title: "no control matching name" in mechanize for python
body: <p>I am using mechanize for python and I am trying to search for an item in kijiji. Eventually my goal is for my program to search for an item, and using beautifulsoup, check whether or not someone has posted a new ad for my search term by scraping through the html source that comes from inputting a search term and e-mailing me if any new ads show up so that I can be the first one to respond. Below is my code, but I get an error:"no control matching name 'keywords". I am not sure what I am doing wrong. </p>
  
  <pre><code>import mechanize
  br = mechanize.Browser()  # allow everything to be written to
  br.set_handle_robots(False)   # ignore robots
  br.open("http://www.kijiji.ca/h-kitchener-waterloo")
  br.select_form(nr=0)
  br["keywords"] = "Nvidia"
  </code></pre>