python爬虫分布式获取数据的实例方法

# coding:utf-8
from tasks.workers import app
from page_get import user as user_get
from db.seed_ids import get_seed_ids, get_seed_by_id, insert_seeds, set_seed_other_crawled
@app.task(ignore_result=True)
def crawl_follower_fans(uid):
  seed = get_seed_by_id(uid)
  if seed.other_crawled == 0:
    rs = user_get.get_fans_or_followers_ids(uid, 1

    rs.extend(user_get.get_fans_or_followers_ids(uid, 2))
    datas = set(rs)
    # 重复数据跳过插入
    if datas:
      insert_seeds(datas)
    set_seed_other_crawled(uid)
@app.task(ignore_result=True)
def crawl_person_infos(uid):
  ""
  根据用户i来爬取用户相关资料和用户的关注数和粉丝数（由于微博服务端限制，默认爬取前五页，企业号的关注和粉丝也不能查看）
  :param uid: 用户id
  :return:
  """
  if not uid:
    return
  # 由于与别的任务共享数据表，所以需要先判断数据库是否有该用户信息，再进行抓取
  user = user_get.get_profile(uid)
  # 不抓取企业号
  if user.verify_type == 2:
    set_seed_other_crawled(uid)
    return
  app.send_task('tasks.user.crawl_follower_fans', args=(uid,), queue='fans_followers',
         routing_key='for_fans_followers')
@app.task(ignore_result=True)
def excute_user_task():
  seeds = get_seed_ids()
  if seeds:
    for seed in seeds:
      # 在send_task的时候指定任务队列
      app.send_task('tasks.user.crawl_person_infos', args=(seed.uid,), queue='user_crawler',
             routing_key='for_user_info')