How do I check if a value is an instance of a specific class in Python?
Davide S

To check if a value is an instance of a specific class in Python, you can use theisinstance() function. Theisinstance() function allows you to determine if an object belongs to a particular class or its subclasses. Here's an example of how you can perform this check:

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class MyClass:
    pass

class MySubClass(MyClass):
    pass

obj1 = MyClass()
obj2 = MySubClass()

print(isinstance(obj1, MyClass))  # Output: True
print(isinstance(obj2, MyClass))  # Output: True

In the above code, theisinstance() function is used to check ifobj1 andobj2 are instances of theMyClass class. Bothobj1 andobj2 are considered instances ofMyClass becauseMySubClass is a subclass ofMyClass. You can use theisinstance() function by providing the object and the class (or tuple of classes) to check against as arguments. It will returnTrue if the object is an instance of the specified class or any of its subclasses. Otherwise, it will returnFalse. You can also useisinstance() to check against multiple classes by providing a tuple of classes as the second argument:

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class MyClass:
    pass

class MyOtherClass:
    pass

obj = MyClass()

print(isinstance(obj, (MyClass, MyOtherClass)))  # Output: True

In the above code,isinstance() is used to check ifobj is an instance of eitherMyClass orMyOtherClass. Sinceobj is an instance ofMyClass, the check returnsTrue. Theisinstance() function is useful when you need to determine the type of an object dynamically or perform conditional checks based on the object's class. It allows you to write flexible and reusable code that can handle different object types appropriately.

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