Selenium web scraping on streamlit cloud

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Here’s a minimal example of running Selenium on Streamlit Cloud:

import streamlit as st
import os, sys

@st.experimental_singleton
def installff():
  os.system('sbase install geckodriver')
  os.system('ln -s /home/appuser/venv/lib/python3.7/site-packages/seleniumbase/drivers/geckodriver /home/appuser/venv/bin/geckodriver')

_ = installff()
from selenium import webdriver
from selenium.webdriver import FirefoxOptions
opts = FirefoxOptions()
opts.add_argument("--headless")
browser = webdriver.Firefox(options=opts)

browser.get('http://example.com')
st.write(browser.page_source)

The only Python requirement is installing seleniumbase; the only package required for packages.txt is firefox-esr.

If you absolutely have to use Chrome, you should be able to specify chrome in the sbase... line, and instead of firefox-esr, you can install chromium.

I will eventually make a public example of this, since it seems to be tripping a few people up.

Best,
Randy

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