From cab65d1f11a18ebee7d55856de23af1ad5bc7eea Mon Sep 17 00:00:00 2001
From: "James R. Barlow" <jim@purplerock.ca>
Date: Fri, 28 Oct 2016 00:31:04 -0700
Subject: [PATCH] pageinfo: add a python3.4 implementation of isclose()

---
 ocrmypdf/pageinfo.py | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/ocrmypdf/pageinfo.py b/ocrmypdf/pageinfo.py
index 617f4bf7..216562a5 100644
--- a/ocrmypdf/pageinfo.py
+++ b/ocrmypdf/pageinfo.py
@@ -3,12 +3,20 @@
 
 from subprocess import Popen, PIPE
 from decimal import Decimal, getcontext
-from math import hypot, isclose
+from math import hypot
 import re
 import sys
 import PyPDF2 as pypdf
 from collections import namedtuple
 
+try:
+    from math import isclose
+except ImportError:
+    def isclose(a, b, rel_tol=1e-9):
+        "Python 3.4 does not have math.isclose()"
+        diff = abs(b - a)
+        return diff <= abs(rel_tol * b) or diff <= abs(rel_tol * a)
+
 matrix_mult = pypdf.pdf.utils.matrixMultiply
 
 FRIENDLY_COLORSPACE = {