Oct 31, 2008 · .append() adds its argument as a single element to the end of a list. The length of the list itself will increase by one. .extend() iterates over its argument adding each element to the list, extending the list. The length of the list will increase by however many elements were in the iterable argument.

Dec 13, 2024 · append () method is used to add a single element to the end of a list. This element can be any data type, a number, a string, another list, or even an object. extend () method is used to add all elements from an iterable (e.g., a list, tuple, or set) to the end of the current list.

The extend() function takes any iterable data type (e.g. list, tuple, string, dictionary) as an argument and adds all the elements of the list passed as an argument to the end of the given list. This function can be used to add more than one element in the list in a single statement.

We discussed in detail the differences between the append and extend methods. We said the .append() adds a single item to the end of a list while the .extend() gives us the flexibility to join two lists together.

Apr 8, 2015 · Extend the list by appending all the items in the given list; equivalent to a [len (a):] = L. You need to use: That way an iterable with a single item (vec1[i] + vec2[i]) is passed. But list.append is more suitable when you're always adding a single item.

Mar 22, 2020 · Effect: .append() adds a single element to the end of the list while .extend() can add multiple individual elements to the end of the list. Argument : .append() takes a single element as argument while .extend() takes an iterable as argument (list, tuple, dictionaries, sets, strings).

Apr 4, 2024 · The append () method in the Python programming language adds an item to a list that already exists whereas the extend () method adds each of the iterable elements which is supplied as a parameter to the end of the original list. Let's know more about the two functions in …

Jul 31, 2023 · Understand the key differences between the append() and extend() methods in Python. Learn their syntax, functionality, and see examples of their usage.

Feb 13, 2025 · Extend adds multiple items from an iterable to the end of a list. Each item becomes a separate element in the list. The main difference lies in how they handle arguments. append treats the argument as one entity. extend iterates through it, adding each item individually. Use append for single items. Use extend for multiple items.

Feb 10, 2025 · Python list supports two similar functions, namely . append() and . extend() that you can use to insert new data values in an existing list. Although both the methods allow us to add new elements to a list, the working and usage of each method are different from the other.