Set the log to print to a file.
str
, or None
Filename of the log to print to. If None, stdout is used. To suppress log outputs, use set_log_level(‘WARN’).
str
Format of the output messages. See the following for examples:
e.g., “%(asctime)s - %(levelname)s - %(message)s”.
None
Overwrite the log file (if it exists). Otherwise, statements will be appended to the log (default). None is the same as False, but additionally raises a warning to notify the user that log entries will be appended.