From fa27d7361397f07ec02ac2e68da0562c91cfa9cb Mon Sep 17 00:00:00 2001
From: oesteban <code@oscaresteban.es>
Date: Thu, 22 Nov 2018 09:21:29 -0800
Subject: [PATCH] [MAINT] Import only Sequence to avoid DeprecationWarning

---
 nipype/interfaces/base/traits_extension.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/nipype/interfaces/base/traits_extension.py b/nipype/interfaces/base/traits_extension.py
index a98ec020c8..7a464cc557 100644
--- a/nipype/interfaces/base/traits_extension.py
+++ b/nipype/interfaces/base/traits_extension.py
@@ -25,7 +25,7 @@
 
 from builtins import str, bytes
 import os
-import collections
+from collections import Sequence
 
 # perform all external trait imports here
 from traits import __version__ as traits_version
@@ -323,7 +323,7 @@ def validate(self, object, name, value):
 
         # want to treat range and other sequences (except str) as list
         if not isinstance(value, (str, bytes)) and isinstance(
-                value, collections.Sequence):
+                value, Sequence):
             value = list(value)
 
         if not isdefined(value) or \