如何向Python嵌套列表添加值？

Question

如何为每个列表添加值？你知道吗

之前：

[['2010', '10', '24', '20', '32', '18', '5'], ['2020', '16', '22', '23', '30', '16', '9'], ['2030', '28', '19', '29', '30', '12', '13']]

结果：[list]增值“”

[['2010', '10', '24', '20', '32', '18', '5', ''], ['2020', '16', '22', '23', '30', '16', '9', ''], ['2030', '28', '19', '29', '30', '12', '13', '']]

Answer 1

用于循环

nested_list = [['2010', '10', '24', '20', '32', '18', '5'], ['2020', '16', '22', '23', '30', '16', '9'], ['2030', '28', '19', '29', '30', '12', '13']]

for a_list in nested_list:
    a_list.append('')

Answer 2

您还可以执行以下操作：

my_list = [['2010', '10', '24', '20', '32', '18', '5'], 
           ['2020', '16', '22', '23', '30', '16', '9'],
           ['2030', '28', '19', '29', '30', '12', '13']]

my_list = [inner_list + [''] for inner_list in my_list]
my_list

输出：

[['2010', '10', '24', '20', '32', '18', '5', ''],
 ['2020', '16', '22', '23', '30', '16', '9', ''],
 ['2030', '28', '19', '29', '30', '12', '13', '']]