Jie Jenn - gmail api

01

 Go to the Gmail api homepage, and click on Guides
https://developers.google.com/gmail/api/guides

 Here, the methods, classes, and use cases are described

02

Scopes

 Go to,
Authentification & authorization → Choose scopes
https://developers.google.com/gmail/api/auth/scopes

03

Common scopes are,

https://www.googleapis.com/auth/gmail.labels

and,

https://www.googleapis.com/auth/gmail.settings.basic

04

https://mail.google.com/

Gives you full permission to gmail

01

Go to Guides →Gmail API →Quickstarts → Python then,
https://developers.google.com/gmail/api/quickstart/python

02

Instructions for setup and install

01

Go to google cloud platform,
https://console.cloud.google.com/welcome?authuser=0&organizationId=0

02

Click the Project drop menu and then click NEW PROJECT

03

Name and Create

01

In the project, go to APIs & Services → Library
https://console.cloud.google.com/apis/library?authuser=0&project=gmail-api-jiejenn-

02

Search for Gmail Api

03

Click Gmail Api

04

Click Enable or MANAGE

01

Go to Credentials page
https://console.cloud.google.com/apis/credentials?authuser=0&project=gmail-api-jiejenn-408314

02

Click CREATE CREDENTIALS and select
OAuth Client ID

Review Varisty tutors Page Vasirty Tutors Session 1(link not working yet)

03

Click,
CONFIGURE CONSENT SCREEN

06

Enter the full permission scope

https://mail.google.com/

07

(** Not working) trying to add email here but says it is an ineligble account,

Click SAVE AND CONTINUE

08

Add your email as a Test User and then hit SAVE AND CONTINUE

Rememeber add

tstudystuff@gmail too

Never mind, doens't work just do every in this lesson for tstudystuff

01

Go to Credentials then, OAuth Client Id

02

Chooose Desktop App

then hit Save and Continue

03

Download the json file to the same directory as the project

01

Go to Corey Schafer 01-flask for review, and install a venv in the directory of the project, and install the libraries

python -m venv venv

./venv/bin/activate

02

If ./venv/bin/activate Does Not Work run

source ./venv/bin/activate

03

I can't figure out how to deactivate the venv

source venv/bin/deactivate
                                

04

Go to https://developers.google.com/gmail/api/quickstart/python , and install the client libraries

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

01

Go to https://learndataanalysis.org/google-py-file-source-code/ and make sure you install,

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

Into your venv

0

do the following changes, the

print(dir(service))

Will print all the methods an classes in the api

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/gmail.readonly"]


def main():
    creds = None
    if os.path.exists("token.json"):
        creds = Credentials.from_authorized_user_file("token.json", SCOPES)
    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(
            "client_secret.json", SCOPES
        )
        creds = flow.run_local_server(port=0)
    with open("token.json", "w") as token:
        token.write(creds.to_json())
    try:
        service = build("gmail", "v1", credentials=creds)
        print(dir(service))
    except HttpError as error:
        print(f"An error occurred: {error}")

if __name__ == "__main__":
    main()
                                
                                

0a

We can do the same and see the methods for results which is service.users().message().list(userId='me').execute()

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/gmail.readonly"]


def main():
    creds = None
    if os.path.exists("token.json"):
        creds = Credentials.from_authorized_user_file("token.json", SCOPES)
    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(
            "client_secret.json", SCOPES
        )
        creds = flow.run_local_server(port=0)
    with open("token.json", "w") as token:
        token.write(creds.to_json())
    try:
        service = build("gmail", "v1", credentials=creds)
        print(dir(service))
        results = service.users().messages().list(userId="me").execute()
        print(dir(results))
    except HttpError as error:
        print(f"An error occurred: {error}")

if __name__ == "__main__":
    main()
                                
                                

03

Place the variables into the create_service function with the scope

https://mail.google.com/
                                

scopes can be founed at
https://developers.google.com/gmail/api/auth/scopes

0b

Use the get() function you can see from dir(results) to get the messages from results

messages = results.get('messages',[])

You can see the ids for each message