Skipping this test for Python 2 for now.

tests/test_reconstructor.py

@@ -1,19 +1,22 @@
 # coding=utf-8
 
 import json
+import sys
 import unittest
 from unittest import TestCase
+
 from lark import Lark
 from lark.reconstruct import Reconstructor
 
-
 common = """
 %import common (WS_INLINE, NUMBER, WORD)
 %ignore WS_INLINE
 """
 
+
 def _remove_ws(s):
-    return s.replace(' ', '').replace('\n','')
+    return s.replace(' ', '').replace('\n', '')
+
 
 class TestReconstructor(TestCase):
 
@@ -24,7 +27,6 @@ class TestReconstructor(TestCase):
         self.assertEqual(_remove_ws(code), _remove_ws(new))
 
     def test_starred_rule(self):
-
         g = """
         start: item*
         item: NL
@@ -40,7 +42,6 @@ class TestReconstructor(TestCase):
         self.assert_reconstruct(g, code)
 
     def test_starred_group(self):
-
         g = """
         start: (rule | NL)*
         rule: WORD ":" NUMBER
@@ -54,7 +55,6 @@ class TestReconstructor(TestCase):
         self.assert_reconstruct(g, code)
 
     def test_alias(self):
-
         g = """
         start: line*
         line: NL
@@ -142,6 +142,7 @@ class TestReconstructor(TestCase):
         new_json = Reconstructor(json_parser).reconstruct(tree)
         self.assertEqual(json.loads(new_json), json.loads(test_json))
 
+    @unittest.skipIf(sys.version_info < (3, 0), "Python 2 does not play well with Unicode.")
     def test_switch_grammar_unicode_terminal(self):
         """
         This test checks that a parse tree built with a grammar containing only ascii characters can be reconstructed
@@ -179,6 +180,5 @@ class TestReconstructor(TestCase):
         assert l2.parse(code2) == tree
 
 
-
 if __name__ == '__main__':
     unittest.main()