Pythonic way of retry running a function [duplicate]

Answer 1

The pattern I use retries a limited number of times, sleeping for a short, exponentially increasing time interval between each attempt, and finally raising the last-seen exception after repeated failure:

def wrappedRequest( self, uri, args ):
    lastException = None 
    interval = 1.0
    for _ in range(3):
        try:
            result = requests.post(uri, args)
            return result
        except Exception as e:
            lastException = e

        time.sleep(interval)
        interval *= 2.0
    raise lastException 

(I actually specifically check for HTTPError, URLError, IOError, and BadStatusLine exceptions rather than the broad net of Exception.)