build: fix flake8 errors

Author: thebaptiste

jinja2_getenv_extension/__init__.py

@@ -1,13 +1,13 @@
 import os
 
-import jinja2
 from jinja2.ext import Extension
 
 try:
     from jinja2 import pass_eval_context as eval_context
 except ImportError:
     from jinja2 import evalcontextfilter as eval_context
 
+
 @eval_context
 def getenv(eval_ctx, value, default=None):
     result = os.environ.get(value, default)

tests/test_basic.py

@@ -20,7 +20,7 @@ def test_extension1():
 def test_extension2():
     env = Environment(extensions=["jinja2_getenv_extension.GetenvExtension"])
     try:
-        del(os.environ["FOOBAR"])
+        del (os.environ["FOOBAR"])
     except KeyError:
         pass
     template = env.from_string("test {{ \"FOOBAR\"|getenv }}")
@@ -31,7 +31,7 @@ def test_extension2():
 def test_extension3():
     env = Environment(extensions=["jinja2_getenv_extension.GetenvExtension"])
     try:
-        del(os.environ["FOOBAR"])
+        del (os.environ["FOOBAR"])
     except KeyError:
         pass
     template = env.from_string("test {{ \"FOOBAR\"|getenv(\"foo\") }}")