diff options
| -rw-r--r-- | Doc/howto/logging.rst | 9 | ||||
| -rw-r--r-- | Doc/library/logging.rst | 8 |
2 files changed, 13 insertions, 4 deletions
diff --git a/Doc/howto/logging.rst b/Doc/howto/logging.rst index fcc6bec768..ff4e1d73a9 100644 --- a/Doc/howto/logging.rst +++ b/Doc/howto/logging.rst @@ -178,10 +178,11 @@ following example:: raise ValueError('Invalid log level: %s' % loglevel) logging.basicConfig(level=numeric_level, ...) -The call to :func:`basicConfig` should come *before* any calls to :func:`debug`, -:func:`info` etc. As it's intended as a one-off simple configuration facility, -only the first call will actually do anything: subsequent calls are effectively -no-ops. +The call to :func:`basicConfig` should come *before* any calls to +:func:`debug`, :func:`info`, etc. Otherwise, those functions will call +:func:`basicConfig` for you with the default options. As it's intended as a +one-off simple configuration facility, only the first call will actually do +anything: subsequent calls are effectively no-ops. If you run the above script several times, the messages from successive runs are appended to the file *example.log*. If you want each run to start afresh, diff --git a/Doc/library/logging.rst b/Doc/library/logging.rst index b32af94e85..c9b049388e 100644 --- a/Doc/library/logging.rst +++ b/Doc/library/logging.rst @@ -242,6 +242,10 @@ is the module's name in the Python package namespace. above example). In such circumstances, it is likely that specialized :class:`Formatter`\ s would be used with particular :class:`Handler`\ s. + If no handler is attached to this logger (or any of its ancestors, + taking into account the relevant :attr:`Logger.propagate` attributes), + the message will be sent to the handler set on :attr:`lastResort`. + .. versionchanged:: 3.2 The *stack_info* parameter was added. @@ -1038,6 +1042,10 @@ functions. above example). In such circumstances, it is likely that specialized :class:`Formatter`\ s would be used with particular :class:`Handler`\ s. + This function (as well as :func:`info`, :func:`warning`, :func:`error` and + :func:`critical`) will call :func:`basicConfig` if the root logger doesn't + have any handler attached. + .. versionchanged:: 3.2 The *stack_info* parameter was added. |