[Python-ideas] Allow key='attribute_name' to various sorting functions

I often want to sort objects by an attribute. It's cumbersome to do this: sorted(entries, key=lambda entry: entry.datetime_created) Why not allow this instead: sorted(entries, key='datetime_created') The `sorted` function can check whether the `key` argument is a string, and if so do an attribute lookup. Since I see no other possible use of a string input to `key`, I don't see how this feature would harm anyone. What do you think? Thanks, Ram.