使用命名元组获取元组中具有相同名称和值的所有内容(get all with same name and value in tuple using named tuple)

使用命名元组获取元组中具有相同名称和值的所有内容(get all with same name and value in tuple using named tuple)

在python namedtuple中，如何获取具有相同名称的所有值？

例如。 ： [tup(a = 1, b=2), tup(a = 2, b=5), tup(a = 3, b=2)]

我怎样才能获得所有或所有b？

另外，是否有可能获得b == 2所有元组？

In python namedtuple, how can I get all values with the same name?

eg. : [tup(a = 1, b=2), tup(a = 2, b=5), tup(a = 3, b=2)]

How can I get all a's or all b's?

Also, is it possible to get all tuples with b == 2 ?

最满意答案

列出对胜利的理解：

all_b_values = [t.b for t in list_of_named_tuples] all_a_values = [t.a for t in list_of_named_tuples]

要么

all_b_2s = [t for t in list_of_named_tuples if t.b == 2]

关于这些列表namedtuple没有任何特定于名称的特定内容; 它们适用于具有共同属性的任何对象序列。

List comprehensions for the win:

all_b_values = [t.b for t in list_of_named_tuples] all_a_values = [t.a for t in list_of_named_tuples]

or

all_b_2s = [t for t in list_of_named_tuples if t.b == 2]

There is nothing namedtuple-specific about these list comprehensions; they work for any sequence of objects with common attributes.