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，如果需要美服或欧服，更改`_rank_page`和`_api`变量地址即可

Copyright (c) 2015 JinnLynn  
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  '
__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   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('获取当前游戏纪元...')
    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   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()
 

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