如何在列表的列之间循环？

Question

我正试着循环查看列表。我想找到列表中列的最小值和最大值。在

列表如下：

['Afghanistan', 2.66171813, 7.460143566, 0.490880072, 52.33952713, 0.427010864, -0.106340349, 0.261178523]
['Albania', 4.639548302, 9.373718262, 0.637698293, 69.05165863, 0.74961102, -0.035140377, 0.457737535]
['Algeria', 5.248912334, 9.540244102, 0.806753874, 65.69918823, 0.436670482, -0.194670126, 0]
['Argentina', 6.039330006, 9.843519211, 0.906699121, 67.53870392, 0.831966162, -0.186299905, 0.305430293]
['Armenia', 4.287736416, 9.034710884, 0.697924912, 65.12568665, 0.613697052, -0.132166177, 0.246900991]
['Australia', 7.25703764, 10.71182728, 0.949957848, 72.78334045, 0.910550177, 0.301693261, 0.45340696]

我试着从li[1]到{}遍历每一列。在

我试过：

^{2}$

输出：

7.25703764
2.66171813

我得到了第一篇专栏文章，但我正在努力循环阅读下一篇专栏文章。在

Answer 1

下面的代码使用list comprehension创建一个元组列表，其中包含每个列表的最小值和最大值，您可以进一步格式化每个元组中的国家名称。在

li = [['Afghanistan', 2.66171813, 7.460143566, 0.490880072, 52.33952713, 0.427010864, -0.106340349, 0.261178523],
    ['Albania', 4.639548302, 9.373718262, 0.637698293, 69.05165863, 0.74961102, -0.035140377, 0.457737535],
    ['Algeria', 5.248912334, 9.540244102, 0.806753874, 65.69918823, 0.436670482, -0.194670126, 0],
    ['Argentina', 6.039330006, 9.843519211, 0.906699121, 67.53870392, 0.831966162, -0.186299905, 0.305430293],
    ['Armenia', 4.287736416, 9.034710884, 0.697924912, 65.12568665, 0.613697052, -0.132166177, 0.246900991],
    ['Australia', 7.25703764, 10.71182728, 0.949957848, 72.78334045, 0.910550177, 0.301693261, 0.45340696]]

li2 = [(min(y),max(y)) for y in [[x for x in l[1:]] for l in li]]
print (li2)

Answer 2

您可以使用zip。将数据集设为my_list：

my_lists = [['Afghanistan', 2.66171813, 7.460143566, 0.490880072, 52.33952713, 0.427010864, -0.106340349, 0.261178523],
['Albania', 4.639548302, 9.373718262, 0.637698293, 69.05165863, 0.74961102, -0.035140377, 0.457737535],
['Algeria', 5.248912334, 9.540244102, 0.806753874, 65.69918823, 0.436670482, -0.194670126, 0],
['Argentina', 6.039330006, 9.843519211, 0.906699121, 67.53870392, 0.831966162, -0.186299905, 0.305430293],
['Armenia', 4.287736416, 9.034710884, 0.697924912, 65.12568665, 0.613697052, -0.132166177, 0.246900991],
['Australia', 7.25703764, 10.71182728, 0.949957848, 72.78334045, 0.910550177, 0.301693261, 0.45340696]]


for t in list(zip(*my_lists))[1:]:
    print(max(t), min(t))

7.25703764 2.66171813
10.71182728 7.460143566
0.949957848 0.490880072
72.78334045 52.33952713
0.910550177 0.427010864
0.301693261 -0.194670126
0.457737535 0

Answer 3

columns=len(newlist[0])
rows=len(newlist)
for i in range(1,columns):
    for j in range(rows):
        small.append(newlist[j][i])
    print("{}. columuns min value:{} max value:{}".format(i,min(small),max(small)))