Python获取暗黑破坏神3战网前1000命位玩家的英雄技能统计

说实在的个人对游戏并没有多大的兴趣，但唯独对暴雪的Diablo系列很有感情，去年年初开始玩Diablo3，断断续续，感觉最麻烦的是选择技能，每次版本更新可能都有更优的build，这对于我这样的业余玩家来说可不是件好事，好在宏伟秘境后有了天梯，借鉴排名在前的高级玩家们build总没错，于是花了点时间写了这个脚本。

脚本只是统计了主动技能、被动技能和传奇宝石的使用情况，理论上统计其它如装备等信息也是一样简单可行的，但Diablo装备的生成机制使得统计这个没有多大意义，相同的装备属性可能各有优劣，难以比较，而且某些装备坑爹的掉率也不是你想要就能有的。

题外话，不得不说Python太适合写这类功能相对简单的脚本了，一个字：快。

# -*- coding: utf-8 -*-
"""
Diablo3 排名前1000玩家英雄使用技能统计

python diablo.py help
python diablo.py [barbarian|crusader|demon-hunter|monk'|witch-doctor|wizard]

默认使用的是亚服的数据，如果需要 * 或欧服，更改`_rank_page`和`_api`变量地址即可

Copyright (c) 2015 JinnLynn <eatfishlin@gmail.com>
Released under the terms of the MIT license.
"""
from __future__ import unicode_literals, print_function, absolute_import
import os
import sys
import urllib2
import json
import re

__version__ = '1.0.0'
__author__ = 'JinnLynn <eatfishlin@gmail.com>'
__license__ = 'The MIT License'
__copyright__ = 'Copyright 2015 JinnLynn'

# 排名页面
_rank_page = 'http://tw.battle.net/d3/zh/rankings/'
# api
_api = 'http://tw.battle.net/api/d3/'
_api_profile = os.path.join(_api, 'profile')
_api_data = os.path.join(_api, 'data')

_hero_classes = {
 'barbarian': '野蠻人', 'crusader': '聖教軍', 'demon-hunter': '狩魔獵人',
 'monk': '武僧', 'witch-doctor': '巫醫', 'wizard': '秘術師'}

_retry = 5

_hero_class = ''
_active_skills = {}
_passive_skills = {}
_unique_gems = {}

def _clear_output(msg=''):
 sys.stdout.write('\r{:30}'.format(' '))
 sys.stdout.write('\r{}'.format(msg))
 sys.stdout.flush()

def _process(stated, total):
 msg = '英雄数据分析中... {}/{}'.format(stated, total)
 _clear_output(msg)

def _get(url, is_json=True):
 # print('GET: ', url)
 retry = 5 if _retry < 1 else _retry
 while retry > 0:
   try:
     req = urllib2.urlopen(url.encode('utf8'), timeout=10)
     return json.load(req) if is_json else req.read()
   except KeyboardInterrupt, e:
     raise e
   except Exception, e:
     retry -= 1
     # print('retry', retry, e)
     # raise e

def _api_url(*args, **kwargs):
 slash = kwargs.get('slash', False)
 args = [unicode(arg) for arg in args]
 url = os.path.join(*args).rstrip('/')
 return url + '/' if slash else url

def get_era():
 req = urllib2.urlopen(_rank_page)
 return req.geturl().split('/')[-2]

def get_rank_page_url(era):
 url_part = 'rift-'
 if _hero_class == 'demon-hunter':
   url_part += 'dh'
 elif _hero_class == 'witch-doctor':
   url_part += 'wd'
 else:
   url_part += _hero_class
 return os.path.join(_rank_page, 'era', era, url_part)

def fetch_rank_list():
 tags = []
 try:
   _clear_output('获取当前游戏 * ...')
   era = get_era()
   _clear_output('获取当前排名前1000的玩家...')
   url = get_rank_page_url(era)
   html = _get(url, is_json=False)
   # re parse
   lst = re.findall(
     r"a href=\"(.*)\" title=.*class=\"icon-profile link-first\">",
     html.decode('utf8'),
     re.UNICODE)
   # BeautifulSoup parse
   # import bs4
   # soup = bs4.BeautifulSoup(html)
   # lst = soup.select('#ladders-table tbody tr .battletag a')['href']
   for item in lst:
     try:
       tags.append(item.split('/')[-2])
     except:
       pass
 except Exception, e:
   print('fetch rank list fail. {}'.format(_rank_page))
   raise e
 return tags

def get_hero(player_tag):
 url = _api_url(_api_profile, player_tag, slash=True)
 data = _get(url)
 hero_selected = None
 for hero in data.get('heroes', []):
   if hero['class'] != _hero_class:
     continue
   last_updated = hero_selected['last-updated']
   # 最近使用的英雄
   if hero_selected is None or last_updated < hero['last-updated']:
     hero_selected = hero
 if not hero_selected:
   raise Exception('{} hero missing.'.format(player_tag))
 url = _api_url(_api_profile, player_tag, 'hero', hero_selected['id'])
 return _get(url)

