A decade ago meetup.com was the place to look - if you wanted you could have gone to a different meet up every night, from Linux user group, python testing grou

A decade ago meetup.com was the place to look - if you wanted you could have gone to a different meet up every night, from Linux user group, python testing group, London Java community etc. It seems like some of these are still active on meetup.com, so that might be a good starting point.