The isinstance
function in Python is a built-in function used to check if an object is an instance of a specified class or a tuple of classes. This function is particularly useful for type checking and validating object types, helping ensure that operations are performed on the correct types of objects.
isinstance
Function WorksThe isinstance
function determines whether an object is an instance of a specified class or a subclass of that class. It can also handle multiple class types provided in a tuple.
**object**
: The object whose type you want to check.**classinfo**
: A class, type, or a tuple of classes and types to check against.In this example, isinstance
confirms that obj
is an instance of MyClass
and also of the base object
class. It is not an instance of int
.
isinstance
Functionisinstance
to ensure that an object is of a specific type before performing operations on it. This helps prevent runtime errors and improves code robustness.Output:
In this example, isinstance
checks if data
is an instance of either str
or list
, allowing the function to handle these types accordingly.
The isinstance
function in Python is a valuable tool for type checking and validation. By using isinstance
, you can ensure that your code operates on the correct types of objects, enabling safer and more maintainable code. This function is essential for managing type constraints and enhancing the flexibility of your Python applications.