# 主动技能符文
def stat_active_skill_rune(skill_slug, rune):
 global _active_skills
 if not rune:
   return
 slug = rune.get('slug')
 if slug in _active_skills[skill_slug]['rune']:
   _active_skills[skill_slug]['rune'][slug]['count'] += 1
 else:
   _active_skills[skill_slug]['rune'][slug] = {
     'count': 1,
     'name': rune.get('name')
   }

# 主动技能
def stat_active_skill(active):
 global _active_skills
 slug = active.get('skill', {}).get('slug')
 # d3 API 返回的数据中可能存在空的数据
 if not slug:
   return
 if slug in _active_skills:
   _active_skills[slug]['count'] += 1
 else:
   _active_skills[slug] = {
     'count': 1,
     'name': active.get('skill').get('name'),
     'rune': {}
   }
 stat_active_skill_rune(slug, active.get('rune'))

# 被动技能
def stat_passive_skill(passive):
 global _passive_skills
 slug = passive.get('skill', {}).get('slug')
 # d3 API 返回的数据中可能存在空的数据
 if not slug:
   return
 if slug in _passive_skills:
   _passive_skills[slug]['count'] += 1
 else:
   _passive_skills[slug] = {
     'count': 1,
     'name': passive.get('skill').get('name')
   }

def stat_unique_gem(items):
 global _unique_gems

def get_gem(tooltip):
   if not tooltip:
     return None, None
   url = _api_url(_api_data, tooltip)
   data = _get(url)
   gems = data.get('gems')
   if not gems:
     return None, None
   gem = gems[0].get('item', {})
   return gem.get('id'), gem.get('name')

if not items:
   return

lst = [items.get(s, {}) for s in ['leftFinger', 'rightFinger', 'neck']]
 for tooltip in [d.get('tooltipParams', None) for d in lst]:
   id_, name = get_gem(tooltip)
   if not id_:
     continue
   if id_ in _unique_gems:
     _unique_gems[id_]['count'] += 1
   else:
     _unique_gems[id_] = {
       'count': 1,
       'name': name
     }

def stat(hero):
 global _active_skills, _passive_skills

map(stat_active_skill, hero.get('skills', {}).get('active', []))
 map(stat_passive_skill, hero.get('skills', {}).get('passive', []))

items = hero.get('items', {})
 stat_unique_gem(items)

def output(hero_stated, hero_stat_failed):
 def sort(data, count=10):
   d = sorted(data.items(), key=lambda d: d[1]['count'], reverse=True)
   return d if count <= 0 else d[0:count]

_clear_output()

# print('======')
 # print(hero_stated, hero_stat_failed)
 # print('======')
 # pprint(_active_skills)
 # print('======')
 # pprint(_passive_skills)
 # print('======')
 # pprint(_unique_gems)
 # pprint(_active_skills.items())
 # print('======')

print('\n=== RESULT ===\n')
 print('统计英雄数\n')
 print(' 成功: {} 失败: {}\n'.format(hero_stated, hero_stat_failed))

print('主动技能使用排名: ')
 for _, d in sort(_active_skills):
   runes = []
   for _, r in sort(d.get('rune', {})):
     runes.append('{name}[{count}]'.format(**r))
   d.update({'rune_rank': ', '.join(runes)})
   print(' {name}[{count}]: {rune_rank}'.format(**d))
 print()

print('被动技能使用排名: ')
 for _, d in sort(_passive_skills):
   print(' {name}[{count}]'.format(**d))
 print()

print('传奇宝石使用排名: ')
 for _, d in sort(_unique_gems):
   print(' {name}[{count}]'.format(**d))
 print()

def prepare():
 global _hero_class

def print_hc():
   print('仅支持以下英雄类型, 默认 demon-hunter:\n')
   for c, n in _hero_classes.items():
     print(c, ':', n)

if len(sys.argv) == 1:
   _hero_class = 'demon-hunter'
 elif len(sys.argv) > 2:
   sys.exit('参数错误')
 else:
   arg = sys.argv[1]
   if arg == 'help':
     print_hc()
     print('\nTips: 运行中可随时Ctrl+C终止以获得已统计的数据结果')
     sys.exit()
   elif arg not in _hero_classes:
     print_hc()
     sys.exit()
   else:
     _hero_class = arg

def main():
 prepare()
 print('待分析的英雄类型:', _hero_classes[_hero_class])

hero_stated = 0
 hero_stat_failed = 0
 try:
   tags = fetch_rank_list()
   if not tags:
     raise Exception('parse battle.net rank page fail.')
 except Exception, e:
   print('error,', e)
   sys.exit()

total = len(tags)

for tag in tags:
   try:
     hero = get_hero(tag)
     if not hero:
       raise Exception('no hero data')
     stat(hero)
     hero_stated += 1
     _process(hero_stated, total)
   except KeyboardInterrupt:
     break
   except Exception, e:
     # print('Fail: ', tag, e, hero)
     hero_stat_failed += 1

output(hero_stated, hero_stat_failed)

if __name__ == '__main__':
 main()