CODEWITHSUNDEEP
pythonpython-2.7properties
SangminKim
SangminKim

Reputation: 9146

Create python property function dynamically

I want to create property method dynamically.

It means, for example, i want first class A to be equivalent with second one.

Is there any way?

class A(object):
  def __init__(self):
    self._a = 10
    self.createPropertyMethod(a, self._a, getFunc, setFunc, delFunc)

  def createPropertyMethod(self, name, value, getFunc, setFunc, delFunc)
     #TODO

.

class A(object):
  def __init__(self):
    self._a = 10

  @property
  def a(self):
    return getFunc(self._a)
  @a.setter
  def a(self, value):
    setFunc(self._a, value)
  @a.deleter
  def a(self):
    delFunc(self._a)

Upvotes: 1

Views: 91

Answers (1)

Martijn Pieters
Martijn Pieters

Reputation: 1123560

You can't, not on instances. The property object needs to be part of the class for the descriptor protocol on which it relies to work.

You can use the __getattr__, __setattr__ and __delattr__ hooks instead to proxy attribute access dynamically.

Upvotes: 3

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