Most of it is also generated code (including docs) which doesn't help the user experience. The fact that Google API Python client library includes functions for *all* Google APIs makes it very complicated and hard to navigate. If you decide to change scopes at some point, make sure to delete token.json, because the application will need to be re-authorized. When you run this authentication code again, the token will be used (assuming it's not expired), so you won't have to approve it in browser again. Here you should use the test user you specified during OAuth screen setup.Īfter accepting the scopes that application requests, the token.json file will be created. This will open browser tab asking you to login. If the file's not present, we let user login via the OAuth flow. If the file is there, but credentials that it stores are not valid, we try to refresh them. This file is automatically created when the authorization flow completes for the first time. Next, we check for presence of token.json which is a file that stores the user's access and refresh tokens. Here we choose gmail.readonly for testing purposes. Choose all scopes you need and add them to the SCOPES list. To find out which ones you need, search for "scope" in particular API docs page, the first result should lead to page like e.g. We start by defining access scopes for accessing the APIs. If creds and creds.expired and creds.refresh_token:įlow = om_client_secrets_file("credentials.json", SCOPES) First thing we need to do is authenticate and get user consent:įrom import Requestįrom import Credentialsįrom google_auth_oauthlib.flow import InstalledAppFlowĬreds = om_authorized_user_file("token.json", SCOPES) Now we're ready to start writing some Python code. We need 2 of them, one for authentication and one for the actual Google APIs: With that done, we now have project with API enabled and OAuth application/consent screen that will allow us to authorize access to the APIs and scopes we chose.įinally, we need to install Python client libraries to use the APIs. You will be presented with client ID and client secret - click Download JSON button to save them with name credentials.json - we will use them in a moment. Next we will choose Application type to be Desktop app and we give it some name: Now we need to go back to credentials page click Create Credentials and choose OAuth client ID. In summary, the configuration should look something like this: ![]() In the Test users section, click Add users and add email address(es) of Google account(s) that you will use for testing (you might need to create extra Google account for this), click Save and continue again. After that you can click Save and continue, skip the Scopes section. In the next screen you will specify App name, User support email and email address under Developer contact information. You will be asked to configure OAuth consent screen, go ahead and create it - in the first screen you be asked to select user type, we will choose External. To create OAuth credentials, go to credentials page, click Create Credentials and choose OAuth client ID. Therefore, only option for us is to use OAuth credentials. Gmail, Sheets, Docs.) allow it only if you have your own Workspace with domain-wide access delegation. ![]() Service account credentials however, don't work with many APIs - for example Photos API doesn't support it and all Google Workspace (GSuite) APIs (e.g. The preferable credentials type for us would be service account as it's suitable for automation - that is - access without user interaction. Most of them are suited for applications that require/ask for user consent, such as client-side (desktop) or Android/iOS apps. There are couple different types of credentials based on the type of application. The ones we will play with in next sections include Gmail, Drive and Forms, but you choose what you want to enable.ĪPI is now ready to be used, but we need credentials to access it. You can find all the available APIs in API Library. Next, we need to enable the API(s) for this project. ![]() After a few seconds you will see new project in the list. Alternatively, you can do it also via CLI, using gcloud projects create $PROJECT_ID. To do that, head over to Cloud Resource Manager and click on Create Project. To be able to access the API, we will need to first create a project in Google Cloud. In this article we will explore all of these concepts and also get our hands dirty with some of the above-mentioned APIs to learn about all the cool things you can do with any and all of Google's APIs. All of these share the same concepts like authorization, pagination or media uploads/downloads. Google has literally hundreds of APIs, including ones for Gmail, Drive, Maps, Translation, Analytics and more.
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