8000 Merge pull request #553 from realpython/python-logging-update · realpython/materials@cfa3804 · GitHub
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Merge pull request #553 from realpython/python-logging-update
Add materials for the logging tutorial
2 parents 2758339 + 2a211e8 commit cfa3804

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‎python-logging/README.md

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# Logging in Python
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This folder provides the code examples for the Real Python tutorial [Logging in Python](https://realpython.com/python-logging/).

‎python-logging/logging_custom_logger.py

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import logging
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logger = logging.getLogger(__name__)
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logger.warning("Look at my logger!")

‎python-logging/logging_debug.py

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import logging
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logging.basicConfig(level=logging.DEBUG)
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logging.debug("This will get logged.")

‎python-logging/logging_stack_traces.py

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import logging
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logging.basicConfig(
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filename="app.log",
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encoding="utf-8",
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filemode="a",
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format="{asctime} - {levelname} - {message}",
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style="{",
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datefmt="%Y-%m-%d %H:%M",
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)
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donuts = 5
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guests = 0
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try:
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donuts_per_guest = donuts / guests
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except ZeroDivisionError:
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logging.error("DonutCalculationError", exc_info=True)

‎python-logging/logging_style.py

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import logging
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logging.basicConfig(
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format="{asctime} - {levelname} - {message}",
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style="{",
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datefmt="%Y-%m-%d %H:%M",
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)
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logging.error("Something went wrong!")

‎python-logging/logging_to_a_file.py

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import logging
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logging.basicConfig(
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filename="app.log",
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encoding="utf-8",
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filemode="a",
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format="{asctime} - {levelname} - {message}",
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style="{",
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datefmt="%Y-%m-%d %H:%M",
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)
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logging.warning("Save me!")

‎python-logging/logging_with_filter.py

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import logging
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def show_only_debug(record):
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return record.levelname == "DEBUG"
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logger = logging.getLogger(__name__)
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logger.setLevel("DEBUG")
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formatter = logging.Formatter("{levelname} - {message}", style="{")
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console_handler = logging.StreamHandler()
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console_handler.setLevel("DEBUG")
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console_handler.setFormatter(formatter)
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console_handler.addFilter(show_only_debug)
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logger.addHandler(console_handler)
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file_handler = logging.FileHandler("app.log", mode="a", encoding="utf-8")
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file_handler.setLevel("WARNING")
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file_handler.setFormatter(formatter)
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logger.addHandler(file_handler)
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logger.debug("Just checking in!")
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logger.warning("Stay curious!")
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logger.error("Stay put!")

‎python-logging/logging_with_handlers_and_formatters.py

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import logging
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logger = logging.getLogger(__name__)
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logger.setLevel("DEBUG")
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formatter = logging.Formatter("{levelname} - {message}", style="{")
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console_handler = logging.StreamHandler()
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console_handler.setLevel("DEBUG")
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console_handler.setFormatter(formatter)
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logger.addHandler(console_handler)
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file_handler = logging.FileHandler("app.log", mode="a", encoding="utf-8")
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file_handler.setLevel("WARNING")
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file_handler.setFormatter(formatter)
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logger.addHandler(file_handler)
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logger.debug("Just checking in!")
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logger.warning("Stay curious!")
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logger.error("Stay put!")

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