Google Calendar, a very popular Google product millions of people use to track their events. Using Google Calendar API, we can automate or integrate Google Calendar with different apps for differnet purposes.

You can use the Google Calendar API to find and view public calendar events. If you’re authorized, you can also access and modify private calendars and events on those calendars.




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Authentication

Every request your application sends to the Drive API must include an authorization token. The token also identifies your application to Google.

Your application must use OAuth 2.0 to authorize requests. No other authorization protocols are supported.

Step 1. Enable Google Calendar API service

  1. Log in to your Google Cloud Platform,
  2. Select your project
  3. Enable Google Drive API service

If this is your first time working with Google API service, to learn how to create your first Google Project.

Step 2. Install Python Library

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

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Google.py

import pickle
import os
from google_auth_oauthlib.flow import Flow, InstalledAppFlow
from googleapiclient.discovery import build
from googleapiclient.http import MediaFileUpload, MediaIoBaseDownload
from google.auth.transport.requests import Request


def Create_Service(client_secret_file, api_name, api_version, *scopes):
    print(client_secret_file, api_name, api_version, scopes, sep='-')
    CLIENT_SECRET_FILE = client_secret_file
    API_SERVICE_NAME = api_name
    API_VERSION = api_version
    SCOPES = [scope for scope in scopes[0]]
    print(SCOPES)

    cred = None

    pickle_file = f'token_{API_SERVICE_NAME}_{API_VERSION}.pickle'
    # print(pickle_file)

    if os.path.exists(pickle_file):
        with open(pickle_file, 'rb') as token:
            cred = pickle.load(token)

    if not cred or not cred.valid:
        if cred and cred.expired and cred.refresh_token:
            cred.refresh(Request())
        else:
            flow = InstalledAppFlow.from_client_secrets_file(CLIENT_SECRET_FILE, SCOPES)
            cred = flow.run_local_server()

        with open(pickle_file, 'wb') as token:
            pickle.dump(cred, token)

    try:
        service = build(API_SERVICE_NAME, API_VERSION, credentials=cred)
        print(API_SERVICE_NAME, 'service created successfully')
        return service
    except Exception as e:
        print('Unable to connect.')
        print(e)
        return None

def convert_to_RFC_datetime(year=1900, month=1, day=1, hour=0, minute=0):
    dt = datetime.datetime(year, month, day, hour, minute, 0).isoformat() + 'Z'
    return dt