在python中每行使用不同数量的子图进行子绘图

Again, I am very new to python. Below I provide my code (for classification with feature selection), not the data since it is rather high dimensional, but I believe that the problem is quite data-independent. My question is two-fold: I want axis labels for all subplots, and I would like to know how I can subplot where the number of subplots can be different per row (I have 14 subplots, currently in three rows):Again, I am very new to python. Below I provide