![]() From both data types, we can access elements by index and we can iterate over them. To define a tuple, we just need to replace the brackets with parentheses () like this: numbers = (1, 2, 3). We can define a list using square brackets like this: numbers =. ![]() Let’s start by comparing the tuple ( immutable) and list ( mutable) data types. On the other hand, some of the immutable data types are int, float, decimal, bool, string, tuple, and range.Some of the mutable data types in Python are list, dictionary, set and user-defined classes.Mutable and Immutable Data Types in Python In the next section, we’ll see more information and detailed examples to understand more about the differences between the mutable and immutable objects. However, the container is still considered immutable because when we talk about the mutability of a container only the identities of the contained objects are implied. The value of an immutable container that contains a reference to a mutable object can be changed if that mutable object is changed. Some examples of containers are a tuple, list, and dictionary. Important note Some objects contain references to other objects, these objects are called containers. The mutability of an object is determined by its type. Objects whose value can change are said to be mutable objects whose value is unchangeable once they are created are called immutable. An object type is unchangeable like the identity. The type() function returns the type of an object. “does it have a length?”) that type supports. TypeĪn object’s type defines the possible values and operations (e.g. The is operator compares the identity of two objects the id() function returns an integer representing its identity. IdentityĪn object’s identity never changes once it has been created you may think of it as the object’s address in memory. Every object has an identity, a type, and a value. Introduction (Objects, Values, and Types)Īll the data in a Python code is represented by objects or by relations between objects. What are an object’s identity, type, and value.After reading this blog post you’ll know:
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