What's the difference between logging.warn and logging.warning in Python?
logging.warn
has been deprecated since Python 3.3 and you should use logging.warning
.
Prior to Python 3.3, logging.warn
and logging.warning
were the same function, but logging.warn
was not documented, as noted in a closed issue in the Python bug tracker http://bugs.python.org/issue13235:
That's deliberate. The original code (before incorporation into Python) had warn(), which was kept for backward compatibility. The docs refer to warning() because that's what everyone is supposed to use. The method names map to the lower case of the appropriate logging level name.
logging.warn()
was kept for backwards compatibility but a deprecation warning was added. logging.warning()
is what everyone is supposed to use.
Prior to Python 3.3, they are the same, however warn
is deprecated:
>>> import logging
>>> logging.warn is logging.warning
True