learn-python/src/classes/test_instance_objects.py at master · amlen/learn-python · GitHub

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"""Class Definition Syntax.

@see: https://docs.python.org/3/tutorial/classes.html#instance-objects

"""

def test_instance_objects():

"""Instance Objects.

Now what can we do with instance objects? The only operations understood by instance objects

are attribute references. There are two kinds of valid attribute names:

- data attributes

- methods.

"""

# DATA ATTRIBUTES need not be declared; like local variables, they spring into existence when

# they are first assigned to. For example, if x is the instance of MyCounter created above,

# the following piece of code will print the value 16, without leaving a trace.

# pylint: disable=too-few-public-methods

class DummyClass:

"""Dummy class"""

pass

dummy_instance = DummyClass()

# pylint: disable=attribute-defined-outside-init

dummy_instance.temporary_attribute = 1

assert dummy_instance.temporary_attribute == 1

del dummy_instance.temporary_attribute

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