How to create a log file in python?
How to create a log file in python?
387
03-Mar-2025
Updated on 05-Mar-2025
Khushi Singh
05-Mar-2025The core role of logging in software development consists of enabling developers to detect errors as well as track application behaviors while monitoring system execution. A built-in logging module in Python enables developers to handle log file creation as well as management functions efficiently.
Your application requires the import of the logging module for log file creation while you must set parameters such as log level along with file name and format. Different message levels exist in Python logging setup including DEBUG, INFO, WARNING and ERROR, and CRITICAL which represent the message importance level.
The creation requires the setup of a logger and definition of the log format alongside the selection of the log file destination. Users usually employ the
basicConfig()function to establish these configurations. Application events are stored in log files which provide developers with examination capability during troubleshooting.Using Python developers can enable log file rotation to limit their file size growth. The
logging.handlersmodule handles automatic log file management through its file rotation capabilities based on file size or elapsed time.Developers can keep their codebase clean and diagnose application problems efficiently while maintaining smooth performance through proper logging but unnecessary dependence on print statements is prevented.