Nov-19-2018, 08:03 PM
Or, if you'd rather not build a new list, you can use indexes:
>>> my_string = [[89, 111, 117, 32], [104, 97, 118, 101, 32], [109, 97, 100, 101, 32], [109, 121, 32], [115, 111, 117, 108, 46]] >>> for outer_ndx, out in enumerate(my_string): ... for inner_ndx, inner in enumerate(out): ... if inner < 65: ... my_string[outer_ndx][inner_ndx] = None ... >>> my_string [[89, 111, 117, None], [104, 97, 118, 101, None], [109, 97, 100, 101, None], [109, 121, None], [115, 111, 117, 108, None]]