------------------------------------------------------------------------
zip-test.py:

import zipfile
zf = zipfile.ZipFile('django-compressor-1.1.2.pybundle', 'r')
zf.debug=3

------------------------------------------------------------------------
$ python zip-test.py

Traceback (most recent call last):
  File "zip-test.py", line 3, in <module>
    zf = zipfile.ZipFile('django-compressor-1.1.2.pybundle', 'r')
  File "/usr/local/python/lib/python2.6/zipfile.py", line 696, in __init__
    self._GetContents()
  File "/usr/local/python/lib/python2.6/zipfile.py", line 716, in _GetContents
    self._RealGetContents()
  File "/usr/local/python/lib/python2.6/zipfile.py", line 728, in _RealGetContents
    raise BadZipfile, "File is not a zip file"
zipfile.BadZipfile: File is not a zip file

------------------------------------------------------------------------
$ pip install django-compressor-1.1.2.pybundle
Unpacking ./django-compressor-1.1.2.pybundle
Exception:
Traceback (most recent call last):
  File "/var/www/sites/virtualenvs_python/venv/lib/python2.6/site-packages/pip/basecommand.py", line 104, in main
    status = self.run(options, args)
  File "/var/www/sites/virtualenvs_python/venv/lib/python2.6/site-packages/pip/commands/install.py", line 245, in run
    requirement_set.prepare_files(finder, force_root_egg_info=self.bundle, bundle=self.bundle)
  File "/var/www/sites/virtualenvs_python/venv/lib/python2.6/site-packages/pip/req.py", line 985, in prepare_files
    self.unpack_url(url, location, self.is_download)
  File "/var/www/sites/virtualenvs_python/venv/lib/python2.6/site-packages/pip/req.py", line 1105, in unpack_url
    return unpack_file_url(link, loc)
  File "/var/www/sites/virtualenvs_python/venv/lib/python2.6/site-packages/pip/download.py", line 306, in unpack_file_url
    unpack_file(source, location, content_type, link)
  File "/var/www/sites/virtualenvs_python/venv/lib/python2.6/site-packages/pip/util.py", line 490, in unpack_file
    unzip_file(filename, location, flatten=not filename.endswith('.pybundle'))
  File "/var/www/sites/virtualenvs_python/venv/lib/python2.6/site-packages/pip/util.py", line 380, in unzip_file
    zip = zipfile.ZipFile(zipfp)
  File "/usr/local/python/lib/python2.6/zipfile.py", line 696, in __init__
    self._GetContents()
  File "/usr/local/python/lib/python2.6/zipfile.py", line 716, in _GetContents
    self._RealGetContents()
  File "/usr/local/python/lib/python2.6/zipfile.py", line 728, in _RealGetContents
    raise BadZipfile, "File is not a zip file"
BadZipfile: File is not a zip file