Use flake8 instead of pep8.

tests/test_accounts.py

@@ -71,7 +71,7 @@ class TestAccount(test_base.TestCase):
         ret_orig_storage_id = sorted(
             x[0][x[0].find('AUTH_') + 5:] for x in ret)
         self.assertEquals(tenant_list_ids, ret_orig_storage_id)
-        [self.assertTrue(x[1].startswith(STORAGE_DEST)) for x in ret]
+        [self.assertTrue(y[1].startswith(STORAGE_DEST)) for y in ret]
 
     def test_sync_account(self):
         ret = []

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py27,pep8
+envlist = py27,flake8
 
 [testenv]
 setenv = VIRTUAL_ENV={envdir}
@@ -11,9 +11,9 @@ deps = -r{toxinidir}/tools/pip-requires
        -r{toxinidir}/tools/test-requires
 commands = python setup.py testr --testr-args="{posargs}"
 
-[testenv:pep8]
-deps = pep8
-commands = pep8 --repeat --show-source swsync bin setup.py tests
+[testenv:flake8]
+deps = flake8
+commands = flake8 --show-source swsync bin setup.py tests
 
 [testenv:venv]
 commands = {posargs}