Remove fetching test files by ETag.

Will add it as a separate PR as per review comments.

Signed-off-by: Acharya <[email protected]>

example/onnx/super_resolution.py

@@ -34,7 +34,7 @@
 def import_onnx():
     """Import the onnx model into mxnet"""
     model_url = 'https://s3.amazonaws.com/onnx-mxnet/examples/super_resolution.onnx'
-    download(model_url, 'super_resolution.onnx', version_tag='"7348c879d16c42bc77e24e270f663524"')
+    download(model_url, 'super_resolution.onnx')
 
     LOGGER.info("Converting onnx format to mxnet's symbol and params...")
     sym, params = onnx_mxnet.import_model('super_resolution.onnx')
@@ -46,7 +46,7 @@ def get_test_image():
     # Load test image
     input_image_dim = 224
     img_url = 'https://s3.amazonaws.com/onnx-mxnet/examples/super_res_input.jpg'
-    download(img_url, 'super_res_input.jpg', version_tag='"02c90a7248e51316b11f7f39dd1b226d"')
+    download(img_url, 'super_res_input.jpg')
     img = Image.open('super_res_input.jpg').resize((input_image_dim, input_image_dim))
     img_ycbcr = img.convert("YCbCr")
     img_y, img_cb, img_cr = img_ycbcr.split()

python/mxnet/contrib/onnx/_import/import_model.py

@@ -22,15 +22,19 @@
 from .import_onnx import GraphProto
 
 def import_model(model_file):
-    """Imports the supplied ONNX model file into MXNet symbol and parameters.
-    :parameters model_file
+    """Imports the ONNX model file passed as a parameter into MXNet symbol and parameters.
+
+    Parameters
     ----------
-    model_file : ONNX model file name
+    model_file : str
+        ONNX model file name
 
-    :returns (sym, params)
+    Returns
     -------
-    sym : mx.symbol
-        Compatible mxnet symbol
+    Mxnet symbol and parameter objects.
+
+    sym : mxnet.symbol
+        Mxnet symbol
     params : dict of str to mx.ndarray
         Dict of converted parameters stored in mx.ndarray format
     """

python/mxnet/test_utils.py

@@ -1367,8 +1367,7 @@ def list_gpus():
             pass
     return range(len([i for i in re.split('\n') if 'GPU' in i]))
 
-
-def download(url, fname=None, dirname=None, overwrite=False, version_tag=None):
+def download(url, fname=None, dirname=None, overwrite=False):
     """Download an given URL
 
     Parameters
@@ -1386,8 +1385,6 @@ def download(url, fname=None, dirname=None, overwrite=False, version_tag=None):
         Default is false, which means skipping download if the local file
         exists. If true, then download the url to overwrite the local file if
         exists.
-    version_tag : str, optional
-        the version tag of the file.
 
     Returns
     -------
@@ -1410,15 +1407,12 @@ def download(url, fname=None, dirname=None, overwrite=False, version_tag=None):
                 if exc.errno != errno.EEXIST:
                     raise OSError('failed to create ' + dirname)
 
-    if not overwrite and os.path.exists(fname) and not version_tag:
+    if not overwrite and os.path.exists(fname):
         logging.info("%s exists, skipping download", fname)
         return fname
 
     r = requests.get(url, stream=True)
     assert r.status_code == 200, "failed to open %s" % url
-    if version_tag and r.headers['ETag'] != version_tag:
-        logging.info("The version tag of the file does not match the expected version. "
-                     + "Proceeding with the file download...")
     with open(fname, 'wb') as f:
         for chunk in r.iter_content(chunk_size=1024):
             if chunk: # filter out keep-alive new chunks