Pylint warns if you have “more than X” for a lot things like local variables, number of arguments, number of member variables, etc.

For most of these the limits are in the 5 - 9 range but for lines in a function/method the limit is 50 lines.

I agree with this. One line functions are okay sometimes but 50 line functions can be fine as well if clear and well written.

A lot depends on the cyclomatic complexity: how many loops and branches, how drastically the indentation varies basically.

So I disagree with how strenuously Uncle Bob harps on short methods, although paradoxically I do agree many methods in the wild are too long. Most of them grew to be too long because it’s easier to add a few lines to an existing method than to refactor things —- particularly if a code review is required.