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- from copy import deepcopy
- class Prototype:
- def __init__(self):
- self._objs = {}
- def registerObject(self, name, obj):
- """
- register an object.
- """
- self._objs[name] = obj
- def unregisterObject(self, name):
- """unregister an object"""
- del self._objs[name]
- def clone(self, name, **attr):
- """clone a registered object and add/replace attr"""
- obj = deepcopy(self._objs[name])
- obj.__dict__.update(attr)
- return obj
- if __name__ == '__main__':
- class A:
- pass
- a = A()
- prototype = Prototype()
- prototype.registerObject("a", a)
- b = prototype.clone("a", a=1, b=2, c=3)
- print(a)
- print(b.a, b.b, b.c)
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