Limit image size, fixes #4464.

[librarian.git] / src / librarian / util.py

diff --git a/src/librarian/util.py b/src/librarian/util.py
index 63e7996..805cefd 100644 (file)
--- a/src/librarian/util.py
+++ b/src/librarian/util.py
@@ -2,10 +2,7 @@
 # by Paul Winkler
 # http://code.activestate.com/recipes/81611-roman-numerals/
 # PSFL (GPL compatible)
-from __future__ import print_function, unicode_literals
-
 import os
-import six
 
 
 def int_to_roman(input):
@@ -94,7 +91,7 @@ def roman_to_int(input):
      ...
     ValueError: input is not a valid roman numeral: IL
     """
-    if not isinstance(input, six.text_type):
+    if not isinstance(input, str):
         raise TypeError("expected string, got %s" % type(input))
     input = input.upper()
     nums = ['M', 'D', 'C', 'L', 'X', 'V', 'I']