# import logging

**[import logging](https://docs.python.org/3/library/logging.html)** is a Python import that logs messages at different severity levels: DEBUG, INFO, WARNING, ERROR, CRITICAL. Use it instead of `print()` for production code.

## Example

```python
# Python
# description: configure logging, log at different levels

import logging

# Configure basic logging
logging.basicConfig(level=logging.INFO, 
                    format="%(asctime)s - %(levelname)s - %(message)s")

# Log messages
logging.debug("Debug message (not shown)")
logging.info("Application started")
logging.warning("This is a warning")
logging.error("An error occurred")
logging.critical("Critical failure")

# Get logger for a module
logger = logging.getLogger(__name__)
logger.info("Module-specific message")

# Log exceptions
try:
    1 / 0
except ZeroDivisionError:
    logger.exception("Division by zero occurred")
```

## Common functions

- `logging.basicConfig(level, format, filename)`: configure logging
- `logging.debug(msg)`: debug message
- `logging.info(msg)`: info message
- `logging.warning(msg)`: warning message
- `logging.error(msg)`: error message
- `logging.critical(msg)`: critical message
- `logging.getLogger(name)`: get logger for module
- `logger.exception(msg)`: log exception with traceback
- Levels: DEBUG < INFO < WARNING < ERROR < CRITICAL