flake8 fixes

robotframework_reportportal/listener.py

@@ -54,7 +54,7 @@
 })
 
 
-def unescape(binary_string: str, stop_at: int = -1):
+def _unescape(binary_string: str, stop_at: int = -1):
     result = bytearray()
     join_list = list()
     join_idx = -3
@@ -161,7 +161,7 @@ def log_message(self, message: Dict) -> None:
                                + str(msg_content.encode('utf-8'))[:-5] + TRUNCATION_SIGN)
             else:
                 # Do not log full binary data, since it's usually corrupted
-                content_type = guess_content_type_from_bytes(unescape(msg.message, 128))
+                content_type = guess_content_type_from_bytes(_unescape(msg.message, 128))
                 msg.message = (f'Binary data of type "{content_type}" logging skipped, as it was processed as text and'
                                ' hence corrupted.')
                 msg.level = 'WARN'