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: v3.3.5rc2~11
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=b807577da257ba2475abe955120fb7bdf739875c;p=python

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 d26bcdbff6..bb8840ed54 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 cde0baecad..eb8d18cf0b 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 f6d82e24b6..4c99dd3394 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -26,6 +26,9 @@ 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 #20621: Fixes a zipimport bug introduced in 3.3.4 that could cause
   spurious crashes or SystemErrors when importing modules or packages from a
   zip file.  The change causing the problem was reverted.