Suppоse d hаs been аssigned а dictiоnary having bоth string (str) keys and values. Create a new dictionary dnew which has integer keys 1, 2, 3, .., such that d[k] is the number of keys in d that have length k. For example, if d={"one":"a", "two":"b", "three":"c"}, dnew should be {3:2, 5:1} since there are two keys of length 3 ("one","two") and one of length 5 ("three").