A, logging module
1.1 log output locations:
- terminal
- File # is not specified, the default print-to-end (in this way can only be provided in the form. If you want to output to a file can not be printed to the terminal. There are limitations)
1.2 log format:
- % (Asctime) of the current time string s. The default format is "2003-07-0816: 49: 45,896." Milliseconds after the comma
- % (Name) s Logger name, not specified defaults to root
- % (Levelname) s in text form log level (debug debug, info message, warning warning, error error, critical danger)
- % (module) s call log output function module name message #% (message) s output
1.3 Time Format
- Here specified time format is used to replace the time format of the above asctime
1.4 log level
The relationship between the number corresponding level: default warning level, the level is the corresponding number is 30. By a level-controlled output, output only 30 levels 30, 40, 50 and level of content results.
10 --> debug
20 -> information
30 --> warning
40 --> error
50 --> critical
Note: root is the default log name is not specified, the default is the root.
II. Log configuration dictionary
# 1 , the log defines three output formats, format string may be used as the log "" " % (name) S Logger name, there is no default is the root % (levelno) S log level in digital form ( 10 , 20 , 30 , 40 , 50 ) % (levelname) S text log level (debug debug, info message, warning warning, error error, critical danger) % (pathname) S invoke the full path name of the module log output function, may not % filename (filename) s calling module log output function of % (Module1) S invoking module name of the log output function % (funcName) S calls the function name of the log output function % (lineno) D call log output function line statement where % (Created) F the current time, represented by a standard floating point representation UNIX time % , The number of milliseconds since the time of creating Logger (relativeCreated) d output log information % (asctime) s current time string. The default format is " 2003 - 07 - 08 16 : 49 : 45 , 896 ." Milliseconds after the comma % (Thread) D thread ID. It may not have % (threadName) S thread name. May not have % d process ID (process). May not % (Message) message user output S "" "
Output Format 2. Define log: when stressed !! specified therein% (name) s after logging module calls using logging.getLogger () log name
Third, use the logging module
1.
the logging is a package, which requires the use of at config, the getLogger
2.
Import logging.config # logging.getLogger are introduced together with this together, and then the prefix logging.config
Import Settings
3.
. 3,
load the configuration dictionary logging.config .dictConfig (settings.LOGGING_DIC)
4, output log
logger1 = logging.getLogger ( 'user transaction')
logger1.info ( 'Egon son alex transfer 300 million Mingbi')
Four, re
What is a regular: Regular is to use a bunch of special symbols to express a special law. This special symbols to get one kind of large string to match, according to such a specific rule to take your values.
