How do I use isinstance in Python?

How do I use isinstance in Python?

The isinstance() function checks if an object is an instance of a specified class or a tuple of classes. You can use it like this: isinstance(obj, classinfo).

Can you give me an example of using isinstance?

Sure! Here's an example:

x = 5
if isinstance(x, int):
    print('x is an integer')

This will print 'x is an integer' because x is indeed an integer.

What happens if I check against multiple types?

If you check against multiple types, isinstance will return True if the object is an instance of any of the specified types. For example:

x = 5
if isinstance(x, (int, float)):
    print('x is either an integer or a float')

Is isinstance the same as type()? How are they different?

Good question! isinstance() checks for inheritance, meaning it will return True for subclasses as well. type() checks for the exact type only. For example, if you have a subclass of int, isinstance will return True for that subclass, but type will not.