首先，创建包含这些标题的字典。然后使用类似readline（[n]）的命令读取此文本文件中的每一行。如果您的字符是特殊字符，如逗号或空格。将这些值 在字典中的键，然后你可以通过python的pandas库很容易地将字典转换成csv文件来创建一个数据框。你可以阅读Pandas的文档。

import re

with open('text.txt') as f:  #replace text.txt with your text file path
  for line in f:
    result = re.search(r"^(\d+),(\d+),(\d{4}-\d{2}-\d{2})"gm, line)
    if re.search(r"(^\d+):", line) is not None:
      movie_id = re.search(r"(^\d+):", line).group(1)
    elif result:
      costomer_id = result.group(1)
      rating = result.group(2)
      date = result.group(3)

      data_list = [costomer_id, rating, date, movie_id]    #data that you want. you can store it as csv file
      # YOUR CODE

    else:
      continue