From: Giampaolo Rodola <g.rodola@gmail.com>
Date: Sun, 24 Feb 2019 23:46:40 +0000 (-0800)
Subject: bpo-33671: allow setting shutil.copyfile() bufsize globally (GH-12016)
X-Git-Tag: v3.8.0a2~2
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=3b0abb019662e42070f1d6f7e74440afb1808f03;p=thirdparty%2FPython%2Fcpython.git

bpo-33671: allow setting shutil.copyfile() bufsize globally (GH-12016)
---

diff --git a/Lib/shutil.py b/Lib/shutil.py
index 065e08bc5c34..29e7564622e1 100644
--- a/Lib/shutil.py
+++ b/Lib/shutil.py
@@ -187,9 +187,11 @@ def _copyfileobj_readinto(fsrc, fdst, length=COPY_BUFSIZE):
             else:
                 fdst_write(mv)
 
-def copyfileobj(fsrc, fdst, length=COPY_BUFSIZE):
+def copyfileobj(fsrc, fdst, length=0):
     """copy data from file-like object fsrc to file-like object fdst"""
     # Localize variable access to minimize overhead.
+    if not length:
+        length = COPY_BUFSIZE
     fsrc_read = fsrc.read
     fdst_write = fdst.write
     while True: