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Doc: Do not encourage using a base class name in a derived class (GH-22177)

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Andre Delfino 2020-10-21 02:25:05 -03:00 committed by GitHub
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Doc/faq/programming.rst
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@ -1517,17 +1517,17 @@ order` (MRO) with ``type(self).__mro__``, and return the next in line after
How can I organize my code to make it easier to change the base class?
----------------------------------------------------------------------
You could define an alias for the base class, assign the real base class to it
before your class definition, and use the alias throughout your class. Then all
You could assign the base class to an alias and derive from the alias. Then all
you have to change is the value assigned to the alias. Incidentally, this trick
is also handy if you want to decide dynamically (e.g. depending on availability
of resources) which base class to use. Example::
BaseAlias = <real base class>
class Base:
...
BaseAlias = Base
class Derived(BaseAlias):
def meth(self):
BaseAlias.meth(self)
...