title: How to control the download of files with Selenium + Python bindings in Chrome
body: <p>Where can I find the documentation that describes the options I can use with Selenium and Chrome web browser? I want to open a link in a web browser (to get credential) but not to download the corresponding file (.pdf or .tiff or .jpeg). I am using Python 2.7, selenium 3.0.1 and Chrome version 54.0.2840.99 (and chromedriver.exe) on Windows 7 Laptop.</p>
  
  <pre><code># Chrome web browser.
  options = webdriver.ChromeOptions()
  options.add_argument('--ignore-certificate-errors')  
  #options.add_argument('--disable-download-notification') #doesn't seems to work 
  #options.add_experimental_option("prefs", {"download.default_directory","C:\Users\xxx\downloads\Test"}) # doesn't work
  #options.add_experimental_option("prefs", {"download.prompt_for_download": False}) # doesn't seems to work
  #options.add_experimental_option("prefs", {'profile.default_content_settings': {'images': 2}})# this will disable image loading in the browser
  options.add_argument("user-agent="+user_agent_profile)
  driver_main = webdriver.Chrome(chrome_options=options)
  
  # Opening the web application portail.
  driver_main.get("https://my_link")
  </code></pre>
  
  <p>I found many discussions on this topic but none of the solution works. For example:</p>
  
  <pre><code>add_experimental_option("prefs", {"download.default_directory","C:\Users\xxx\downloads\Test"})
  </code></pre>
  
  <p>doesn't work for me.</p>
  
  <p>Same for:</p>
  
  <pre><code>add_experimental_option("prefs", {"download.prompt_for_download": False})
  </code></pre>
  
  <p>(I also try with "false").</p>
  
  <p>While:</p>
  
  <pre><code>add_argument("user-agent="+user_agent_profile)
  </code></pre>
  
  <p>Seems to work!</p>
  
  <p>I am not sure to understand what is wrong</p>
  
  <p>The issue I got is that, it starts to download the file each time I open a link with name file(1) file(2) .... file(99) then starting at 100 it opens a popup window "Save As". So I would like to either don't download the file at all or be able to move it in a specific folder in the "Recycle Bin".</p>
  
  <p>How do I find which options could be I used with add_argument and add_argument? I tried to look at Chrome://about/ but I couldn't see a direct correspondence.</p>
  
  <p>Thanks a lot.</p>
  
  <p>Cheers.</p>
  
  <p>Fabien.</p>