how to import variable from a different file class function

Question

  self.assertFalse(b.__is_manual) AttributeError: 'BaseResource' object has no attribute '_Resources__is_manual'

My test_resources.py is

class Resources(TestCase):
    def test_disable_manual_mode(self):
        self.assertFalse(b.__is_manual)
if __name__=='__main__':
    b = base.BaseResource()
    unittest.main()

And My base.py is

class BaseResource(object):
    def __init__(self, index=0, parent=None, **kwargs):
        self.__is_manual = False
    def disable_manual_mode(self):
        self.__is_manual = False

Both are in same directory I want to import __is_manual in test_resouces.py

How do i do it.

I have tried b.__is_manual but it is giving error(mentioned above)

Mauro Baraldi · Accepted Answer · 2019-05-15 05:12:16Z

1

According to Python docs

“Private” instance variables that cannot be accessed except from inside an object don’t exist in Python. However, there is a convention that is followed by most Python code: a name prefixed with an underscore (e.g. _spam) should be treated as a non-public part of the API (whether it is a function, a method or a data member). It should be considered an implementation detail and subject to change without notice. The instantiation of object must be inside the test class.

When naming the attribute to __is_manual, you are defining it as a "protected" attribute, and you can not access it. Simplify your code.

class BaseResource(object):
    def __init__(self, index=0, parent=None, **kwargs):
        self.is_manual = False

    def disable_manual_mode(self):
        self.is_manual = False

Also, the instantiation of object must be inside the test class.

class Resources(TestCase):
    def test_disable_manual_mode(self):
        b = base.BaseResource()
        self.assertFalse(b.is_manual)

if __name__=='__main__':
    unittest.main()

edited May 15, 2019 at 5:12

answered May 15, 2019 at 4:52

Mauro Baraldi

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2 Comments

Mauro Baraldi Over a year ago

@AbhishekYadav I have improved the answer.

Abhi Over a year ago

But if i have multiple methods then i need to do instantiation of object multiple times

Abhi · Accepted Answer · 2019-05-15 05:22:30Z

0

We can't access __is_manual. Because we can't access a variable starting with __ (double underscore).

answered May 15, 2019 at 5:22

Abhi

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