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pythonでメタプログラミング
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| # https://docs.python.org/3.5/library/types.html | |
| from types import MethodType | |
| class Base(object): | |
| def __init__(self, **kwargs): | |
| self.__dict__.update(kwargs) | |
| def add_instance_method(self, method): | |
| setattr(self, method.__name__, MethodType(method, self)) | |
| p0 = Base(name="zero") | |
| p0.say() # --> AttributeError: 'Base' object has no attribute 'say' | |
| def say(self): | |
| return "%s: hi." % self.name | |
| p1 = Base(name="taro") | |
| p1.add_instance_method(say) | |
| p1.say() # --> 'taro: hi.' | |
| def say(self): | |
| return "%s: hello" % self.name | |
| p2 = Base(name="jiro") | |
| p2.add_instance_method(say) | |
| (p1.say(), p2.say()) # --> ('taro: hi.', 'jiro: hello') |
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https://docs.python.org/3.5/library/types.html