Print stack trace during an exception

lib/tfw/logging.py

@@ -2,6 +2,7 @@
 from datetime import datetime
 from typing import TextIO, Union
 from dataclasses import dataclass
+from traceback import format_exception
 from logging import DEBUG, getLogger, Handler, Formatter, Filter
 
 
@@ -86,10 +87,11 @@ class LogFormatter(Formatter):
             message = record.msg % clean_args
         else:
             message = record.msg
+        trace = '\n'+''.join(format_exception(*record.exc_info)) if record.exc_info else ''
 
         return (f'[{Color.GREY}{date}{Color.RESET}|>'
                 f'{self.severity_to_color[record.levelname]}{record.module}:'
-                f'{record.levelname.lower()}{Color.RESET}] {message}')
+                f'{record.levelname.lower()}{Color.RESET}] {message}{trace}')
 
     def trim(self, value):
         if isinstance(value, dict):
@@ -107,9 +109,10 @@ class VerboseLogFormatter(Formatter):
             message = record.msg % record.args
         else:
             message = record.msg
+        trace = '\n'+''.join(format_exception(*record.exc_info)) if record.exc_info else ''
 
         return (f'[{date}|>{record.module}:{record.levelname.lower()}] '
-                f'{message}')
+                f'{message}{trace}')
 
 
 class WhitelistFilter(Filter):