From 77d5ffb10f02de9aa4731e3c5a9305497aa97062 Mon Sep 17 00:00:00 2001
From: Robert Smallshire <robert@smallshire.org.uk>
Date: Sat, 31 Jan 2015 16:06:22 +0100
Subject: [PATCH] Fixed broken import.

---
 segpy/toolkit.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/segpy/toolkit.py b/segpy/toolkit.py
index 75b8714..4830d3f 100644
--- a/segpy/toolkit.py
+++ b/segpy/toolkit.py
@@ -3,7 +3,6 @@ from __future__ import print_function
 from array import array
 from collections import namedtuple, OrderedDict
 import itertools
-from portability import izip_longest
 import os
 import struct
 import re
@@ -21,7 +20,7 @@ from segpy.ibm_float import ibm2ieee, ieee2ibm
 from segpy.revisions import canonicalize_revision
 from segpy.trace_header_definition import TRACE_HEADER_DEF
 from segpy.util import file_length, batched, pad, complementary_slices, NATIVE_ENDIANNESS
-from segpy.portability import EMPTY_BYTE_STRING
+from segpy.portability import EMPTY_BYTE_STRING, izip_longest
 
 HEADER_NEWLINE = '\r\n'