new_contents: #!/usr/local/bin/python
  # -*- coding:utf-8 -*-
  
  # List
  Weekday = ['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday']
  print(Weekday[0])
  
  ## List正负索引的使用
  periodic_table = ['H','He','Li','Be','B','C','N','O','F','Ne']
  print(periodic_table[0])
  print(periodic_table[-2])
  print(periodic_table[0:3])
  print(periodic_table[-10:-7])
  print(periodic_table[-10:])
  print(periodic_table[:9])
  
  # 字典Dictonary
  
  ## 字典的特征
  
  NASDAQ_CODE = {
      'BIDU': 'Baidu',
      'SINA':'Sina',
      'YOKU': 'Youku'
  }
subject: Add the DataStructure.py