Use memoryview to avoid unnecessary copies while splitting Extras.

jaraco · Jul 14, 2023 · 980ae60 · 980ae60
1 parent 1b4bb55
commit 980ae60
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/Lib/zipfile/__init__.py b/Lib/zipfile/__init__.py
@@ -209,8 +209,10 @@ def read_one(cls, raw):
 
     @classmethod
     def split(cls, data):
-        while data:
-            extra, data = _Extra.read_one(data)
+        # use memoryview for zero-copy slices
+        rest = memoryview(data)
+        while rest:
+            extra, rest = _Extra.read_one(rest)
             yield extra
 
     @classmethod