python set global logging level
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Title: Python Tutorial - Setting Global Logging Level with logging Module
Introduction:
The logging module in Python provides a flexible framework for emitting log messages from Python programs. One powerful feature it offers is the ability to set a global logging level, controlling the verbosity of log messages across the entire application. In this tutorial, we will explore how to set the global logging level using the logging module with practical code examples.
Step 1: Import the logging module
Start by importing the logging module into your Python script or application.
Step 2: Configure logging basic configuration
Before setting the global logging level, it's essential to configure the logging system. This is typically done using basicConfig. The basic configuration includes specifying the format of log messages, the output stream (console or file), and other optional parameters.
In the example above, we set the default logging level to INFO and specify a log message format that includes the timestamp, log level, and the actual log message.
Step 3: Set the global logging level
Now, you can set the global logging level using the logging module. The logging levels include DEBUG, INFO, WARNING, ERROR, and CRITICAL. You can adjust the level according to your application's requirements.
In the above example, we set the global logging level to DEBUG. This means that all log messages with a level of DEBUG and above will be captured and displayed.
Step 4: Example usage with logging statements
Now that the global logging level is set, you can use logging statements throughout your application. Log messages with a level equal to or above the global logging level will be captured and displayed.
In this example, since the global logging level is set to DEBUG, all log messages from DEBUG to CRITICAL will be displayed. If you change the global logging level to WARNING, only log messages with a level of WARNING and above will be displayed.
Conclusion:
Setting the global logging level is a powerful way to control the verbosity of log messages in your Python application. It allows you to focus on specific log levels during development and easily switch to more detailed logging for debugging purposes. Utilizing the logging module effectively enhances the maintainability and troubleshooting capabilities of your Python programs.
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