Assume I have a list of words, and I want to find the number of times each word appears in that list. An obvious way to do this is: words = "apple banana apple strawberry banana lemon" uniques = set(words.split()) freqs = [(item, words.split().count(item)) for item in uniques] print(freqs) But I find this code not very good, because the program runs through the word list twice, once to build the set, and a second time to count the number of appearances. Of course, I could write a function to run through the list and do the counting, but that wouldn't be so Pythonic. So, is there a more efficient and Pythonic way? Continue reading...
