combine list of lists in python (similar to string.join but as a list comprehension?)

If you had a long list of lists in the format `[['A',1,2],['B',3,4]]` and you wanted to combine it into `['A, 1, 2', 'B, 3, 4']` is there a easy list comprehension way to do so? I do it like this: ``` this_list = [['A',1,2],['B',3,4]] final = list() for x in this_list: final.append(', '.join([str(x) for x in x])) ``` But is this possible to be done as a one-liner? Thanks for the answers. I like the map() based one. I have a followup question - if the sublists were instead of the format `['A',0.111,0.123456]` would it be possible to include a string formatting section in the list comprehension to truncate such as to get out `'A, 0.1, 0.12'` Once again with my ugly code it would be like: ``` this_list = [['A',0.111,0.12345],['B',0.1,0.2]] final = list() for x in this_list: x = '{}, {:.1f}, {:.2f}'.format(x[0], x[1], x[2]) final.append(x) ``` I solved my own question: ``` values = ['{}, {:.2f}, {:.3f}'.format(c,i,f) for c,i,f in values] ```