# Words by the Numbers 1, Exercise 3: a letter profile
# Compare the letter profile of two texts: the commonest letter,
# the share of vowels, and the number of different letters used.
from collections import Counter

texts = {
    "Austen": ("It is a truth universally acknowledged, that a single man in "
               "possession of a good fortune, must be in want of a wife."),
    "invented": ("The rain fell on the town and the river rose. The people of "
                 "the town watched the river and waited."),
}
for name, text in texts.items():
    letters = [ch for ch in text.lower() if ch.isalpha()]
    counts = Counter(letters)
    top, n = counts.most_common(1)[0]
    vowels = sum(counts[v] for v in "aeiou") / len(letters)
    print(f"{name:9} letters={len(letters):3d} commonest={top} ({n / len(letters):.1%}) vowels={vowels:.1%} distinct={len(counts)}")

# Output when run:
# Austen    letters= 92 commonest=a (9.8%) vowels=40.2% distinct=22
# invented  letters= 77 commonest=e (18.2%) vowels=37.7% distinct=16