Python:在方法中解压字典

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问题描述

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在 Python 中，我想通过向其中加载多个变量来创建一个新对象.最简单的方法是传递字典，但这使得编程非常烦人:我必须一直调用 self.params['health'] 而不是 self.health.有没有办法动态设置变量名(字段)?

In Python, I want to create a new object by loading a number of variables into it. The easiest way is to pass a dictionary, but that makes programming very annoying: instead of self.health I have to call self.params['health'] all the time. Is there any way to set variable names (fields) dynamically?

我有:

DEFAULT_PARAMS = {
    'health': 10,
    'position': []
}

def __init__(self, params = DEFAULT_PARAMS):
    self.params = params
    print self.params['health']

我想要:

DEFAULT_PARAMS = {
    'health': 10,
    'position': []
}

class Name():
    def load(self, params):
        # what goes here?

    def __init__(self, params = DEFAULT_PARAMS):
        self.load(params)
        print self.health

推荐答案

class Name(object):
    def __init__(self, *params):
        self.__dict__.update(DEFAULT_PARAMS)
        self.__dict__.update(params)

b = Name(position=[1,2])
print b.position

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