Arxiv tar file download endpoint API update

1. the Arxiv tex file download endpoint API: from 'export.arxiv.org/e-print/xxx' to 'arxiv.org/src/xxx'
2. the Arxiv tex file : from '.tar' to '.tar.gz'

app.py

@@ -9,14 +9,13 @@ import requests
 
 
 def convert_tar_to_zip(arxiv_url):
-    latex_source_url = (arxiv_url.replace('/abs/', '/e-print/')
-                        .replace('arxiv.org', 'export.arxiv.org'))
+    latex_source_url = (arxiv_url.replace('/abs/', 'src'))
     
     # Fetch the latex source as .tar.gz file
     resp = requests.get(latex_source_url)
     print(resp.status_code)
     tar_file = resp.content
-    with tarfile.open(fileobj=io.BytesIO(tar_file)) as tar:
+    with tarfile.open(fileobj=io.BytesIO(tar_file), mode='r:gz') as tar:
         with tempfile.TemporaryDirectory() as temp_dir:
             # Extract the tar file to a temporary directory
             tar.extractall(temp_dir)