Created
January 31, 2013 01:07
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How to get a dynamic object in Python. A dynamic object is just a bag of properties, some of which might happen to be functions, just like objects in javascript. Forget OOP. This is QDP - quick-n-dirty programming!
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| class Dynamic(dict): | |
| """Dynamic objects are just bags of properties, some of which may happen to be functions""" | |
| def __init__(self, **kwargs): | |
| self.__dict__ = self | |
| self.update(kwargs) | |
| def __setattr__(self, name, value): | |
| import types | |
| if isinstance(value, types.FunctionType): | |
| self[name] = types.MethodType(value, self) | |
| else: | |
| super(Dynamic, self).__setattr__(name, value) | |
| d = Dynamic(flapdoodle='thingamajig') | |
| d.whatsit = "dammit!" | |
| print d['whatsit'] | |
| # dammit! | |
| print d.whatsit | |
| # dammit! | |
| print d['flapdoodle'] | |
| # thingamajig | |
| print d.flapdoodle | |
| # thingamajig | |
| d.whatsit = 'foo' | |
| print d['whatsit'] | |
| # foo | |
| print d.whatsit | |
| # foo | |
| def spam(self, n): | |
| for i in range(n): | |
| print "The %s is in the %s!!" % (self.whatsit, self.flapdoodle,) | |
| d.spam = spam | |
| d.spam(5) | |
| # The foo is in the thingamajig!! | |
| # The foo is in the thingamajig!! | |
| # The foo is in the thingamajig!! | |
| # The foo is in the thingamajig!! | |
| # The foo is in the thingamajig!! | |
| print str(d) | |
| # {'flapdoodle': 'thingamajig', 'whatsit': 'foo', 'spam': <bound method ?.spam of {...}>} |
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