Python - Print list after removing element at given index

In this article, we will explore different ways to remove an element from a list at a given index and print the updated list, offering multiple approaches for achieving this.

Using pop()

pop() method removes the element at a specified index and returns it.

li = [10, 20, 30, 40, 50]
index = 2
li.pop(index)
print(li)

[10, 20, 40, 50]

Explanation:

• pop() method removes the element at the specified index (2 in this case), which is 30, from the list li.
• After the pop(), the list li is updated to [10, 20, 40, 50], with the element at index 2 removed.

Using List Slicing

We can use list slicing to remove an element by excluding the element at the given index.

li = [10, 20, 30, 40, 50]
index = 2
li = li[:index] + li[index+1:]
print(li)

[10, 20, 40, 50]

Explanation:

• This code creates a new list by concatenating two slices of the original list l: one from the beginning up to index (excluding the element at index), and the other from index+1 to the end of the list.
• As a result, the element at index 2 (which is 30) is removed, and the updated list is [10, 20, 40, 50].

Using del Keyword

del keyword can be used to delete an element at a specific index.

li = [10, 20, 30, 40, 50]
index = 2
del li[index]
print(li)

[10, 20, 40, 50]

Explanation:

• del statement removes the element at the specified index (2 in this case), which is 30, from the list li.
• After using del, the list li is updated to [10, 20, 40, 50], with the element at index 2 removed.

Using List Comprehension

List comprehension can be used to create a new list excluding the element at the specified index.

l = [10, 20, 30, 40, 50]
index = 2
l = [l[i] for i in range(len(l)) if i != index]
print(l)

[10, 20, 40, 50]

Explanation:

• This code uses list comprehension to create a new list by iterating over the indices of the original list li and including only those elements where the index is not equal to 2.
• As a result, the element at index 2 (which is 30) is excluded, and the updated list is [10, 20, 40, 50].