This is a very common concern, and understanding the difference really helps write better Python code. I found a great resource on how to check type of variable in Python that clarified this well. The type() function simply compares the exact type of a variable, so it doesn’t recognize subclass instances as related to their parent classes. This limitation can cause unexpected bugs when checking objects that inherit from other classes. On the other hand, isinstance() checks if an object is an instance of a specified class or any subclass, making it perfect for object-oriented programming where inheritance is common. For simple checks where you want the exact type, type() is fine, but for more complex and flexible type validation, isinstance() is safer and preferred. The difference is critical when handling polymorphic behavior or when you want your code to work with a hierarchy of classes. So, knowing when to use each makes your programs more robust and easier to maintain.