Refactor for simplification (#9054)

* Refactor for simplification

* cleanup

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

utils/general.py

@@ -582,7 +582,7 @@ def url2file(url):
 
 
 def download(url, dir='.', unzip=True, delete=True, curl=False, threads=1, retry=3):
-    # Multi-threaded file download and unzip function, used in data.yaml for autodownload
+    # Multithreaded file download and unzip function, used in data.yaml for autodownload
     def download_one(url, dir):
         # Download 1 file
         success = True
@@ -594,7 +594,8 @@ def download(url, dir='.', unzip=True, delete=True, curl=False, threads=1, retry
             for i in range(retry + 1):
                 if curl:
                     s = 'sS' if threads > 1 else ''  # silent
-                    r = os.system(f'curl -{s}L "{url}" -o "{f}" --retry 9 -C -')  # curl download with retry, continue
+                    r = os.system(
+                        f'curl -# -{s}L "{url}" -o "{f}" --retry 9 -C -')  # curl download with retry, continue
                     success = r == 0
                 else:
                     torch.hub.download_url_to_file(url, f, progress=threads == 1)  # torch download