Develop Reference

Open browser with selenium without creating new instance

I am automating a form-filler using selenium, however the issue is the user needs to be logged in to their google account. Selenium is opening up a new browser instance where the user is not logged in. I cannot automate the log in process due to 2 factor authentication.
So far I've found
import webbrowser
webbrowser.open('www.google.com', new = 2)
which will open the window the way I want with the user logged in, however I am unable to interact with the page unlike selenium. Is there a way I can get selenium to open a window like webbrowser? Or is there a way to interact with the page with webbrowser? I have checked the docs of both and not seen an answer to this

You don't need to make the user log in again to their user account. You can use the same chrome profile that you have for your browser. This will enabled you to use all your accounts from chrome without making them log explicitly.
Here is how you can do this :
First get the user chrome profile path
Mine was : C:\Users\hpoddar\AppData\Local\Google\Chrome\User Data
If you have multiple profiles you might need to get the Profile id for your chrome google account as well.
from selenium.webdriver.chrome.options import Options
from selenium.webdriver.chrome.service import Service
from selenium.webdriver.common.by import By
from selenium import webdriver
chrome_path = r"C:\Users\hpoddar\Desktop\Tools\chromedriver_win32\chromedriver.exe"
options = webdriver.ChromeOptions()
options.add_argument(r"--user-data-dir=C:\Users\hpoddar\AppData\Local\Google\Chrome\User Data")
# Specify this if multiple profiles in chrome
# options.add_argument('--profile-directory=Profile 1')
s = Service(chrome_path)
driver = webdriver.Chrome(service=s, options=options)
driver.get("https://www.google.co.in")

Selenium Chromedriver doesn't keep me logged in in some websites

I'm using Selenium and ChromeDriver to scrape data from a website.
I need to keep my account logged in after closing the Driver: for this purpose I use every time the default Chrome profile.
Here you can see my code:
from selenium import webdriver
from selenium.webdriver.chrome.options import Options
urlpage = 'https://example.com/'
options = webdriver.ChromeOptions()
options.add_argument("user-data-dir=C:\\Users\\MyName\\AppData\\Local\\Google\\Chrome\\User Data")
driver = webdriver.Chrome(options=options)
driver.get(urlpage)
The problem is that for some websites (e.g. https://projecteuler.net/) it works, so I'm logged in also the following session, but for other (like https://www.fundraiso.ch, the one I need) it doesn't, although in the "normal" browser I'm still logged in after I close the window.
Does anyone know how to fix this problem?
EDIT:
I didn't mention that I can't automate the login because the website has a maximum login number, and if I breach it the website will block my account.

How do I save a whatsapp web session in selenium?

I am trying to acces whatsapp web with python without having to scan the QR code everytime I restart the program (because in my normal browser I also dont have to do that). But how can I do that? Where is the data stored that tells whatsapp web to connect to my phone? And how do I save this data and send it to the browser when I rerun the code?
I already tried this because someone told me I should save the cookies:
from selenium import webdriver
import time
browser = None
cookies = None
def init():
browser = webdriver.Firefox(executable_path=r"C:/Users/Pascal/Desktop/geckodriver.exe")
browser.get("https://web.whatsapp.com/")
time.sleep(5) # in this time I scanned the QR to see if there are cookies
cookies = browser.get_cookies()
print(len(cookies))
print(cookies)
init()
Unfortunately there were no cookies..
The output was 0 and [].
How do I fix this probblem?

As mentioned in the answer to this question, pass your Chrome profile to the Chromedriver in order to avoid this problem. You can do it like this:
from selenium import webdriver
from selenium.webdriver.chrome.options import Options
options = webdriver.ChromeOptions()
options.add_argument("user-data-dir=C:\\Path") #Path to your chrome profile
driver = webdriver.Chrome(executable_path="C:\\Users\\chromedriver.exe", options=options)

This one works for me, I just created a folder, on the home directory of the script and a little modifications and it works perfectly.
###########
E_PROFILE_PATH = "user-data-dir=C:\Users\Denoh\Documents\Project\WhatBOts\SessionSaver"
##################
This is the Config File that I will import later
##################
The main script starts here
##################
from selenium import webdriver
from config import E_PROFILE_PATH
options = webdriver.ChromeOptions()
options.add_argument(E_PROFILE_PATH)
driver = webdriver.Chrome(executable_path='chromedriver_win32_86.0.4240.22\chromedriver.exe', options=options)
driver.get('https://web.whatsapp.com/')

