Manipulating Google Calendar events using Python

README.md

Manipulating Google Calendar events from Python

Prerequisites

https://developers.google.com/calendar/api/quickstart/python#prerequisites

virtualenv venv
source venv/bin/activate
pip install --upgrade google-api-python-client google-auth-httplib2 google-auth-oauthlib
git clone https://gist.github.com/johananl/00fd55495062048661a12b399074aefc gist
cd gist

Listing events

python list-events.py 'Stupid meeting'

Output:

Stupid meeting qjc9gk50jv2sp8hd2tvt9c6i6g_R20211112T150000

Deleting events

python delete-event.py 'qjc9gk50jv2sp8hd2tvt9c6i6g_R20211112T150000'

delete-event.py

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

# If modifying these scopes, delete the file token.json.
SCOPES = [
    'https://www.googleapis.com/auth/calendar.readonly',
    'https://www.googleapis.com/auth/calendar.events',
]


def main():
    """Calls the Google Calendar API and deletes the event identified by the
    provided event ID.
    """

    if len(sys.argv) != 2:
        print(f'Usage: {sys.argv[0]} <event_id>')
        sys.exit(1)
    event_id = sys.argv[1]

    creds = None
    # The file token.json stores the user's access and refresh tokens, and is
    # created automatically when the authorization flow completes for the first
    # time.
    if os.path.exists('token.json'):
        creds = Credentials.from_authorized_user_file('token.json', SCOPES)
    # If there are no (valid) credentials available, let the user log in.
    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)
        # Save the credentials for the next run
        with open('token.json', 'w') as token:
            token.write(creds.to_json())

    service = build('calendar', 'v3', credentials=creds)

    res = service.events().delete(calendarId='primary', eventId=event_id).execute()
    print(res)


if __name__ == '__main__':
    main()

list-events.py

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

# If modifying these scopes, delete the file token.json.
SCOPES = [
    'https://www.googleapis.com/auth/calendar.readonly',
]


def main():
    """Calls the Google Calendar API and prints the descriptions and IDs of
    all events whose descriptions match the provided string.
    """

    if len(sys.argv) != 2:
        print(f'Usage: {sys.argv[0]} <expression>')
        sys.exit(1)
    expr = sys.argv[1]

    creds = None
    # The file token.json stores the user's access and refresh tokens, and is
    # created automatically when the authorization flow completes for the first
    # time.
    if os.path.exists('token.json'):
        creds = Credentials.from_authorized_user_file('token.json', SCOPES)
    # If there are no (valid) credentials available, let the user log in.
    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)
        # Save the credentials for the next run.
        with open('token.json', 'w') as token:
            token.write(creds.to_json())

    service = build('calendar', 'v3', credentials=creds)

    page_token = None
    while True:
        events = service.events().list(calendarId='primary', pageToken=page_token).execute()
        for event in events['items']:
            if 'summary' in event and expr in event['summary']:
                print(event['summary'], event['id'])
        page_token = events.get('nextPageToken')
        if not page_token:
            break


if __name__ == '__main__':
    main()