Fix pep8: W503: line break before binary operator

Author: blueyed

pytest_django_test/db_helpers.py

@@ -95,8 +95,8 @@ def drop_database(name=TEST_DB_NAME, suffix=None):
 
     if get_db_engine() == 'mysql':
         r = run_mysql('-e', 'DROP DATABASE %s' % name)
-        assert ('database doesn\'t exist' in force_text(r.std_err)
-                or r.status_code == 0)
+        assert ('database doesn\'t exist' in force_text(r.std_err) or
+                r.status_code == 0)
         return
 
     if get_db_engine() == 'sqlite3':