Forward-port r59310:
os.access now returns True on Windows for any existing directory.
diff --git a/Misc/NEWS b/Misc/NEWS
index 4c3369c..9cdcbc2 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -310,6 +310,8 @@
Library
-------
+- os.access now returns True on Windows for any existing directory.
+
- Issue #1727780: Support loading pickles of random.Random objects created
on 32-bit systems on 64-bit systems, and vice versa. As a consequence
of the change, Random pickles created by Python 2.6 cannot be loaded
diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index ff79a0e..df15860 100644
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -1540,8 +1540,11 @@
/* File does not exist, or cannot read attributes */
return PyBool_FromLong(0);
/* Access is possible if either write access wasn't requested, or
- the file isn't read-only. */
- return PyBool_FromLong(!(mode & 2) || !(attr & FILE_ATTRIBUTE_READONLY));
+ the file isn't read-only, or if it's a directory, as there are
+ no read-only directories on Windows. */
+ return PyBool_FromLong(!(mode & 2)
+ || !(attr & FILE_ATTRIBUTE_READONLY)
+ || (attr & FILE_ATTRIBUTE_DIRECTORY));
#else
int res;
if (!PyArg_ParseTuple(args, "eti:access",