tenhou_opponents.py

#!/usr/bin/python
import requests
import re
import sys
from collections import Counter

if len(sys.argv) < 2:
    sys.exit("usage: python {} player-id".format(sys.argv[0]))

ranking_pl = requests.get("http://arcturus.su/tenhou/ranking/ranking.pl?name={}".format(sys.argv[1]))

re_points = re.compile('\([+-]\d+\\.\d\)')
opponents = []
for line in ranking_pl.text.split('\n'):
    # Identifies the non-interesting lines and ignores them
    if not line.endswith(')<br>'):
        continue
    match = [c.strip().replace('<br>', '') for c in line.split(' | ')]
    room = match[1]
    play_format = match[5]
    for opponent in re_points.sub('', match[8]).split():
        if opponent != sys.argv[1] and room == 'L0000' and play_format.startswith('四'):
            opponents.append(opponent)

counts = Counter(opponents).most_common()

for count in counts[::-1]:
    print("{:3d}: {}".format(count[1], count[0]))

print("{:d} total games".format(int(len(opponents)/3)))