list1=[1,2,3],list[:-1]

list1=[1,2,3],list[:-1]

23、合并>>>list = [1,"a","b","c",1,4,2,1,2,3,4] >>>list2 = ["aa","bb","cc"] >>>list.extend(list2) #用于在列表末尾一次性追加另一个序列中的多个值(用pythonlist每个元素+1,[1,2,3,4]变成[2,3,4,5] >>> a=[1,2,3,4,5,6] >>> b=list(map(lambda x:x+1,a)) >>> a [1, 2, 3, 4, 5, 6] >>> b [2, 3, 4, 5, 6, 7]

＋▽＋ >>> l1 = [1, 2, 3, 4]>>> l2 = ['a', 'b', 'c', 'd']>>> [[x, y] for i, x in enumerate(l1) for y in l2[i]][[1, 'a'], [2, 'b'], [3, 'c'], [4, 'd']]>>> 这种n=len(list) #冒泡排序#外循环每次循环就会两两比较选出最大的数放在右边，所以是实际比较的个数是n-1(比如1,2,3)三个数比较只会比较2次for x in range(0,n-1): # 内循环控制每趟

可以看一下这套教程https://xin3721/eschool/pythonxin3721/​xin3721/eschool/list2 = [1, 2, 3, 4, 5, 6, 7 ]; print "list1[0]: ", list1[0] print "list2[1:5]: ", list2[1:5] 以上实例输出结果：list1[0]: physics list2[1:5]: [2, 3,

print(string[-1],string[-3]) 输出：o h 超出字符串范围tring=’Python‘print(string[6]) 输出：报错查找某个位置的数据或元素字符串切片word = 'Python'定义列表list1 = [] # 定义空列表list1 = list() # 定义空列表list1 = [1,2,3,4,5,6,7] list2 = [3,“abc”，5,[6,7],(8,9),{“key1”：“value1”}] 读取列

functionreplacer(key,value){// key value 分别为对象的每个键值对if(typeofvalue==="string"){returnundefined;}returnvalue;}constfoodList=['苹果',1,'2',[x+y for x, y in zip(list1, list2)]