Python – Change List Item

List in Python is considered as the mutable type which means that it will be changed after providing some value. The list will work similarly to the arrays in several other programming languages. This article has listed the Python – Change List Item.

What is a Change List Item in Python?

The list is the mutable data types in Python. So, it means that the contents of the list will be altered in the place and then, the object will be stored in the memory. You can provide the new value at the given index position in the list.

Syntax of the Change List Item

list1[i] = newvalue

What are the examples of Change list Items?

Example 1: Creating a Sample List

# Creating a sample list
my_list = [10, 20, 30, 40, 50]

# Printing the original list
print("Original list:", my_list)

# Changing list items
my_list[1] = 25
my_list[3] = 45

# Printing the modified list
print("Modified list:", my_list)

Output

Original list: [10, 20, 30, 40, 50]
Modified list: [10, 25, 30, 45, 50]

Example 2: Changing all values using Loops

# Creating a sample list
my_list = [10, 20, 30, 40, 50]

# Printing the original list
print("Original list:", my_list)

# Changing all values using a loop
for i in range(len(my_list)):
    my_list[i] *= 2  # Multiplying each element by 2

# Printing the modified list
print("Modified list:", my_list)

Output

Original list: [10, 20, 30, 40, 50]
Modified list: [20, 40, 60, 80, 100]

Example 3: Change all values of a List using the List Comprehension

# Creating a sample list
my_list = [10, 20, 30, 40, 50]

# Printing the original list
print("Original list:", my_list)

# Changing all values using list comprehension
my_list = [x * 2 for x in my_list]

# Printing the modified list
print("Modified list:", my_list)

Output

Original list: [10, 20, 30, 40, 50]
Modified list: [20, 40, 60, 80, 100]

Conclusion

In conclusion, changing list items in Python is a fundamental and versatile operation that allows for dynamic manipulation of data. Whether using straightforward index assignments, employing loops for more complex transformations, or leveraging the concise power of list comprehensions, Python provides various approaches to modify the contents of a list.

This flexibility enables programmers to adapt and update lists efficiently, making Python an accessible language for tasks ranging from simple adjustments to more intricate data manipulations.

Python – Change List Items-FAQs