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  ages = [2, 3, 4, 5] ages.append(6) print(ages)  # [2, 3, 4, 5, 6]
  ages = [2, 3, 4, 5] ages.extend([6, 7, 8])
  print(ages)  # [2, 3, 4, 5, 6, 7, 8]
  ages = [2, 3, 4, 5] ages.insert(2, 100) print(ages)  # [2, 3, 100, 4, 5]
 
 
 
 
 
 
 
  names = ['美国队长', '钢铁侠', '黑豹', '蜘蛛侠', '惊奇队长', '雷神', '灭霸', '绯红女巫']
  res = names.pop(0)  # 弹出指定下标位置的元素 print(res, names)
  ceos = ['马化腾', '马云', '马明哲', '马化腾', '马斯克', '马化腾']
 
 
 
  print(ceos.count('马化腾'))
 
  for _ in range(ceos.count('马化腾')):     ceos.remove('马化腾')
  print(ceos)  # ['马云', '马明哲', '马斯克']
  ceos.clear() print(ceos)  # []
  ages = [1,2,3,4,5,6] del ages[:3] print(ages)
 
 
  ages[0] = 100
 
  print(ages[0])
 
 
 
 
 
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