How to handle Google Authenticator with Selenium

I need to download a massive amount of excel-files (estimated: 500 - 1000) from sellercentral.amazon.de. Manually downloading is not an option, as every download needs several clicks until the excel pops up.
Since amazon cannot provide me a simple xml with its structure, I decided to automate this on my own. The first thing coming to mind was Selenium and Firefox.
The Problem:
A login to sellercentral is required, as well as 2-factor-authentication (2FA). So if I login once, i can open another tab, enter sellercentral.amazon.de and am instantly logged in.
I can even open another instance of the browser, and be instantly logged in there too. They might be using session-cookies. The target URL to "scrape" is https://sellercentral.amazon.de/listing/download?ref=ag_dnldinv_apvu_newapvu .
But when I open the URL from my python-script with selenium webdrive, a new instance of the browser is launched, in which I am not logged in. Even though, there are instances of firefox running at the same time, in which I am logged in. So I guess the instances launched by selenium are somewhat different.
What I've tried:
I tried setting a timedelay after the first .get() (to open site), then I'll manually login, and after that redoing the .get(), which makes the script go on for forever.
from selenium import webdriver
import time
browser = webdriver.Firefox()
# Wait for website to fire onload event
browser.get("https://sellercentral.amazon.de/listing/download?ref=ag_dnldinv_apvu_newapvu")
time.sleep(30000)
browser.get("https://sellercentral.amazon.de/listing/download?ref=ag_dnldinv_apvu_newapvu")
elements = browser.find_elements_by_tag_name("browse-node-component")
print(str(elements))
What am I looking for?
Need solution to use the two factor authentication token from google authenticator.
I want the selenium to be opened up as a tab in the existing instance of the firefox browser, where I will have already logged in beforehand. Therefore no login (should be) required and the "scraping" and downloading can be done.
If there's no direct way, maybe someone comes up with a workaround?
I know selenium cannot download the files itself, as the popups are no longer part of the browser. I'll fix that when I get there.
Important Side-Notes:
Firefox is not a given! I'll gladly accept a solution for any browser.

Here is the code that will read the google authenticator token and used in the login. Used js to open the new tab.
Install pyotp package before running the test code.
pip install pyotp
Test code:
from pyotp import *
from selenium import webdriver
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.by import By
driver = webdriver.Firefox()
driver.get("https://sellercentral.amazon.de/listing/download?ref=ag_dnldinv_apvu_newapvu")
wait = WebDriverWait(driver,10)
# enter the email
email = wait.until(EC.presence_of_element_located((By.XPATH, "//input[#name='email']")))
email.send_keys("email goes here")
# enter password
driver.find_element_by_xpath("//input[#name='password']").send_keys("password goes here")
# click on signin button
driver.find_element_by_xpath("//input[#id='signInSubmit']").click()
#wait for the 2FA feild to display
authField = wait.until(EC.presence_of_element_located((By.XPATH, "xpath goes here")))
# get the token from google authenticator
totp = TOTP("secret goes here")
token = totp.now()
print (token)
# enter the token in the UI
authField.send_keys(token)
# click on the button to complete 2FA
driver.find_element_by_xpath("xpath of the button goes here").click()
# now open new tab
driver.execute_script("""window.open("https://sellercentral.amazon.de/listing/download?ref=ag_dnldinv_apvu_newapvu")""")
# continue with your logic from here

Use and retain the information of the current login session with Selenium

I am automating certain tasks using Web Browser with Selenium. Suppose I open a webpage say Facebook or Quora using webdriver, the page that opened asks for the username and password again even though I am still logged in.
from selenium import webdriver
b = webdriver.Chrome()
b.get("https://www.quora.com/")
I want the webdriver to use and retain the information of the current session so that I am able to land on my profile without having to enter my username and password again. How can I achieve this? Thanks.
Edit 1 : I tried pointing it to the chrome user data, but isn't working.
from selenium import webdriver
from selenium.webdriver.chrome.options import Options
chrome_option = Options()
chrome_option.add_argument('user-data-dir=~/Library/Application Support/Google/Chrome/Default')
b = webdriver.Chrome(executable_path="/Users/mymac/Downloads/chromedriver",chrome_options=chrome_option)
b.get("https://www.quora.com/")