default_logging 0.5.1

A Python package that provides ready-to-use logging configuration with enhanced formatters, and automatic directory creation. Simplifies logging setup with sensible defaults while supporting custom configurations.

default_logging

A Python package that provides ready-to-use logging configuration with enhanced formatters, and automatic directory creation. Simplifies logging setup with sensible defaults while supporting custom configurations.

Features

• Millisecond-precision timestamps in log output.
• Timezone-aware formatting (local or UTC with 'Z' suffix).
• YAML-based logging configuration for easy customization.
• Rotating file handler and console logging out-of-the-box.
• Automatic log directory creation for file handlers.

Usage

1. Import and configure logging:

from default_logging import configure_logging

configure_logging()

2. (Optional) Use your own config:

configure_logging(config_path="path/to/your_logging_config.yaml")

Example

from default_logging import configure_logging
import logging

configure_logging()
logger = logging.getLogger(__name__)
logger.info("Hello, world!")

Logging Configuration

The default configuration is defined in default_logging/logging_config.yaml:

• Formatters:
  • simple: UTC timestamps, millisecond precision.
  • simple_with_trace_context: Adds OpenTelemetry trace info to each log line.
• Handlers:
  • console: Logs to stdout.
  • rotating_file: Logs to logs/app.log with rotation.
• Root logger:
  • Level: DEBUG
  • Handlers: both console and file.

You can customize the YAML config or provide your own.

MillisecondFormatter

Custom formatters in default_logging/millisecond_formatter.py provide:

• %f for milliseconds
• %z for timezone offset (+HH:MM, -HH:MM, or Z for UTC)

OpenTelemetry Integration

The package is compatible with OpenTelemetry.

Check example usage here, and then execute opentelemetry-instrument --traces_exporter=console --metrics_exporter=none --logs_exporter=none python app.py with formatter configured to simple_with_trace_context to see logs that contain trace IDs and span IDs.

2026-01-01T00:00:00.389Z INFO [__main__] [app.py:15] [trace_id=2435d597af884b3104d8ca18a310913d span_id=ffc6c2f74d71a441 trace_sampled=True] - Hello with OpenTelemetry trace context!

License

MIT License