Python list methods are built-in functions that allow us to perform various operations on lists, such as adding, removing, or modifying elements. In this article, we’ll explore all Python list methods with a simple example.
List Methods
Let's look at different list methods in Python:
- append(): Adds an element to the end of the list.
- copy(): Returns a shallow copy of the list.
- clear(): Removes all elements from the list.
- count(): Returns the number of times a specified element appears in the list.
- extend(): Adds elements from another list to the end of the current list.
- index(): Returns the index of the first occurrence of a specified element.
- insert(): Inserts an element at a specified position.
- pop(): Removes and returns the element at the specified position (or the last element if no index is specified).
- remove(): Removes the first occurrence of a specified element.
- reverse(): Reverses the order of the elements in the list.
- sort(): Sorts the list in ascending order (by default).
Examples of List Methods
append():
Syntax: list_name.append(element)
In the code below, we will add an element to the list.
Python
a = [1, 2, 3]
# Add 4 to the end of the list
a.append(4)
print(a)
copy():
Syntax: list_name.copy()
In the code below, we will create a copy of a list.
Python
a = [1, 2, 3]
# Create a copy of the list
b = a.copy()
print(b)
clear():
Syntax: list_name.clear()
In the code below, we will clear all elements from the list.
Python
a = [1, 2, 3]
# Remove all elements from the list
a.clear()
print(a)
count():
Syntax: list_name.count(element)
In the code below, we will count the occurrences of a specific element in the list.
Python
a = [1, 2, 3, 2]
# Count occurrences of 2 in the list
print(a.count(2))
extend():
Syntax: list_name.extend(iterable)
In the code below, we will extend the list by adding elements from another list.
Python
a = [1, 2]
# Extend list a by adding elements from list [3, 4]
a.extend([3, 4])
print(a)
index():
Syntax: list_name.index(element)
In the code below, we will find the index of a specific element in the list.
Python
a = [1, 2, 3]
# Find the index of 2 in the list
print(a.index(2))
insert():
Syntax: list_name.insert(index, element)
In the code below, we will insert an element at a specific position in the list.
Python
a = [1, 3]
# Insert 2 at index 1
a.insert(1, 2)
print(a)
pop():
Syntax: list_name.pop(index)
In the code below, we will remove the last element from the list.
Python
a = [1, 2, 3]
# Remove and return the last element in the list
a.pop()
print(a)
remove():
Syntax: list_name.remove(element)
In the code below, we will remove the first occurrence of a specified element from the list.
Python
a = [1, 2, 3]
# Remove the first occurrence of 2
a.remove(2)
print(a)
reverse():
Syntax: list_name.reverse()
In the code below, we will reverse the order of the elements in the list.
Python
a = [1, 2, 3]
# Reverse the list order
a.reverse()
print(a)
sort():
Syntax: list_name.sort(key=None, reverse=False)
In the code below, we will sort the elements of the list in ascending order
Python
a = [3, 1, 2]
# Sort the list in ascending order
a.sort()
print(a)
List (Dynamic Sized Array) Introduction
Working of List in Python
Similar Reads
Python List methods Python list methods are built-in functions that allow us to perform various operations on lists, such as adding, removing, or modifying elements. In this article, we’ll explore all Python list methods with a simple example.List MethodsLet's look at different list methods in Python:append(): Adds an
3 min read
Python List append() Method append() method in Python is used to add a single item to the end of list. This method modifies the original list and does not return a new list. Let's look at an example to better understand this.Pythona = [2, 5, 6, 7] # Use append() to add the element 8 to the end of the list a.append(8) print(a)O
3 min read
Python List extend() Method In Python, extend() method is used to add items from one list to the end of another list. This method modifies the original list by appending all items from the given iterable. Using extend() method is easy and efficient way to merge two lists or add multiple elements at once.Let’s look at a simple
2 min read
Python List index() - Find Index of Item index() method in Python is a helpful tool when you want to find the position of a specific item in a list. It works by searching through the list from the beginning and returning the index (position) of the first occurrence of the element you're looking for. Example:Pythona = ["cat", "dog", "tiger"
3 min read
Python List max() Method max() function in Python is a built-in function that finds and returns the largest element from the list. Let's understand it better with an example:Pythona = [2,3,6,1,8,4,9,0] print(max(a))Output9 Syntaxmax(listname)Parameter:listname : Name of list in which we have to find the maximum value.Return
4 min read
Python min() Function Python min() function returns the smallest value from a set of values or the smallest item in an iterable passed as its parameter. It's useful when you need to quickly determine the minimum value from a group of numbers or objects. For example:Pythona = [23,25,65,21,98] print(min(a)) b = ["banana",
4 min read
How To Find the Length of a List in Python The length of a list refers to the number of elements in the list. There are several methods to determine the length of a list in Python. For example, consider a list l = [1, 2, 3, 4, 5], length of this list is 5 as it contains 5 elements in it. Let's explore different methods to find the length of
2 min read
Python List pop() Method The pop() method is used to remove an element from a list at a specified index and return that element. If no index is provided, it will remove and return the last element by default. This method is particularly useful when we need to manipulate a list dynamically, as it directly modifies the origin
2 min read
Python List remove() Method Python list remove() function removes the first occurrence of a given item from list. It make changes to the current list. It only takes one argument, element we want to remove and if that element is not present in the list, it gives ValueError.Example:Pythona = ['a', 'b', 'c'] a.remove("b") print(a
3 min read
Python List Reverse() The reverse() method is an inbuilt method in Python that reverses the order of elements in a list. This method modifies the original list and does not return a new list, which makes it an efficient way to perform the reversal without unnecessary memory uses.Let's see an example to reverse a list usi
2 min read