Setting a function equal to a boolean in python

Question

I'm writing a driver in Python 2.6 and I need it to be reverse compatible with a previous implementation (I don't have access to the source code).

class new_driver ():

     def output(self, state):

          if state == True:
              self.set_ouput_on()
          else:
              self.set_output_off()

              ...

The odd thing is that to keep compatibility I have to pass this output using the format

nd = new_driver()
nd.output = True

How do I pass a value in this way?

Edit: To clarify: my "output" function has to receive the value True in this way in order to execute the function self.set_output_on()

So, your recipient expects nd.output to be boolean or what? — bereal
– bereal, Commented May 28, 2014 at 18:59

bedwyr · Accepted Answer · 2014-05-28 19:01:50Z

4

Try using the @property decorator:

@property
def output(self):
    return self... #not sure how you are tracking output on/off

@output.setter
def output(self, state):
    if state:
        self.set_output_on()
    else:
        self.set_output_off()

answered May 28, 2014 at 19:01

bedwyr

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1 Comment

user3684969 Over a year ago

I did a fair bit of research on decorators (I'm a python noob) but I don't really understand what the build in property function is/does. Also I understand the possible use of @output but am confused about what .setter is/does.

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