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Kirill Smelkov
cpython
Commits
f8bff488
Commit
f8bff488
authored
Apr 24, 2010
by
Georg Brandl
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Markup fixes.
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b558f17b
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Doc/library/syslog.rst
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Doc/library/syslog.rst
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f8bff488
:mod:`syslog` --- Unix syslog library routines
==============================================
...
...
@@ -11,66 +10,63 @@ This module provides an interface to the Unix ``syslog`` library routines.
Refer to the Unix manual pages for a detailed description of the ``syslog``
facility.
This module wraps the system ``syslog``
module
. A pure Python
library that can speak to a syslog server is available in
the
:mod:`logging.handlers` module as :class:`SysLogHandler`.
This module wraps the system ``syslog``
family of routines
. A pure Python
library that can speak to a syslog server is available in
the
:mod:`logging.handlers` module as :class:`SysLogHandler`.
The module defines the following functions:
.. function:: syslog([priority,] message)
Send the string *message* to the system logger. A trailing newline is
added if necessary. Each message is tagged with a priority composed
of a *facility* and a *level*. The optional *priority* argument, which
defaults to :const:`LOG_INFO`, determines the message priority. If the
facility is not encoded in *priority* using logical-or (``LOG_INFO |
LOG_USER``), the
value given in the :func:`openlog` call is used.
Send the string *message* to the system logger. A trailing newline is
added
if necessary. Each message is tagged with a priority composed of a
*facility* and a *level*. The optional *priority* argument, which defaults
to :const:`LOG_INFO`, determines the message priority. If the facility is
not encoded in *priority* using logical-or (``LOG_INFO | LOG_USER``), the
value given in the :func:`openlog` call is used.
If :func:`openlog` has not been called prior to the call to
:func:'syslog',
``openlog()`` will be called with no arguments.
If :func:`openlog` has not been called prior to the call to
:func:`syslog`,
``openlog()`` will be called with no arguments.
.. function:: openlog([ident[, logopt[, facility]]])
Logging options of subsequent :func:`syslog` calls can be set by
calling :func:`openlog`. :func:`syslog` will call :func:`openlog`
with no arguments
if the log is not currently open.
Logging options of subsequent :func:`syslog` calls can be set by
calling
:func:`openlog`. :func:`syslog` will call :func:`openlog` with no arguments
if the log is not currently open.
The optional *ident* keyword argument is a string which is prepended
to every message, and defaults to ''sys.argv[0]'' with leading
path components stripped. The optional *logopt* keyword argument
(default=0) is a bit field - see below for possible values to combine.
The optional *facility* keyword argument (default=:const:`LOG_USER`)
sets the default facility for messages which do not have a facility
explicitly encoded.
The optional *ident* keyword argument is a string which is prepended to every
message, and defaults to ``sys.argv[0]`` with leading path components
stripped. The optional *logopt* keyword argument (default is 0) is a bit
field -- see below for possible values to combine. The optional *facility*
keyword argument (default is :const:`LOG_USER`) sets the default facility for
messages which do not have a facility explicitly encoded.
.. versionchanged::3.2
In previous versions, keyword arguments were not allowed, and *ident*
was required. The default for *ident* was dependent on the system
libraries, and often was ''python'' instead of the name of the
python program file.
.. versionchanged:: 3.2
In previous versions, keyword arguments were not allowed, and *ident* was
required. The default for *ident* was dependent on the system libraries,
and often was ``python`` instead of the name of the python program file.
.. function:: closelog()
Reset the syslog module values and call the system library
''closelog()''.
Reset the syslog module values and call the system library ``closelog()``.
This causes the module to behave as it does when initially imported.
For example, :func:'openlog' will be called on the first :func:'syslog'
call (if :func:'openlog' hasn't already been called), and *ident*
and other :func:'openlog'
parameters are reset to defaults.
This causes the module to behave as it does when initially imported.
For
example, :func:`openlog` will be called on the first :func:`syslog` call (if
:func:`openlog` hasn't already been called), and *ident* and other
:func:`openlog`
parameters are reset to defaults.
.. function:: setlogmask(maskpri)
Set the priority mask to *maskpri* and return the previous mask value.
Calls to :func:`syslog` with a priority level not set in *maskpri*
are ignored. The default is to log all priorities. The function
``LOG_MASK(pri)`` calculates the mask for the individual priority
*pri*. The function ``LOG_UPTO(pri)`` calculates the mask for all
priorities up to and including
*pri*.
Set the priority mask to *maskpri* and return the previous mask value.
Calls
to :func:`syslog` with a priority level not set in *maskpri* are ignored.
The default is to log all priorities. The function ``LOG_MASK(pri)``
calculates the mask for the individual priority *pri*. The function
``LOG_UPTO(pri)`` calculates the mask for all priorities up to and including
*pri*.
The module defines the following constants:
...
...
@@ -101,11 +97,11 @@ A simple set of examples::
syslog.syslog('Processing started')
if error:
syslog.syslog(syslog.LOG_ERR, 'Processing started')
syslog.syslog(syslog.LOG_ERR, 'Processing started')
An example of setting some log options, these would include the process ID
in logged messages, and write the messages to the destination facility
used for
mail logging::
An example of setting some log options, these would include the process ID
in
logged messages, and write the messages to the destination facility used for
mail logging::
syslog.openlog(logopt=syslog.LOG_PID, facility=syslog.LOG_MAIL)
syslog.syslog('E-mail processing initiated...')
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