text: #!/usr/bin/env python
  
  # Search PyPI, the Python Package Index, and retrieve latest mechanize tarball.
  
  # This is just to demonstrate mechanize: You should use easy_install to do
  # this, not this silly script.
  
  import sys
  import os
  import urlparse
  
  import mechanize
  
  
  def download_mechanize():
      browser = mechanize.Browser(factory=mechanize.RobustFactory())
      browser.set_handle_robots(False)
  
      browser.open("http://pypi.python.org/pypi")
      browser.follow_link(text="Package Index", nr=0)
      browser.select_form(name="searchform")
      browser.form["term"] = "mechanize"
      browser.submit()
      browser.follow_link(text_regex="mechanize-?(.*)")
      link = browser.find_link(text_regex=r"\.tar\.gz")
      filename = os.path.basename(urlparse.urlsplit(link.url)[2])
      if os.path.exists(filename):
          sys.exit("%s already exists, not grabbing" % filename)
      browser.retrieve(link.url, filename)
  
  
  if __name__ == "__main__":
      download_mechanize()
  