title: Selenium + Google Colab error: 'chromedriver' executable needs to be in PATH
body: <p>I'm using the code offered by @korakot-chaovavanich in this thread <a href="https://stackoverflow.com/questions/55085072/how-to-use-selenium-on-colaboratory-google">How to use Selenium on Colaboratory Google?</a>. I really need to have a solution to make it work on Google Colab.</p>
  
  <pre><code># install chromium, its driver, and selenium
  !apt install chromium-chromedriver
  !cp /usr/lib/chromium-browser/chromedriver /usr/bin
  !pip install selenium
  # set options to be headless, ..
  from selenium import webdriver
  options = webdriver.ChromeOptions()
  options.add_argument('--headless')
  options.add_argument('--no-sandbox')
  options.add_argument('--disable-dev-shm-usage')
  # open it, go to a website, and get results
  wd = webdriver.Chrome('chromedriver',options=options)
  wd.get("https://www.google.com")
  print(wd.page_source)  # results
  </code></pre>
  
  <p>I've tested in Google Colab, but I have no idea why it fails to work. I tried to look under /usr/lib but I couldn't find any "chromium-browser" folder. I can't figure where chromedriver is being installed to in Google Colab.</p>
  
  <p>Error message from executing this code in Google Colab:</p>
  
  <pre><code>Reading package lists... Done
  Building dependency tree       
  Reading state information... Done
  The following package was automatically installed and is no longer required:
    libnvidia-common-410
  Use 'apt autoremove' to remove it.
  The following additional packages will be installed:
    chromium-browser chromium-browser-l10n chromium-codecs-ffmpeg-extra
  Suggested packages:
    webaccounts-chromium-extension unity-chromium-extension adobe-flashplugin
  The following NEW packages will be installed:
    chromium-browser chromium-browser-l10n chromium-chromedriver
    chromium-codecs-ffmpeg-extra
  0 upgraded, 4 newly installed, 0 to remove and 16 not upgraded.
  Need to get 68.5 MB of archives.
  After this operation, 251 MB of additional disk space will be used.
  Ign:1 http://archive.ubuntu.com/ubuntu bionic-updates/universe amd64 chromium-codecs-ffmpeg-extra amd64 74.0.3729.169-0ubuntu0.18.04.1
  Ign:2 http://archive.ubuntu.com/ubuntu bionic-updates/universe amd64 chromium-browser amd64 74.0.3729.169-0ubuntu0.18.04.1
  Ign:3 http://archive.ubuntu.com/ubuntu bionic-updates/universe amd64 chromium-browser-l10n all 74.0.3729.169-0ubuntu0.18.04.1
  Ign:4 http://archive.ubuntu.com/ubuntu bionic-updates/universe amd64 chromium-chromedriver amd64 74.0.3729.169-0ubuntu0.18.04.1
  Err:1 http://security.ubuntu.com/ubuntu bionic-updates/universe amd64 chromium-codecs-ffmpeg-extra amd64 74.0.3729.169-0ubuntu0.18.04.1
    404  Not Found [IP: 91.189.88.31 80]
  Err:2 http://security.ubuntu.com/ubuntu bionic-updates/universe amd64 chromium-browser amd64 74.0.3729.169-0ubuntu0.18.04.1
    404  Not Found [IP: 91.189.88.31 80]
  Err:3 http://security.ubuntu.com/ubuntu bionic-updates/universe amd64 chromium-browser-l10n all 74.0.3729.169-0ubuntu0.18.04.1
    404  Not Found [IP: 91.189.88.31 80]
  Err:4 http://security.ubuntu.com/ubuntu bionic-updates/universe amd64 chromium-chromedriver amd64 74.0.3729.169-0ubuntu0.18.04.1
    404  Not Found [IP: 91.189.88.31 80]
  E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/universe/c/chromium-browser/chromium-codecs-ffmpeg-extra_74.0.3729.169-0ubuntu0.18.04.1_amd64.deb  404  Not Found [IP: 91.189.88.31 80]
  E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/universe/c/chromium-browser/chromium-browser_74.0.3729.169-0ubuntu0.18.04.1_amd64.deb  404  Not Found [IP: 91.189.88.31 80]
  E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/universe/c/chromium-browser/chromium-browser-l10n_74.0.3729.169-0ubuntu0.18.04.1_all.deb  404  Not Found [IP: 91.189.88.31 80]
  E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/universe/c/chromium-browser/chromium-chromedriver_74.0.3729.169-0ubuntu0.18.04.1_amd64.deb  404  Not Found [IP: 91.189.88.31 80]
  E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?
  cp: cannot stat '/usr/lib/chromium-browser/chromedriver': No such file or directory
  Requirement already satisfied: selenium in /usr/local/lib/python3.6/dist-packages (3.141.0)
  Requirement already satisfied: urllib3 in /usr/local/lib/python3.6/dist-packages (from selenium) (1.24.3)
  ---------------------------------------------------------------------------
  FileNotFoundError                         Traceback (most recent call last)
  /usr/local/lib/python3.6/dist-packages/selenium/webdriver/common/service.py in start(self)
       75                                             stderr=self.log_file,
  ---&gt; 76                                             stdin=PIPE)
       77         except TypeError:
  
  4 frames
  FileNotFoundError: [Errno 2] No such file or directory: 'chromedriver': 'chromedriver'
  
  During handling of the above exception, another exception occurred:
  
  WebDriverException                        Traceback (most recent call last)
  /usr/local/lib/python3.6/dist-packages/selenium/webdriver/common/service.py in start(self)
       81                 raise WebDriverException(
       82                     "'%s' executable needs to be in PATH. %s" % (
  ---&gt; 83                         os.path.basename(self.path), self.start_error_message)
       84                 )
       85             elif err.errno == errno.EACCES:
  
  WebDriverException: Message: 'chromedriver' executable needs to be in PATH. Please see https://sites.google.com/a/chromium.org/chromedriver/home
  </code></pre>