根据python中的条件从和数组中提取子数组

Question

我想根据条件提取一些行和列（类似于子数组）

下面是一个输入和期望输出的示例

[["00:00:01","data_update","data1",10.5,"blabla"],
 ["00:00:02","proc_call","xxx","xxx","blalla"],
 ["00:00:15","data_update","data2",34.5,"blabla"],
 ["00:00:25","proc_call","xxx","xxx","blalla"]]

所需输出（用列0、2和3保持“数据更新”行）

下面是一个输入和期望输出的示例

[["00:00:01","data1",10.5],
 ["00:00:15","data2",34.5]]

在python中有没有一种简单的方法可以做到这一点

Answer 1

result = filter(lambda x: "data_update" in x, a)
result = [[item[0],item[2],item[3]] for item in result]

第一行，找出所有包含“数据更新”的行 第二行，使用所需的3列重新生成结果