Make binascii.hexlify() use s# for its arguments instead of t# to actually

match its documentation stating it accepts any read-only buffer.

Misc/NEWS

@@ -75,6 +75,9 @@ Core and builtins
 Extension Modules
 -----------------
 
+- Change binascii.hexlify to accept a read-only buffer instead of only a char
+  buffer and actually follow its documentation.
+
 - Fixed a potentially invalid memory access of CJKCodecs' shift-jis decoder.
 
 - Patch #1478788 (modified version): The functional extension module has

Modules/binascii.c

@@ -909,7 +909,7 @@ binascii_hexlify(PyObject *self, PyObject *args)
 	char* retbuf;
 	Py_ssize_t i, j;
 
-	if (!PyArg_ParseTuple(args, "t#:b2a_hex", &argbuf, &arglen))
+	if (!PyArg_ParseTuple(args, "s#:b2a_hex", &argbuf, &arglen))
 		return NULL;
 
 	retval = PyString_FromStringAndSize(NULL, arglen*2);