Exponential BackOff implemented in python

retry-exponentail-backoff.py

import time

DEFAULT_TIMEOUT_IN_SEC = 1
DEFAULT_MAX_ATTEMPTS = 5


def retry(**kwargs):
    def inner(func):
        attempt = 0
        max_attempts = kwargs["attempts"] if kwargs["attempts"] else DEFAULT_MAX_ATTEMPTS
        timeout = kwargs["timeout"] if kwargs["timeout"] else DEFAULT_TIMEOUT_IN_SEC

        while attempt < max_attempts:

            try:
                func()
                break
            except Exception as e:
                print("ERROR: {}\n".format(e))

                attempt = attempt + 1
                timeout = 1 + (attempt * timeout)

                print(
                    "{}/{} attempts. Retrying after {}s...".format(
                        attempt, max_attempts, timeout
                    )
                )
                time.sleep(timeout)

    return inner


@retry(attempts=3, timeout=1)
def process():
    print("\nprocessing...")
    raise Exception("Cloud function failed")