python 任务由Tenacity重试

Posted 2021-05-09

#github url: https://github.com/jd/tenacity

import random
from tenacity import retry

@retry
def do_something_unreliable():
    if random.randint(0, 10) > 1:
        raise IOError("Broken sauce, everything is hosed!!!111one")
    else:
        return "Awesome sauce!"

print(do_something_unreliable())

#Othter example
#Let's be a little less persistent and set some boundaries, such as the number of attempts before giving up.
@retry(stop=stop_after_attempt(7))
def stop_after_7_attempts():
    print("Stopping after 7 attempts")
    raise Exception
    
#We don't have all day, so let's set a boundary for how long we should be retrying stuff.
@retry(stop=stop_after_delay(10))
def stop_after_10_s():
    print("Stopping after 10 seconds")
    raise Exception
    
#You can combine several stop conditions by using the | operator
@retry(stop=(stop_after_delay(10) | stop_after_attempt(5)))
def stop_after_10_s_or_5_retries():
    print("Stopping after 10 seconds or 5 retries")
    raise Exception