Python 列表

标签：python列表

例子

name_list = ["Jin","Tom","Cat","Jak"]

索引(从0开始)

    name_list(0)

结果：Jin

---------------

查看列表的有什么方法

dir(name_list)

append(追加)

    name_list.append("Jin")

clear(清空)

    name_list.cler()

cocount(统计)

    name_list.cocount("Jin")

extend(扩展)

     age_list = ["22","33","44","55"]

     age_list.extend(age_list)

index(查找索引，只会返回查找到第一个)

     age_list.index("jin")

insert（插入）  

     name_list.insert(2,jin)

     name_list = ["Jin","Tom","jin","Cat","Jak"]

pop(删除一个,会删除最后一个)

     name_list.pop

remove(删除指定一个)

    name_list.remove("jin")

reverse(反转)

    name_list.reverse()

sort(排序)

    name_list.sort()

-------------------------------

列表切片

>>> name_list

[‘Jin‘, ‘Tom‘, 33, 33, ‘Cat‘, ‘Jak‘, ‘jak‘, ‘12‘, ‘33‘, ‘44‘, ‘55‘, ‘66‘]

>>> name_list[0:3]  (0:3 这是索引值，切片会顾头不顾尾)

[‘Jin‘, ‘Tom‘, 33]

>>> name_list[4:]

[‘Cat‘, ‘Jak‘, ‘jak‘, ‘12‘, ‘33‘, ‘44‘, ‘55‘, ‘66‘]

>>> name_list[:-1]

[‘Jin‘, ‘Tom‘, 33, 33, ‘Cat‘, ‘Jak‘, ‘jak‘, ‘12‘, ‘33‘, ‘44‘, ‘55‘]

>>> name_list

[‘Jin‘, ‘Tom‘, 33, 33, ‘Cat‘, ‘Jak‘, ‘jak‘, ‘12‘, ‘33‘, ‘44‘, ‘55‘, ‘66‘]

>>> name_list[:-2]

[‘Jin‘, ‘Tom‘, 33, 33, ‘Cat‘, ‘Jak‘, ‘jak‘, ‘12‘, ‘33‘, ‘44‘]

>>> name_list[-3:-2]

[‘44‘]

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Python 列表

标签：python列表

原文地址：http://sublime.blog.51cto.com/8856101/1829680