IOError: Not a gzipped file

[Lee Nelson]

I stepped throught the example three times. First after it installed, it gave some numerical output and no images. Then I restarted the computer. Second it gave the following errors and no images. The third time, no numerical output and no images. Are there other packages that should be installed in the virtual environment for the graphs to work?

Step 4 works:
train-images-idx3-ubyte.gz
train-labels-idx1-ubyte.gz
t10k-images-idx3-ubyte.gz
t10k-labels-idx1-ubyte.gz

Step 5:

(train_data, 
 train_labels, 
 validation_data, 
 validation_labels, 
 test_data, 
 test_labels) = mnist.get_data(download_dir)

('Extracting', '/tmp/train-images-idx3-ubyte.gz')
---------------------------------------------------------------------------
IOError                                   Traceback (most recent call last)
<ipython-input-7-aa08c9ebe098> in <module>()
      5  validation_labels,
      6  test_data,
----> 7  test_labels) = mnist.get_data(download_dir)

/home/lee/.local/lib/python2.7/site-packages/tdb/examples/mnist.pyc in get_data(data_root)
     61 
     62   # Extract it into numpy arrays.
---> 63   train_data = extract_data(train_data_filename, 60000)
     64   train_labels = extract_labels(train_labels_filename, 60000)
     65   test_data = extract_data(test_data_filename, 10000)

/home/lee/.local/lib/python2.7/site-packages/tdb/examples/mnist.pyc in extract_data(filename, num_images)
     35   print('Extracting', filename)
     36   with gzip.open(filename) as bytestream:
---> 37     bytestream.read(16)
     38     buf = bytestream.read(IMAGE_SIZE * IMAGE_SIZE * num_images)
     39     data = np.frombuffer(buf, dtype=np.uint8).astype(np.float32)

/home/lee/anaconda2/lib/python2.7/gzip.pyc in read(self, size)
    266             try:
    267                 while size > self.extrasize:
--> 268                     self._read(readsize)
    269                     readsize = min(self.max_read_chunk, readsize * 2)
    270             except EOFError:

/home/lee/anaconda2/lib/python2.7/gzip.pyc in _read(self, size)
    301 
    302             self._init_read()
--> 303             self._read_gzip_header()
    304             self.decompress = zlib.decompressobj(-zlib.MAX_WBITS)
    305             self._new_member = False

/home/lee/anaconda2/lib/python2.7/gzip.pyc in _read_gzip_header(self)
    195         magic = self.fileobj.read(2)
    196         if magic != '\037\213':
--> 197             raise IOError, 'Not a gzipped file'
    198         method = ord( self.fileobj.read(1) )
    199         if method != 8:

IOError: Not a gzipped file

[Lee Nelson]

I was wrong!

The numerical output and images loaded while I was writing the issue. My browser was 'bogged down' and I thought It was going to crash (which is common for me). It was probably doing the processing for the data at that time. So for anyone who does a search and finds my error report, try giving it some time to load!