📅 2017-Feb-27 ⬩ ✍️ Ashwin Nanjappa ⬩ 🏷️ isinstance, issubclass ⬩ 📚 Archive
Use this built-in function to find out if a given object is an instance of a certain class or any of its subclasses. You can even pass a tuple of classes to be checked for the object.
The only gotcha you will discover is this: in Python a bool object is an instance of int! Yes, not kidding!
This built-in function is similar to isinstance, but to check if a type is an instance of a class or any of its subclasses.
Again, the only gotcha is that bool type is subclass of int type.
>>> isinstance(True, int) True >>> isinstance(True, float) False >>> isinstance(3, int) True >>> isinstance([1,2,3], list) True >>> isinstance("aa", str) True >>> isinstance(u"as", unicode) True >>> issubclass(bool, int) True