append vs extend python

in python, when working with lists, you may come across two common methods: append() and extend(). both methods are used to add elements to a list, but they behave differently. understanding the difference between append() and extend() is crucial for efficient list manipulation. this tutorial will explain the difference between these two methods with code examples.
the append() method is used to add a single element to the end of a list.
syntax:
example:
the extend() method is used to add multiple elements (such as another list) to the end of a list.
syntax:
example:
data type: append() adds a single element, while extend() can add multiple elements from an iterable.
mutability: both methods modify the original list in place, but extend() can modify the list by adding multiple elements at once, which can be more efficient than appending elements one by one.
nested lists: when you append() a list to another list, it becomes a nested list. however, when you extend() a list with another list, the elements of the second list are added individually to the first list.
return value: both methods modify the list in place and return none. they do not create a new list.
understanding the difference between append() and extend() is essential for efficient list manipulation in python. remember, if you want to add a single element to a list, use append(), and if you want to add multiple elements from an iterable, use extend(). choose the appropriate method based on your requirements to write cleaner and more efficient code.
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