Dinsic Blacking with black==18.6b2

1 files changed, 1 insertions, 1 deletions

diff --git a/tests/test_utils/logging_setup.py b/tests/test_utils/logging_setup.py

index fde0baee8e..813f984199 100644
--- a/tests/test_utils/logging_setup.py
+++ b/tests/test_utils/logging_setup.py
@@ -27,7 +27,7 @@ class ToTwistedHandler(logging.Handler):
 
     def emit(self, record):
         log_entry = self.format(record)
-        log_level = record.levelname.lower().replace('warning', 'warn')
+        log_level = record.levelname.lower().replace("warning", "warn")
         self.tx_log.emit(
             twisted.logger.LogLevel.levelWithName(log_level),
             log_entry.replace("{", r"(").replace("}", r")"),