Can I create class properties during __new__ or __init__?
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by 007brendan
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Published on 2010-03-23T01:19:59Z
Indexed on
2010/03/23
1:21 UTC
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python
I want to do something like this. The _print_attr function is designed to be called lazily, so I don't want to evaluate it in the init and set the value to attr. I would like to make attr a property that computes _print_attr only when accessed:
class Base(object):
def __init__(self):
for attr in self._edl_uniform_attrs:
setattr(self, attr, property(lambda self: self._print_attr(attr)))
def _print_attr(self, attr):
print attr
class Child(Base):
_edl_uniform_attrs = ['foo', 'bar']
me = Child()
me.foo
me.bar
#output:
#"foo"
#"bar"
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