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Re: Property setter and lambda question

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  Re: Property setter and lambda question Thomas Jollans <t@jollybox.de> - 2011-07-11 19:06 +0200

#9265 — Re: Property setter and lambda question

# On 07/11/2011 06:53 PM, Anthony Kong wrote:
# But decorator! Of course! Thanks for reminding me this.
#
# In your example, where does '@not_here' come from? (Sorry, this syntax
# is new to me)

class A(object):
    def __init__(self):
        self.not_here = 1

     @property
     def not_here(self):
         return self.__not_here

     @not_here.setter
     def not_here(self, val):
         self.__not_here = val

"""
Let's translate that to non-decorator Python:
"""

class A(object):
    def __init__(self):
        self.not_here = 1

    def _(self):
        return self.__not_here
    not_here = property(_)
    del _

    def _(self, val):
        self.__not_here = val
    not_here = not_here.setter(_)
    del _


"""
@not_here.setter exists because not_here.setter exists. not_here exists
since we set it (when the getter/property was set).


Cheers
Thomas


PS: are you sure the lambda self: self.__foo() trick works, with
subclasses or otherwise? I haven't tested it, and I'm not saying it
doesn't, but I have a feeling double-underscore name mangling might be a
problem somewhere down the line?

"""

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