Hi,
I am creating a Python newsletter showcasing useful code snippets from
popular open-source libraries. I will also be providing a runnable demo
link to better understand the working.
Newsletter subscription link: https://www.pythonninja.xyz/subscribe
A sample snippet from the newsletter:
HTTP Request retrying with Backoffs - Technique for retrying failed HTTP
requests.
From Google Maps Services Python
(https://github.com/googlemaps/google-maps-services-python)
Demo link: https://repl.it/@PythonNinja/requestretries
"""
first_request_time: The time of the first request (None if no retries
have occurred).
retry_counter: The count of retries, or zero for the first attempt.
"""
if not first_request_time:
first_request_time = datetime.now()
elapsed = datetime.now() - first_request_time
if elapsed > self.retry_timeout:
raise googlemaps.exceptions.Timeout()
if retry_counter > 0:
# 0.5 * (1.5 ^ i) is an increased sleep time of 1.5x per iteration,
# starting at 0.5s when retry_counter=0. The first retry will occur
# at 1, so subtract that first.
delay_seconds = 0.5 * 1.5 ** (retry_counter - 1)
# Jitter this value by 50% and pause.
time.sleep(delay_seconds * (random.random() + 0.5))
Subscribe here: https://www.pythonninja.xyz/subscribe
Feedbacks and criticism are welcome.
--
https://mail.python.org/mailman/listinfo/python-list
