TypeError: decode() argument 1 must be string, not None

[dvogel]

Traceback (most recent call last):
File "/projects/pressley/src/pressley/pressley/releases/management/commands/scrape_releases.py", line 73, in handle
    self.scrape_releases(source)
File "/projects/pressley/src/pressley/pressley/releases/management/commands/scrape_releases.py", line 47, in scrape_releases
    scrape_release(source, feed, entry, link)
File "/projects/pressley/src/pressley/pressley/releases/scrape.py", line 26, in scrape_release
    body = get_link_content(link)
File "/projects/pressley/src/pressley/pressley/releases/scrape.py", line 14, in get_link_content
    (title, body) = readability_extract(response.content)
File "/projects/pressley/src/pressley/pressley/util.py", line 25, in readability_extract
    title_text = unicode(lxml.html.fromstring(doc.short_title()).text_content())
File "/projects/pressley/virt/local/lib/python2.7/site-packages/readability/readability.py", line 124, in short_title
    return shorten_title(self._html(True))
File "/projects/pressley/virt/local/lib/python2.7/site-packages/readability/readability.py", line 104, in _html
    self.html = self._parse(self.input)
File "/projects/pressley/virt/local/lib/python2.7/site-packages/readability/readability.py", line 108, in _parse
    doc = build_doc(input)
File "/projects/pressley/virt/local/lib/python2.7/site-packages/readability/htmls.py", line 17, in build_doc
    page_unicode = page.decode(enc, 'replace')
TypeError: decode() argument 1 must be string, not None

[dvogel]

This is caused by PDF links like http://phx.corporate-ir.net/External.File?item=UGFyZW50SUQ9MTQ2MDYxfENoaWxkSUQ9LTF8VHlwZT0z&t=1. Need to check the response content-type header.