text: """
  What's this:
      | this is an Example of zhihu-py3 to analyze is user bought some fans.
  
  Usage:
      | 1. copy your cookies file to the dir where me located
      | 2. change USER_URL at line 12 to the user's home page url.
      | 3. var FOLLOWER_CHECK_MAX_NUM defined how many newest follower will be checked.
      | 4. var ANSWER_CHECK_MAX_NUM defined how many newest answer of user will be checked.
      | 5. just run me.
  
  Info:
      | if FOLLOWER_CHECK_MAX_NUM big than user's follower amount, it  will be auto set to user's follower amount.
  
  Author:
      | 7sDream @ 2015.12.19.
  """
  
  from zhihu import ZhihuClient
  import datetime
  
  # ==============================
  
  USER_URL = "https://www.zhihu.com/people/7sdream"
  
  FOLLOWER_CHECK_MAX_NUM = 2000
  ANSWER_CHECK_MAX_NUM = 20
  
  # ==============================
  
  
  def is_zero_user(author):
      return (author.upvote_num + author.question_num + author.answer_num) <= 3
  
  
  client = ZhihuClient('test.json')
  
  user = client.author(USER_URL)
  
  print("检查用户{user.name} at {time}".format(user=user, time=datetime.datetime.now()))
  
  if user.follower_num < FOLLOWER_CHECK_MAX_NUM:
      FOLLOWER_CHECK_MAX_NUM = user.follower_num
  
  print("正在检查前{FOLLOWER_CHECK_MAX_NUM}个关注者....".format(**locals()))
  
  zeros = 0
  for _, follower in zip(range(FOLLOWER_CHECK_MAX_NUM), user.followers):
      if is_zero_user(follower):
          zeros += 1
  
  rate = zeros / FOLLOWER_CHECK_MAX_NUM
  print("{user.name}最近{FOLLOWER_CHECK_MAX_NUM}个关注者中，三无用户{zeros}个，占比{rate:.2%}".format(**locals()))
  
  print("正在检查用户答案点赞者...")
  
  for _, ans in zip(range(ANSWER_CHECK_MAX_NUM), user.answers):
      zeros = 0
      for upvoter in ans.upvoters:
          if is_zero_user(upvoter):
              zeros += 1
      rate = zeros / ans.upvote_num if ans.upvote_num != 0 else 0
      print("在问题「{ans.question.title}」{user.name}的答案中，共有{ans.upvote_num}个点赞用户，其中三无用户{zeros}个，三无用户比率{rate:.2%}。".format(**locals()))
  