A bit of cleanup in the environment
diff --git a/jinja2/environment.py b/jinja2/environment.py
index a8149c7..d19ae15 100644
--- a/jinja2/environment.py
+++ b/jinja2/environment.py
@@ -11,7 +11,11 @@
import os
import sys
from jinja2 import nodes
-from jinja2.defaults import *
+from jinja2.defaults import BLOCK_START_STRING, \
+ BLOCK_END_STRING, VARIABLE_START_STRING, VARIABLE_END_STRING, \
+ COMMENT_START_STRING, COMMENT_END_STRING, LINE_STATEMENT_PREFIX, \
+ LINE_COMMENT_PREFIX, TRIM_BLOCKS, NEWLINE_SEQUENCE, \
+ DEFAULT_FILTERS, DEFAULT_TESTS, DEFAULT_NAMESPACE
from jinja2.lexer import get_lexer, TokenStream
from jinja2.parser import Parser
from jinja2.optimizer import optimize
@@ -23,7 +27,7 @@
concat, consume, internalcode, _encode_filename
import six
from functools import reduce
-from six.moves import filter, map, zip
+from six.moves import filter, map
# for direct template usage we have up to ten living environments
