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Python Flask print to console and log file simultaneously
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Title: Simultaneous Printing to Console and Logging to File in Python Flask
Introduction:
In this tutorial, we will explore how to print messages to the console and log them to a file simultaneously in a Python Flask application. Logging is a crucial aspect of software development, providing insights into the execution flow and potential issues. Flask comes with a built-in logging module that allows us to integrate logging seamlessly into our applications.
Requirements:
Code Example:
Let's create a simple Flask application with the ability to print messages to the console and log them to a file.
Explanation:
We create a Flask application instance.
We configure the logging by creating a log formatter and a rotating file handler. The log formatter defines the structure of the log messages, and the rotating file handler ensures that the log file does not grow indefinitely by creating backups when it reaches a certain size.
We add the log handler to the Flask application's logger and set the logging level to INFO.
We define a route ('/') that demonstrates logging by logging an informational message, a warning, and an error.
If the script is run directly (not imported as a module), the Flask application is started with debugging enabled.
Execution:
Introduction:
In this tutorial, we will explore how to print messages to the console and log them to a file simultaneously in a Python Flask application. Logging is a crucial aspect of software development, providing insights into the execution flow and potential issues. Flask comes with a built-in logging module that allows us to integrate logging seamlessly into our applications.
Requirements:
Code Example:
Let's create a simple Flask application with the ability to print messages to the console and log them to a file.
Explanation:
We create a Flask application instance.
We configure the logging by creating a log formatter and a rotating file handler. The log formatter defines the structure of the log messages, and the rotating file handler ensures that the log file does not grow indefinitely by creating backups when it reaches a certain size.
We add the log handler to the Flask application's logger and set the logging level to INFO.
We define a route ('/') that demonstrates logging by logging an informational message, a warning, and an error.
If the script is run directly (not imported as a module), the Flask application is started with debugging enabled.
Execution: