com', timeMin=now,
                                      maxResults=10, singleEvents=True,
                                      orderBy='startTime').execute()
events = events_result.get('items', [])

for event in events:
　　　　start = event['start'].get('dateTime', event['start'].get('date'))
       print(start, event['summary'], event['location'], event['description'])

2023-05-23T12:00:00+09:00 予定2 新宿 ランチ
2023-05-26T20:00:00+09:00 予定3 六本木 ディナー
2023-05-31T23:00:00+09:00 予定4 浅草 ジム