列表的使用:
list.append(value) 向列表增加元素
list.insert(index, value) 向列表指定元素插入元素
list.extend(newlist) 用新的列表扩展列表
list.remove(value) 删除列表的指定值
del list[index] 删除指定索引的值
list.pop() 删除列表最后一个值
list.reverse() 列表反转
list.sort() 列表元素按ASCII码排序
list.count(value) 统计元素的个数
list[index1:index2] 切片操作(顾头不顾尾)
>>> list = [str(a) for a in range(10)] >>> print list ['] >>> list.append(11) >>> print list [', 11] >>> list.insert(1, 20) >>> print list [', 11] >>> list.extend(['aaa', 'bbb']) >>> print list [', 11, 'aaa', 'bbb'] >>> list.remove(20) >>> list [', 11, 'aaa', 'bbb'] >>> list.pop() 'bbb' >>> list [', 11, 'aaa'] >>> list.reverse() >>> list ['] >>> list[-5:] [']
实战:打印列表中所有这个值的索引
get_all_index_for_value.py
#!/usr/bin/env python # _*_ coding:UTF-8 _*- list = [3,5,4,5,6,5,5] index = 0 for i in range(list.count(5)): new_index = list.index(5) index = index + new_index print "is Found at", index index = index + 1 list = list[new_index+1:]
结果:
liudaoqangdeAir:list liudaoqiang$ python get_all_index_for_value.py is Found at 1 is Found at 3 is Found at 5 is Found at 6
当然还可以使用list.index(value, start, end)来实现如下:
#!/usr/bin/env/python # _*_ coding:UTF-8 _*_ list = [3,5,4,5,6,5,5] index = 0 for I in range(count(5)): if pos == 0: index = list.index(5) else: index = list.index(5, index+1) print "is Found at", index
元组的使用
tuple.count() 统计元组的元素个数
tuple.index(value) 返回指定值的索引
tuple[index1:index2] 切片操作
list(tuple) 将元组转化为列表
tuple(list) 将列表转化为元组