Add a reverse() method of collections.deque in Python

content/python/concepts/deque/terms/reverse/reverse.md

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+---
+Title: '.reverse()'
+Description: 'Reverses the elements of a deque in-place.'
+Subjects:
+  - 'Computer Science'
+  - 'Data Science'
+Tags:
+  - 'Collections'
+  - 'Deques'
+  - 'Functions'
+  - 'Methods'
+CatalogContent:
+  - 'learn-python-3'
+  - 'paths/computer-science'
+---
+
+The **`.reverse()`** method of a Python [`collections.deque`](https://www.codecademy.com/resources/docs/python/collections-module/deque) reverses the order of elements in the `deque` in-place.
+
+## Syntax
+
+```pseudo
+deque.reverse()
+```
+
+**Parameters:**
+
+The `.reverse()` method does not take any parameters.
+
+**Return value:**
+
+`None`: The deque is modified in-place.
+
+## Example
+
+In this example, the elements of a deque are reversed in-place, changing the order of items:
+
+```py
+from collections import deque
+
+# Create a deque
+d = deque([1, 2, 3, 4])
+
+# Reverse the order of deque's elements
+d.reverse()
+print(d)
+```
+
+The output of this code is:
+
+```shell
+deque([4, 3, 2, 1])
+```
+
+## Codebyte Example
+
+The following example reverses the deque in-place to flip the order of words in a sentence:
+
+```codebyte/python
+from collections import deque
+
+words = deque(["requests", "pull", "and", "calm", "keep"])
+print("Original deque:", list(words))
+print("Original sentence:", " ".join(words))
+
+# Reverse the deque in-place to flip the sentence
+words.reverse()
+
+print("After .reverse():", list(words))
+print("Reversed sentence:", " ".join(words))
+```