data validation when creating an object

[Rita]

I would like to do some data validation when its going to a class.

class Foo(object):
  def __init__(self):
    pass

I know its frowned upon to do work in the __init__() method and only
declarations should be there.

So, should i create a function called validateData(self) inside foo?

I would call the object like this

x=Foo()
x.validateData()

Is this the preferred way? Is there a way I can run validateData()
automatically, maybe put it in __init__? Or are there other techniques
people use for this sort of thing?


-- 
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