On 05/07/2023 01:27, Chris Angelico via Python-list wrote: >> So I'm curious about how big this "big problem with MI" is in > > Who said it's a big problem with MI?
I think it's a very common perception, particularly with newer programmers who have never used it in anger. Any time anyone discusses MI it seems somebody will jump in and warn about diamonds etc. As a result many steer clear of MI, which is a shame. My personal experience of MI is that used appropriately it is a powerful and useful tool. But it must be used in a true is-a type relationship and not just as a kind of cheap reuse mechanism - that's when problems start. Also, mixin style MI is particularly powerful but the protocol between mixin and "subclass" needs to be carefully designed and documented. Like any powerful tool you need to understand the costs of use as well as the potential benefits. -- Alan G Author of the Learn to Program web site http://www.alan-g.me.uk/ http://www.amazon.com/author/alan_gauld Follow my photo-blog on Flickr at: http://www.flickr.com/photos/alangauldphotos -- https://mail.python.org/mailman/listinfo/python-list