List is one of the fundamental data structures in Python, It provides a flexible way to store and manage a collection of items. It has several built-in methods that allow you to add, update, and delete items efficiently.
Lists in Python can contain items of different data types, including other lists, making them highly flexible to different scenarios. The list object includes several built-in methods that allow you to add, update, and delete items efficiently, as well as to perform various operations on the list’s elements.
The list methods enable you to manipulate lists easily and effectively, whether you are appending new items, removing existing ones, or even sorting and reversing the list. By using these built-in methods, you can work with lists in Python more effectively, allowing you to write more efficient and readable code.
To view all the available methods for lists, you can use the Python dir() function, which returns all the properties and functions related to an object. Additionally, you can use the Python help() function to get more detailed information about each method. For example:
print(dir([]))
print(help([].append))The following are the methods specifically designed for adding new item/items into a list:
list.append(obj) – Appends object obj to list.list.extend(seq) – Appends the contents of seq to list.list.insert(index, obj) – Inserts object obj into list at offset index.The following are the methods specifically designed for removing items from a list:
list.clear() – Clears all the contents of the list.list.pop(obj=list[-1]) – Removes and returns the last object or the object at the specified index from the list.list.remove(obj) – Removes the first occurrence of object obj from the list.These are the methods used for finding or counting items in a list:
list.index(obj) – Returns the lowest index in list that obj appears.list.count(obj) – Returns count of how many times obj occurs in the list.These are the methods used for creating copies and arranging items in a list:
list.copy() – Returns a copy of the list object.list.sort([func]) – Sorts the objects in the list in place, using a comparison function if provided.list.reverse() – Reverses the order of objects in the list in place.