Improve readability

Co-authored-by: Tzu-ping Chung <[email protected]>

Author: sbidoul

src/pip/_internal/models/link.py

@@ -74,9 +74,8 @@ def parse_pep658_hash(cls, dist_info_metadata: str) -> Optional["LinkHash"]:
         """Parse a PEP 658 data-dist-info-metadata hash."""
         if dist_info_metadata == "true":
             return None
-        try:
-            name, value = dist_info_metadata.split("=", 1)
-        except ValueError:
+        name, sep, value = dist_info_metadata.partition("=")
+        if not sep:
             return None
         if name not in _SUPPORTED_HASHES:
             return None