pi@raspberrypi:~/Adafruit_Python_ADS1x15 $ sudo python setup.py install
Extracting in /tmp/tmpetNqOc
Traceback (most recent call last):
  File "setup.py", line 4, in <module>
    use_setuptools()
  File "/home/pi/Adafruit_Python_ADS1x15/ez_setup.py", line 128, in use_setuptools
    return _do_download(version, download_base, to_dir, download_delay)
  File "/home/pi/Adafruit_Python_ADS1x15/ez_setup.py", line 108, in _do_download
    _build_egg(egg, archive, to_dir)
  File "/home/pi/Adafruit_Python_ADS1x15/ez_setup.py", line 57, in _build_egg
    with archive_context(archive_filename):
  File "/usr/lib/python2.7/contextlib.py", line 17, in __enter__
    return self.gen.next()
  File "/home/pi/Adafruit_Python_ADS1x15/ez_setup.py", line 88, in archive_context
    with get_zip_class()(filename) as archive:
  File "/usr/lib/python2.7/zipfile.py", line 770, in __init__
    self._RealGetContents()
  File "/usr/lib/python2.7/zipfile.py", line 813, in _RealGetContents
    raise BadZipfile, "File is not a zip file"
zipfile.BadZipfile: File is not a zip file