| ``'midnight'`` | Roll over at midnight |
+----------------+-----------------------+
- If *backupCount* is non-zero, the system will save old log files by appending
- extensions to the filename. The extensions are date-and-time based, using the
- strftime format ``%Y-%m-%d_%H-%M-%S`` or a leading portion thereof, depending on
- the rollover interval. At most *backupCount* files will be kept, and if more
- would be created when rollover occurs, the oldest one is deleted.
+ The system will save old log files by appending extensions to the filename.
+ The extensions are date-and-time based, using the strftime format
+ ``%Y-%m-%d_%H-%M-%S`` or a leading portion thereof, depending on the rollover
+ interval. If *backupCount* is nonzero, at most *backupCount* files will be
+ kept, and if more would be created when rollover occurs, the oldest one is
+ deleted.
.. method:: TimedRotatingFileHandler.doRollover()