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09 Dec 2023

Tenacity: a retrying library for python

jd/tenacity: Retrying library for Python1:

from tenacity import (
    retry,
    stop_after_attempt,
    wait_exponential,
    before_sleep_log,
)

# ... 

@retry(
	stop=stop_after_attempt(10),  # Maximum number of retries
	wait=wait_exponential(multiplier=1, min=1, max=60),  # Exponential backoff
	before_sleep=before_sleep_log(logger, logging.INFO),
)
@staticmethod
def do_basic_uri_ops_when_crawling(
	# ...
	pass

Related: 231207-1529 requests and urllib3 exceptions adventures

This is much better than the various retrying mechanisms in requests (e.g. needing session adapters: Handling Retries in Python Requests – Majornetwork), and likely better than most reinvented wheels (231206-1722 Overengineered solution to retrying and exceptions in python).

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