python - 让 namedtuple 接受 kwargs

Question

如果我有这样的类(class):

class Person(object):
    def __init__(self, name, **kwargs):
        self.name = name

p = Person(name='joe', age=25) # age is ignored

忽略额外的参数。但是如果我有一个 namedtuple，我会得到“意外的关键字参数:

from collections import namedtuple 

Person = namedtuple('Person', 'name')
p = Person(name='joe', age=25)

# Traceback (most recent call last):
#   File "python", line 1, in <module>
# TypeError: __new__() got an unexpected keyword argument 'age'

如何让 namedtuple 接受 kwargs 以便我可以安全地传递额外的参数？

Answer 1

这不是很漂亮:

p = Person(*(dict(name='joe', age=25)[k] for k in Person._fields))