What is the difference between Python's list methods append and extend?
append() method adds an item to the end of the list. The item can be of any type, and you can use the method to add multiple items by separating them with a comma. For example:
fruits = ['apple', 'banana', 'mango'] fruits.append('orange') print(fruits) # Output: ['apple', 'banana', 'mango', 'orange'] fruits.append('grapes', 'strawberry') print(fruits) # Output: ['apple', 'banana', 'mango', 'orange', 'grapes', 'strawberry']
On the other hand, the
extend() method takes an iterable (such as a list) and adds each element of the iterable to the list one by one. For example:
fruits = ['apple', 'banana', 'mango'] new_fruits = ['orange', 'grapes', 'strawberry'] fruits.extend(new_fruits) print(fruits) # Output: ['apple', 'banana', 'mango', 'orange', 'grapes', 'strawberry']
In summary, the main difference between
extend() is that
append() adds a single item to the list, while
extend() adds multiple items to the list.
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