A python decorator that logs execution time.

timer.py

from functools import wraps
import logging
import time

logger = logging.getLogger(__name__)


def timed(func):
    """This decoratorlogs the execution time for the decorated function."""

    @wraps(func)
    def wrapper(*args, **kwargs):
        start = time.time()
        result = func(*args, **kwargs)
        end = time.time()
        logger.debug(
            "{} took {:03d} ms".format(func.__name__, int(1000 * (end - start)))
        )
        return result

    return wrapper