Optimizing Python Output in Docker with PYTHONUNBUFFERED

The text explains the use of the PYTHONUNBUFFERED environment variable in a Dockerfile when dockerizing a Django application. Setting PYTHONUNBUFFERED to a non-empty value ensures that the Python output is sent directly to the terminal without being buffered, allowing real-time viewing of application logs and preventing loss of output in case of a crash. It has no impact on the input stream and is recommended for use in a Docker container to avoid complications and ensure direct output printing. The option can impact performance depending on the hardware/environment, but can be left on with the buffer flushed directly from the application when needed.

• PYTHONUNBUFFERED in a Dockerfile ensures unbuffered Python output
• It allows real-time viewing of application logs
• No impact on the input stream
• Recommended for use in a Docker container
• Can impact performance depending on hardware/environment