List reverse() Method in Python

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Python List reverse() Method

The reverse() method is used to reverse the order of elements in a list. It is a built-in method available for lists in Python.

Syntax of the reverse() method:

list_name.reverse()
  • list_name: This is the name of the list that you want to reverse.

The reverse() method modifies the original list in place, meaning it does not create a new list with the reversed elements. Instead, it directly changes the order of elements within the existing list.

Example:

# Create a list
my_list = [1, 2, 3, 4, 5]

# Reverse the list
my_list.reverse()

print(my_list)  # Output: [5, 4, 3, 2, 1]

As you can see, the reverse() method reversed the order of elements in the original list. The first element became the last, the second element became the second-to-last, and so on. Keep in mind that the reverse() method modifies the original list and does not create a new list with the reversed elements. If you want to preserve the original list and create a reversed copy, you can use slicing with a step of -1: 

# Create a list
my_list = [1, 2, 3, 4, 5]

# Create a reversed copy of the list using slicing
reversed_copy = my_list[::-1]

print(reversed_copy)  # Output: [5, 4, 3, 2, 1]
print(my_list)        # Output: [1, 2, 3, 4, 5] (Original list remains unchanged)

In this example, the [::-1] slicing syntax creates a new list with the elements of the original list in reverse order, while the original list remains unchanged.

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