From: Antoine Pitrou <solipsis@pitrou.net>
Date: Thu, 27 Feb 2014 21:14:31 +0000 (+0100)
Subject: Issue #20791: copy.copy() now doesn't make a copy when the input is a bytes object... 
X-Git-Tag: v3.4.1rc1~233^2~186
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=dc9215f8828b23ed6c294f8e64342a55dcdf1e4c;p=thirdparty%2FPython%2Fcpython.git

Issue #20791: copy.copy() now doesn't make a copy when the input is a bytes object.  Initial patch by Peter Otten.
---

diff --git a/Lib/copy.py b/Lib/copy.py
index d26bcdbff6ae..bb8840ed549a 100644
--- a/Lib/copy.py
+++ b/Lib/copy.py
@@ -110,7 +110,7 @@ _copy_dispatch = d = {}
 def _copy_immutable(x):
     return x
 for t in (type(None), int, float, bool, str, tuple,
-          frozenset, type, range,
+          bytes, frozenset, type, range,
           types.BuiltinFunctionType, type(Ellipsis),
           types.FunctionType, weakref.ref):
     d[t] = _copy_immutable
diff --git a/Lib/test/test_copy.py b/Lib/test/test_copy.py
index cde0baecad62..eb8d18cf0b12 100644
--- a/Lib/test/test_copy.py
+++ b/Lib/test/test_copy.py
@@ -98,6 +98,7 @@ class TestCopy(unittest.TestCase):
             pass
         tests = [None, 42, 2**100, 3.14, True, False, 1j,
                  "hello", "hello\u1234", f.__code__,
+                 b"world", bytes(range(256)),
                  NewStyle, range(10), Classic, max, WithMetaclass]
         for x in tests:
             self.assertIs(copy.copy(x), x)
diff --git a/Misc/NEWS b/Misc/NEWS
index d58d17bff034..77b969cecfb1 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -14,6 +14,9 @@ Core and Builtins
 Library
 -------
 
+- Issue #20791: copy.copy() now doesn't make a copy when the input is
+  a bytes object.  Initial patch by Peter Otten.
+
 - Issue #19748: On AIX, time.mktime() now raises an OverflowError for year
   outsize range [1902; 2037].