Log in to google account and fetch unread emails using python3 and BeautifulSoup.

gLogin.py

from bs4 import BeautifulSoup
import requests

GLOGIN_URL = 'https://mail.google.com'
GAUTH_URL = 'https://accounts.google.com/ServiceLoginAuth'
GMAIL_URL = 'https://mail.google.com/mail/u/0/'

class GoogleLogin():
    def __init__(self, username, password):
        self.session = requests.session()
        self.username = username
        self.password = password
        self.loggedIn = False

    def __html_doc(self, url):
        return self.session.get(url).content

    def __html_parser(self, html_doc):
        return BeautifulSoup(html_doc, "html.parser")

    def get_login_params(self, soup):
        # Prepare login params
        login_params = {
            'Email': self.username,
            'Passwd': self.password
        }
        for inp in soup.select("#gaia_loginform input[name]"):
            if inp["name"] not in login_params:
                login_params[inp["name"]] = inp["value"]

        return login_params

    def perform_glogin(self):
        # perform google login

        html_doc = self.__html_doc(url=GLOGIN_URL)
        soup = self.__html_parser(html_doc=html_doc)
        login_params = self.get_login_params(soup=soup)

        # Login to google account
        response = self.session.post(GAUTH_URL, login_params)

        if response.url == GMAIL_URL:
            self.loggedIn = True

        else:
             print("Please Enter valid username and password.")
             exit()


    def get_mails(self):
        # Go to Gmail
        if not self.loggedIn:
            self.perform_glogin()

        html_doc = self.__html_doc(url=GMAIL_URL)
        data = soup = self.__html_parser(html_doc=html_doc)

        # Go to Gmail in basic HTML:

        form = data.find("form")
        action = form.get('action')
        post_url = GMAIL_URL + action
        html = self.session.get(post_url)
        gmail_doc = BeautifulSoup(html.text, 'html.parser')
        return gmail_doc


    def get_unread_mails(self):
        # fetch unread mails
        gmail_doc = self.get_mails()
        form = gmail_doc.find_all("form", attrs={"name": "f"})[0]
        mail_data = form.select('table.th td b')
        unread_mail_list = [{'from': mail_data[i].text, 'sub': mail_data[i + 1].text, 'date': mail_data[i + 2].text, }
                            for i in range(0, len(mail_data), 3)]

        for mail in unread_mail_list:
            print(mail['from'] + '::' + mail['sub'] + '::' + mail['date'])


if __name__ == '__main__':
    Glogin_obj = GoogleLogin('your_username', 'your_password')
    Glogin_obj.get_unread_mails()