And just to be super clear, this is the code. Hard from scary or obfuscated:

  html = urllib_request.urlopen(
  "https://www.pytosquatting.org/pingback/pypi/{}/".format(package_name)
  )
  raise Exception(
    "This is a bogus package that should not be installed\n\n"
    "Please read https://www.pytosquatting.org"
  )