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Andrew M. Kuchling 2010-04-14 14:28:31 +00:00
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Doc/whatsnew/2.7.rst
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@ -331,7 +331,28 @@ standard input or output.
PEP 391: Dictionary-Based Configuration For Logging
====================================================
XXX write this section.
.. not documented in library reference yet.
The :mod:`logging` module is very flexible; an application can define
a tree of logging subsystems, and each logger in this tree can filter
out certain messages, format them differently, and direct messages to
a varying number of handlers.
All this flexibility can require a lot of configuration. You can
write Python statements to create objects and set their properties,
but a complex set-up would require verbose but boring code.
:mod:`logging` also supports a :func:`~logging.config.fileConfig`
function that parses a file, but the file format doesn't support
configuring filters, and it's messier to generate programmatically.
Python 2.7 adds a :func:`~logging.config.dictConfig` function that
uses a dictionary, and there are many ways to produce a dictionary
from different sources. You can construct one with code, of course.
Python's standard library now includes a JSON parser, so you could
parse a file containing JSON, or you could use a YAML parsing library
if one is installed.
XXX describe an example.
Two smaller enhancements to the logging module are: