commit 7956ef884965ac6f9f7f2a27b835ea80e471c886
author Ruben Vorderman <r.h.p.vorderman@lumc.nl> Fri Feb 26 13:17:51 2021 +0100
committer GitHub <noreply@github.com> Fri Feb 26 21:17:51 2021 +0900
tree 8e40d831d57f47b1d92b1472496c1edde4b3cc03
parent 25935a2881f8da1231a2f6f5884031ae01e570fc

bpo-43317: Use io.DEFAULT_BUFFER_SIZE instead of 1024 in gzip CLI (#24645)

This improves the performance slightly.

Lib/gzip.py

diff --git a/Lib/gzip.py b/Lib/gzip.py
index ee0cbed..1369157 100644
--- a/Lib/gzip.py
+++ b/Lib/gzip.py
@@ -595,7 +595,7 @@ def main():
                 f = builtins.open(arg, "rb")
                 g = open(arg + ".gz", "wb")
         while True:
-            chunk = f.read(1024)
+            chunk = f.read(io.DEFAULT_BUFFER_SIZE)
             if not chunk:
                 break
             g.write(chunk)