Fixed #18269 -- Applied unicode_literals for Python 3 compatibility.

Thanks Vinay Sajip for the support of his django3 branch and
Jannis Leidel for the review.

tests/regressiontests/localflavor/jp/tests.py

@@ -1,3 +1,5 @@
+from __future__ import unicode_literals
+
 from django.contrib.localflavor.jp.forms import (JPPostalCodeField,
     JPPrefectureSelect)
 
@@ -7,7 +9,7 @@ from django.test import SimpleTestCase
 class JPLocalFlavorTests(SimpleTestCase):
     def test_JPPrefectureSelect(self):
         f = JPPrefectureSelect()
-        out = u'''<select name="prefecture">
+        out = '''<select name="prefecture">
 <option value="hokkaido">Hokkaido</option>
 <option value="aomori">Aomori</option>
 <option value="iwate">Iwate</option>
@@ -59,7 +61,7 @@ class JPLocalFlavorTests(SimpleTestCase):
         self.assertHTMLEqual(f.render('prefecture', 'kanagawa'), out)
 
     def test_JPPostalCodeField(self):
-        error_format = [u'Enter a postal code in the format XXXXXXX or XXX-XXXX.']
+        error_format = ['Enter a postal code in the format XXXXXXX or XXX-XXXX.']
         valid = {
                 '251-0032': '2510032',
                 '2510032': '2510032',