Merge pull request python-babel#45 from tsouvarev/django-2.1-compatibility

Django 2.1 compatibility

Author: EnTeQuAk

django_babel/extract.py

@@ -1,5 +1,14 @@
 # -*- coding: utf-8 -*-
-from django.template.base import Lexer, TOKEN_TEXT, TOKEN_VAR, TOKEN_BLOCK
+try:
+    from django.template.base import Lexer, TOKEN_TEXT, TOKEN_VAR, TOKEN_BLOCK
+except ImportError:
+    # Django 2.1+
+    from django.template.base import Lexer, TokenType
+
+    TOKEN_TEXT = TokenType.TEXT
+    TOKEN_VAR = TokenType.VAR
+    TOKEN_BLOCK = TokenType.BLOCK
+
 from django.utils.translation import trim_whitespace
 from django.utils.encoding import smart_text
 

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py{35,36}-djangomaster, py{27,34,35,36}-django{18,111,20}, lint, docs
+envlist = py{35,36,37}-django{21,master}, py{27,34,35,36}-django{18,111,20}, lint, docs
 
 [testenv]
 deps =
@@ -11,6 +11,7 @@ deps =
     django18: Django>=1.8,<1.9
     django111: Django>=1.11,<2.0
     django20: Django>=2.0,<2.1
+    django21: Django>=2.1,<2.2
     djangomaster: https://github.com/django/django/archive/master.tar.gz#egg=Django
 commands = py.test {posargs}