Fixing python 2 exception error

pykat/finesse.py

@@ -56,6 +56,14 @@ try:
 except ImportError:
     # Python 3
     from itertools import zip_longest as izip_longest
+
+
+try:
+    # Add exception in Python 2
+    FileNotFoundError
+except NameError:
+    FileNotFoundError = IOError
+    
 """
 try:
     from future_builtins import zip_longest

setup.py

@@ -6,6 +6,7 @@ Created on Sun Jan 27 09:43:16 2013
 """
 from pykat import __version__ as version
 from distutils.core import setup
+import os
 
 REQUIREMENTS = [i.strip() for i in open("requirements.txt").readlines()]