Retry decorator with exponential backoff

retry_decorator.py

import time
from functools import wraps


def retry(
    ExceptionToCheck: Exception,
    num_tries: int = 5,
    delay_sec: int = 3,
    backoff: int = 2,
):
    """Retry calling the decorated function using an exponential backoff.

    Adapted from https://stackoverflow.com/a/52420132
    """

    def deco_retry(f):
        @wraps(f)
        def f_retry(*args, **kwargs):
            mtries, mdelay = num_tries, delay_sec
            while mtries > 1:
                try:
                    return f(*args, **kwargs)
                except ExceptionToCheck:
                    time.sleep(mdelay)
                    mtries -= 1
                    mdelay *= backoff
            return f(*args, **kwargs)

        return f_retry  # true decorator

    return deco_retry