This is more an open discussion than an issue.

As a newbie influxdb python user, I'm a bit surprised by the from_dsn behavior. I don't get the point of using fake URL like 'influxdb://host:port/database' (unless those are working under some other conditions?). I would have expected it to work with an actual URL. It's still easy to provide extra kwargs to specify e.g. database. or UDP port.

This would be IMHO more intuitive, and could still work with #556.

I can write a patch if we agree on this.