This will give you a sorted version of the array.

Copysorted(timestamps, reverse=True)

If you want to sort in-place:

Copytimestamps.sort(reverse=True)

Check the docs at Sorting HOW TO

Answer from Marcelo Cantos on Stack Overflow
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Python documentation
docs.python.org › 3 › howto › sorting.html
Sorting Techniques — Python 3.14.6 documentation
Both list.sort() and sorted() accept a reverse parameter with a boolean value. This is used to flag descending sorts.
Discussions

Using sorted() to print a list in reverse alphabetical order
Can anyone help me use sorted() to print a list in reverse alphabetical order please? Here is my list: places = [‘Iceland’, ‘Japan’, ‘Manchester’, ‘Norwich’] As I understand it, the sorted() function can also accept a… More on discuss.python.org
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Show HN: CLI to order groceries via reverse-engineered REWE API (Haskell)
And then 2026 feels like the perfect time writing Haskell. The code is handwritten, but whenever I got stuck with the build system or was just not getting the types right, I could fall back to ask AI to unblock me. It was never that smooth before · Finally the best side projects are the ones ... More on news.ycombinator.com
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W3Schools
w3schools.com › python › ref_func_sorted.asp
Python sorted() Function
Python Examples Python Compiler Python Exercises Python Quiz Python Challenges Python Practice Problems Python Server Python Syllabus Python Study Plan Python Interview Q&A Python Bootcamp Python Training ... The sorted() function returns a sorted list of the specified iterable object. You can specify ascending or descending order. Strings are sorted alphabetically, and numbers are sorted numerically. Note: You cannot sort a list that contains BOTH string values AND numeric values. ... a = ("h", "b", "a", "c", "f", "d", "e", "g") x = sorted(a, reverse=True) print(x) Try it Yourself »
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Programiz
programiz.com › python-programming › methods › built-in › sorted
Python sorted()
Here, sorted(iterable, reverse = True) sorts the list in descending order. The sorted() method accepts another optional parameter- the key function. For example, ... Here, len is Python's built-in function that counts the length of an element.
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Python.org
discuss.python.org › python help
Using sorted() to print a list in reverse alphabetical order - Python Help - Discussions on Python.org
August 10, 2021 - Can anyone help me use sorted() to print a list in reverse alphabetical order please? Here is my list: places = [‘Iceland’, ‘Japan’, ‘Manchester’, ‘Norwich’] As I understand it, the sorted() function can also accept a…
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GeeksforGeeks
geeksforgeeks.org › python › python-reverse-sort-a-string
Reverse Sort a String - Python - GeeksforGeeks
July 12, 2025 - If we are working with a string that has been converted into a list, we can use sort() method to reverse sort it in place. This method is slightly faster for large strings as it avoids creating a new list.
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Programiz
programiz.com › python-programming › methods › list › sort
Python List sort()
cities = ["Tokyo", "London", "Washington D.C"] # sort in dictionary order cities.sort() print(f"Dictionary order: {cities}") # sort in reverse dictionary order cities.sort(reverse = True) print(f"Reverse dictionary order: {cities}")
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Mimo
mimo.org › glossary › python › list-sort()
Python List sort(): Master Data Sorting | Learn Now
You can sort the list in descending order by passing reverse=True as an argument: ... This method sorts the list based on the specified sorting criteria, making it one of Python's most commonly used features for data organization.
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Processing
py.processing.org › reference › sorted
sorted() \ Language (API)
Python Mode for Processing extends the Processing Development Environment with the Python programming language.
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Wikipedia
en.wikipedia.org › wiki › Reverse_Polish_notation
Reverse Polish notation - Wikipedia
2 weeks ago - During the 1970s and 1980s, Hewlett-Packard used RPN in all of their desktop and hand-held calculators, and has continued to use it in some models into the 2020s. In computer science, reverse Polish notation is used in stack-oriented programming languages such as Forth, dc, Factor, STOIC, PostScript, RPL, and Joy.
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Hacker News
news.ycombinator.com › item
Show HN: CLI to order groceries via reverse-engineered REWE API (Haskell) | Hacker News
April 4, 2026 - And then 2026 feels like the perfect time writing Haskell. The code is handwritten, but whenever I got stuck with the build system or was just not getting the types right, I could fall back to ask AI to unblock me. It was never that smooth before · Finally the best side projects are the ones ...
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AlgoMaster
algomaster.io › learn › python › sorted-reversed
sorted & reversed | Python | AlgoMaster.io
May 22, 2026 - sorted & reversed — Built-in Functions in the AlgoMaster Python Programming course.
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freeCodeCamp
freecodecamp.org › news › python-sort-lists-and-reverse-arrays
Python Sorted List – And How to Sort or Reverse an Array in Python
February 24, 2023 - You can sort a list in either ascending or descending order using the reverse parameter. ... # Creating a list of numbers nums = [3, 1, 4, 1, 5, 9, 2, 6, 5, 3, 5] # Creating a new sorted list sorted_nums = sorted(nums) print(sorted_nums) ...
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GitHub
gist.github.com › BeBxu › 409e5b595001f79672ce07c025cbc0b6
python中sorted和.sorted 、reversed和reverse的注意点
python中sorted和.sorted 、reversed和reverse的注意点 · Raw · python中sorted和.sorted 、reversed和reverse的注意点 · This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below.
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AlgoExpert
algoexpert.io › questions
AlgoExpert | Ace the Coding Interviews
The leading platform to prepare for coding interviews. Master essential algorithms and data structures, and land your dream job with AlgoExpert.
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W3Schools
w3schools.com › python › python_lists_sort.asp
Python - Sort Lists
The reverse() method reverses the current sorting order of the elements.
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Sean Prashad
seanprashad.com › leetcode-patterns
Leetcode Patterns
A curated list of LeetCode questions grouped by pattern to help you ace coding interviews.
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LabEx
labex.io › tutorials › python-how-to-reverse-sort-list-elements-425828
How to reverse sort list elements | LabEx
At LabEx, we recommend practicing these sorting techniques through interactive coding exercises to build a strong foundation in Python list manipulation. Reverse sorting allows you to arrange list elements in descending order, providing a powerful ...