Tallmad Tallmad - 1 year ago 66
Python Question

What's the difference between logging.warn and logging.warning in Python? Or are they the same?

The samples here http://docs.python.org/2/howto/logging.html use both warn and warning

Answer Source

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.

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