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Tag: isinstance

What argument ‘isinstance’ takes on declaring ‘k’ object?

So I have difficulties with understanding why isinstance evaluating True in this code. I see it as int is checking against class, which makes no sense to me. Answer Looking at this article about isinstance: The isinstance() function returns True if the specified object is of the specified type, otherwise False. In m’s definition: You’re passing 1 as the value

Check if an item is an instance but not a subclass

How can you check if an object is an instance of a class but not any of its subclasses (without knowing the names of the subclasses)? So if I had the below code: what would go in the #code space that would produce the output?: Because issubclass() and isinstance() always return True. Answer The object.__class__ attribute is a reference to

Should `isinstance()` check against typing or collections.abc?

Both typing and collections.abc includes similar type such as Mapping, Sequence, etc. Based on the python documentation, it seems that collections.abc is preferred for type checking: This module provides abstract base classes that can be used to test whether a class provides a particular interface; for example, whether it is hashable or whether it is a mapping. https://docs.python.org/3/library/collections.abc.html but using

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