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Python 列表list(2)——4
阅读量:595 次
发布时间:2019-03-12

本文共 807 字,大约阅读时间需要 2 分钟。

详细的列表操作应用

  • 列表遍历在Python中列表(列表)是臭名昭著的可变列表,实现了一系列精彩的功能。以下是用列表进行基本操作的一些实例:
  • bi = ['we', 'love', 'aruba', 'laL']for a in bi:    print(a)    print(a.title() + ", that was a great trick!")print(a + ", good\n")
    1. 使用 range() 函数生成序列想要轻松地生成一系列连续的数字,可以用 range() 函数。这种函数非常方便,特别是在处理循环和遍历时:
    2. for var in range(1, 5):    print(var)  # 1234
      1. 数字列表如果需要创建数字列表,可以利用 range() 函数生成相应的范围,并将结果转换为列表。以下是关于创建数字列表的具体操作示例:
      2. num = list(range(1, 5))  # [1, 2, 3, 4]num = list(range(1, 10, 2))  # 步长为2,生成1到9的偶数序列
        1. 元祖的概念元祖(Tuple)是一种不可变的列表类型,其所有属性与列表相似,但它们的元素一旦确定就无法修改:
        2. aruba = (100, 50)print(aruba[0])  # 输出100
          1. 元祖的特性
          2. 元祖无法修改尝试修改元祖元素会产生错误:
          3. aruba = (100, 50)aruba[0] = 10  # 错误,元祖不可变print(aruba[0])
            1. 遍历元祖可以使用 for循环遍历元祖元素:
            2. aruba = (100, 50)for a in aruba:    print(a)
              1. 重新定义元祖元祖可以被重新赋值,即可以更改其元素:
              2. aruba = (100, 50)aruba = (10, 500)for a in aruba:    print(a)

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