Georg Brandl <[EMAIL PROTECTED]> wrote in news:[EMAIL PROTECTED]:
> Unfortunately, a @property decorator is impossible...
>
It all depends what you want (and whether you want the implementation to be
portable to other Python implementations). Here's one possible but not
exactly portable example:
from inspect import getouterframes, currentframe
import unittest
class property(property):
@classmethod
def get(cls, f):
locals = getouterframes(currentframe())[1][0].f_locals
prop = locals.get(f.__name__, property())
return cls(f, prop.fset, prop.fdel, prop.__doc__)
@classmethod
def set(cls, f):
locals = getouterframes(currentframe())[1][0].f_locals
prop = locals.get(f.__name__, property())
return cls(prop.fget, f, prop.fdel, prop.__doc__)
@classmethod
def delete(cls, f):
locals = getouterframes(currentframe())[1][0].f_locals
prop = locals.get(f.__name__, property())
return cls(prop.fget, prop.fset, f, prop.__doc__)
class PropTests(unittest.TestCase):
def test_setgetdel(self):
class C(object):
def __init__(self, colour):
self._colour = colour
@property.set
def colour(self, value):
self._colour = value
@property.get
def colour(self):
return self._colour
@property.delete
def colour(self):
self._colour = 'none'
inst = C('red')
self.assertEquals(inst.colour, 'red')
inst.colour = 'green'
self.assertEquals(inst._colour, 'green')
del inst.colour
self.assertEquals(inst._colour, 'none')
if __name__=='__main__':
unittest.main()
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