Python .reverse()

The .reverse() method of a Python collections.deque reverses the order of elements in the deque in-place.

Syntax

deque.reverse()

Parameters:

The .reverse() method doesn’t take any parameters.

Return value:

The deque is modified in-place.

Example

In this example, the elements of a deque are reversed in-place, changing the order of items:

from collections import deque

# Create a deque
d = deque([1, 2, 3, 4])

# Reverse the order of deque's elements
d.reverse()
print(d)

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The output of this code is:

deque([4, 3, 2, 1])

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Codebyte Example

The following example reverses the deque in-place to flip the order of words in a sentence:

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