Clean up header

src/sage/interfaces/expect.py

@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 """
 Common Interface Functionality through Pexpect
 
@@ -24,20 +25,17 @@
   after a crash, when a command is executed in _eval_line. Allow
   synchronisation of the GAP interface.
 
+- François Bissey, Bill Page, Jeroen Demeyer (2015-12-09): Upgrade to
+  pexpect 4.0.1 + patches, see :trac:`10295`.
 """
 
 #*****************************************************************************
 #       Copyright (C) 2005 William Stein <[email protected]>
 #
-#  Distributed under the terms of the GNU General Public License (GPL)
-#
-#    This code is distributed in the hope that it will be useful,
-#    but WITHOUT ANY WARRANTY; without even the implied warranty of
-#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-#    General Public License for more details.
-#
-#  The full text of the GPL is available at:
-#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 2 of the License, or
+# (at your option) any later version.
 #                  http://www.gnu.org/licenses/
 #*****************************************************************************
 
@@ -51,15 +49,11 @@
 import six
 from random import randrange
 
-########################################################
-# Important note: We use Pexpect 2.0 *not* Pexpect 2.1.
-# For reasons I don't understand, pexpect2.1 is much
-# worse than pexpect 2.0 for everything Sage does.
-########################################################
 import pexpect
 from pexpect import ExceptionPexpect
 from sage.interfaces.sagespawn import SageSpawn
-from sage.interfaces.interface import Interface, InterfaceElement, InterfaceFunction, InterfaceFunctionElement, AsciiArtString
+from sage.interfaces.interface import (Interface, InterfaceElement,
+        InterfaceFunction, InterfaceFunctionElement, AsciiArtString)
 
 from sage.structure.element import RingElement