如何使用 Python 中的 selenium 将值永久保存在本地存储中

Question

I am trying to save values in Local storage so that I'm able to access them again after I close and reopen a new session with selenium. I'm able to save and access values from the same session but when I close the browser then try to access the stored variable, it shows as null:

from selenium import webdriver

driver = webdriver.Chrome()
driver.get("https://www.google.com")
driver.execute_script("localStorage.setItem('testkey', 'myValue');")
driver.execute_script("alert (localStorage.getItem('testkey'));")

The alert occurs as expected when I run the above but when I close and reopen the browser and run the above code after commenting out the setItem line, the alert shows null. How can I get this working, or is there any other way I can persist values that are set from javascript?

Answer 1

You are using some javascript code to store the value with driver instance . So once you close/quit the browser. session get terminated that's why same code won't work in this case with new driver instance.

Use environment in Python to store and access the variable throughout the execution

driver.execute_script("localStorage.setItem('testkey', 'myValue');")
driver.execute_script("alert (localStorage.getItem('testkey'));")

value = driver.switch_to.alert.text

# Set environment variables
os.environ['keyword'] = value

# get the environment variable
print(os.getenv('keyword'))

import below module:

import os

Answer 2

Oh actually this is dead simple I finally figured it out.

from selenium import webdriver
import json

driver = webdriver.Chrome()
driver.get("https://www.google.com")
driver.execute_script("localStorage.setItem('testkey', 'myValue');")
myvariable = driver.execute_script("return localStorage.getItem('testkey');")

Then from python you can store the value anywhere you want for easy retrieval next time.

dicti = {'storage':myvariable}
json.dump(dicti, open("stored.json","w"))