Improve readability of download-model.py (#3497)

download-model.py

@@ -24,14 +24,14 @@
 
 class ModelDownloader:
     def __init__(self, max_retries=5):
-        self.s = requests.Session()
+        self.session = requests.Session()
         if max_retries:
-            self.s.mount('https://cdn-lfs.huggingface.co', HTTPAdapter(max_retries=max_retries))
-            self.s.mount('https://huggingface.co', HTTPAdapter(max_retries=max_retries))
+            self.session.mount('https://cdn-lfs.huggingface.co', HTTPAdapter(max_retries=max_retries))
+            self.session.mount('https://huggingface.co', HTTPAdapter(max_retries=max_retries))
         if os.getenv('HF_USER') is not None and os.getenv('HF_PASS') is not None:
-            self.s.auth = (os.getenv('HF_USER'), os.getenv('HF_PASS'))
+            self.session.auth = (os.getenv('HF_USER'), os.getenv('HF_PASS'))
         if os.getenv('HF_TOKEN') is not None:
-            self.s.headers = {'authorization': f'Bearer {os.getenv("HF_TOKEN")}'}
+            self.session.headers = {'authorization': f'Bearer {os.getenv("HF_TOKEN")}'}
 
     def sanitize_model_and_branch_names(self, model, branch):
         if model[-1] == '/':
@@ -62,7 +62,7 @@ def get_download_links_from_huggingface(self, model, branch, text_only=False):
         is_lora = False
         while True:
             url = f"{base}{page}" + (f"?cursor={cursor.decode()}" if cursor else "")
-            r = self.s.get(url, timeout=10)
+            r = self.session.get(url, timeout=10)
             r.raise_for_status()
             content = r.content
 
@@ -136,7 +136,7 @@ def get_single_file(self, url, output_folder, start_from_scratch=False):
         if output_path.exists() and not start_from_scratch:
 
             # Check if the file has already been downloaded completely
-            r = self.s.get(url, stream=True, timeout=10)
+            r = self.session.get(url, stream=True, timeout=10)
             total_size = int(r.headers.get('content-length', 0))
             if output_path.stat().st_size >= total_size:
                 return
@@ -145,7 +145,7 @@ def get_single_file(self, url, output_folder, start_from_scratch=False):
             headers = {'Range': f'bytes={output_path.stat().st_size}-'}
             mode = 'ab'
 
-        with self.s.get(url, stream=True, headers=headers, timeout=10) as r:
+        with self.session.get(url, stream=True, headers=headers, timeout=10) as r:
             r.raise_for_status()  # Do not continue the download if the request was unsuccessful
             total_size = int(r.headers.get('content-length', 0))
             block_size = 1024 * 1024  # 1MB