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Commit89b0d26

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add logging tutorial
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‎README.md

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@@ -109,6 +109,7 @@ This is a repository of all the tutorials of [The Python Code](https://www.thepy
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-[How to Download and Upload Files in FTP Server using Python](https://www.thepythoncode.com/article/download-and-upload-files-in-ftp-server-using-python). ([code](python-standard-library/download-and-upload-files-in-ftp))
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-[How to Work with JSON Files in Python](https://www.thepythoncode.com/article/working-with-json-files-in-python). ([code](python-standard-library/working-with-json))
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-[How to Use Regular Expressions in Python](https://www.thepythoncode.com/article/work-with-regular-expressions-in-python). ([code](python-standard-library/regular-expressions))
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-[Logging in Python](https://www.thepythoncode.com/article/logging-in-python). ([code](python-standard-library/logging))
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-###[Using APIs](https://www.thepythoncode.com/topic/using-apis-in-python)
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-[How to Automate your VPS or Dedicated Server Management in Python](https://www.thepythoncode.com/article/automate-veesp-server-management-in-python). ([code](general/automating-server-management))
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#[Logging in Python](https://www.thepythoncode.com/article/logging-in-python)
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importlogging
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# make a basic logging configuration
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# here we set the level of logging to DEBUG
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logging.basicConfig(
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level=logging.DEBUG
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)
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# make a debug message
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logging.debug("This is a simple debug log")
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# make an info message
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logging.info("This is a simple info log")
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# make a warning message
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logging.warning("This is a simple warning log")
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# make an error message
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logging.error("This is a simple error log")
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# make a critical message
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logging.critical("This is a simple critical log")
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importlogging
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logging.basicConfig(
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level=logging.INFO,
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format="%(asctime)s - %(levelname)s - %(message)s",
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)
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logging.info("This is an info message!")
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importlogging
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logging.basicConfig(
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level=logging.INFO,
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format="%(asctime)s - %(levelname)s - %(message)s",
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datefmt="[%Y-%m-%d] %H:%M:%S",
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)
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logging.info("This is an info message!")
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importlogging
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importmath
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logging.basicConfig(level=logging.DEBUG,
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handlers=[logging.FileHandler('logs.log','a','utf-8')],
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format="%(asctime)s %(levelname)-6s - %(funcName)-8s - %(filename)s - %(lineno)-3d - %(message)s",
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datefmt="[%Y-%m-%d] %H:%M:%S - ",
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)
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logging.info("This is an info log")
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defsquare_root(x):
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logging.debug(f"Getting the square root of{x}")
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try:
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result=math.sqrt(x)
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exceptValueError:
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logging.exception("Cannot get square root of a negative number")
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# or
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# logging.error("Cannot get square root of a negative number", exc_info=True)
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returnNone
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logging.info(f"The square root of{x} is{result:.5f}")
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returnresult
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square_root(5)
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square_root(-5)
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importlogging
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# return a logger with the specified name & creating it if necessary
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logger=logging.getLogger(__name__)
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# create a logger handler, in this case: file handler
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file_handler=logging.FileHandler("file.log")
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# set the level of logging to INFO
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file_handler.setLevel(logging.INFO)
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# create a logger formatter
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logging_format=logging.Formatter("%(asctime)s - %(levelname)s - %(message)s")
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# add the format to the logger handler
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file_handler.setFormatter(logging_format)
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# add the handler to the logger
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logger.addHandler(file_handler)
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# use the logger as previously
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logger.critical("This is a critical message!")
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importlogging
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# make a debug message
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logging.debug("This is a simple debug log")
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# make an info message
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logging.info("This is a simple info log")
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# make a warning message
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logging.warning("This is a simple warning log")
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# make an error message
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logging.error("This is a simple error log")
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# make a critical message
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logging.critical("This is a simple critical log")
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# just mapping logging level integers into strings for convenience
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logging_levels= {
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logging.DEBUG:"DEBUG",# 10
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logging.INFO:"INFO",# 20
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logging.WARNING:"WARNING",# 30
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logging.ERROR:"ERROR",# 40
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logging.CRITICAL:"CRITICAL",# 50
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}
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# get the current logging level
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print("Current logging level:",logging_levels.get(logging.root.level))
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# get the current logging format
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print("Current logging format:",logging.BASIC_FORMAT)

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