fix conflict and keep non-alphabetical order following @anargyri advice

.gitignore

@@ -155,6 +155,14 @@ ml-20m/
 *.model
 *.mml
 nohup.out
+*.svg
+*.html
+*.js
+*.css
+*.tff
+*.woff
+*.woff2
+*.eot
 
 #####  kdd 2020 tutorial data folder
 examples/07_tutorials/KDD2020-tutorial/data_folder/
@@ -164,4 +172,4 @@ examples/07_tutorials/KDD2020-tutorial/data_folder/
 *.sh
 
 tests/**/resources/
-reports/
+reports/

reco_utils/dataset/download_utils.py

@@ -9,10 +9,17 @@
 from contextlib import contextmanager
 from tempfile import TemporaryDirectory
 from tqdm import tqdm
+import backoff
+
 
 log = logging.getLogger(__name__)
 
 
+@backoff.on_exception(
+    backoff.expo,
+    (requests.exceptions.HTTPError, requests.exceptions.ChunkedEncodingError),
+    max_tries=5,
+)
 def maybe_download(url, filename=None, work_directory=".", expected_bytes=None):
     """Download a file if it is not already downloaded.
 
@@ -21,7 +28,7 @@ def maybe_download(url, filename=None, work_directory=".", expected_bytes=None):
         work_directory (str): Working directory.
         url (str): URL of the file to download.
         expected_bytes (int): Expected file size in bytes.
-        
+
     Returns:
         str: File path of the file downloaded.
     """
@@ -57,8 +64,8 @@ def maybe_download(url, filename=None, work_directory=".", expected_bytes=None):
 
 @contextmanager
 def download_path(path=None):
-    """Return a path to download data. If `path=None`, then it yields a temporal path that is eventually deleted, 
-    otherwise the real path of the input. 
+    """Return a path to download data. If `path=None`, then it yields a temporal path that is eventually deleted,
+    otherwise the real path of the input.
 
     Args:
         path (str): Path to download data.

setup.py

@@ -47,6 +47,7 @@
     "scikit-surprise>=0.19.1,<=1.1.1",
     "cmake>=3.18.4.post1",
     "xlearn==0.40a1",
+    "backoff>=1.8.0",
 ]
 
 # shared dependencies