do a reverse for loop in python example - Brave Search

How to loop backwards in python? [duplicate]

stackoverflow.com › questions › 3476732 › how-to-loop-backwards-in-python

range() and xrange() take a third parameter that specifies a step. So you can do the following.

range(10, 0, -1)

Which gives

[10, 9, 8, 7, 6, 5, 4, 3, 2, 1]

But for iteration, you should really be using xrange instead. So,

xrange(10, 0, -1)

Note for Python 3 users: There are no separate range and xrange functions in Python 3, there is just range, which follows the design of Python 2's xrange.

Answer from Chinmay Kanchi on Stack Overflow

pythonmorsels.com › looping-in-reverse

Looping in reverse - Python Morsels

May 27, 2025 - To loop in the reverse direction, you can use Python's built-in reversed function: >>> colors = ["purple", "blue", "green", "pink", "red"] >>> for color in reversed(colors): ... print("I like", color) ...

geeksforgeeks.org › python › backward-iteration-in-python

Backward iteration in Python - GeeksforGeeks

July 11, 2025 - a = [1, 2, 3, 4, 5] #Loop through the List # reverse order using slicing(::-1) for item in a[::-1]: print(item) # same logic written using List comprehension # [print(item) for item in a[::-1]]

Discussions

python - Loop backwards using indices - Stack Overflow

I am trying to loop from 100 to 0. How do I do this in Python? for i in range (100,0) doesn't work. For discussion of why range works the way it does, see Why are slice and range upper-bound exclu... More on stackoverflow.com

stackoverflow.com

Reversing a range using a FOR LOOP

You should show what you've tried so far. It's easier to give productive help if we base the help on code you've written. It doesn't require a for-loop though. You can use one, but it would be far more straightforward with a while. Be careful of artificially limiting what tools you consider. More on reddit.com

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December 24, 2022

loops - Traverse a list in reverse order in Python - Stack Overflow

How do I traverse a list in reverse order in Python? So I can start from collection[len(collection)-1] and end in collection[0]. I also want to be able to access the loop index. More on stackoverflow.com

stackoverflow.com

Is there a way to reverse a for loop

The reversed() function might be what you're looking for. Return a reverse iterator. seq must be an object which has a __reversed__() method or supports the sequence protocol (the __len__() method and the __getitem__() method with integer arguments starting at 0). ie for i in reversed(range(1, 101)): print(i) output: 100 99 98 97 96 ... 5 4 3 2 1 More on reddit.com

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Python Tutorial : Reverse a String Using For Loop

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Loop Over A List In Reverse | Python Example - YouTube

February 2, 2026

02.1 Reverse looping array in python - Python List Exercises Tutorial ...

For loops in Python are easy 🔁 - YouTube

October 23, 2022

stackoverflow.com › questions › 3476732 › how-to-loop-backwards-in-python

iteration - How to loop backwards in python? - Stack Overflow

range() and xrange() take a third parameter that specifies a step. So you can do the following.

range(10, 0, -1)

Which gives

[10, 9, 8, 7, 6, 5, 4, 3, 2, 1]

But for iteration, you should really be using xrange instead. So,

xrange(10, 0, -1)

Note for Python 3 users: There are no separate range and xrange functions in Python 3, there is just range, which follows the design of Python 2's xrange.

for x in reversed(whatever):
    do_something()

This works on basically everything that has a defined order, including xrange objects and lists.

Spark By {Examples}

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Python For Loop in Backwards - Spark By {Examples}

May 31, 2024 - Following are the examples of for loop in backwards # Example 1: Get the loop iteration in Backwards # Using reversed() print("Get the loop in backwards") for i in reversed(range(1,6)): # Example 2: Get the for loop in backwards using range() ...

tutorialstonight

tutorialstonight.com › reverse-for-loop-python

Reverse for loop Python (with Examples)

Another way to create a reverse loop in Python is to use the built-in range() function with a negative step value.

tutorial.eyehunts.com › home › reverse for loop in python | example code

Reverse for loop in Python | Example code - EyeHunts

September 8, 2021 - A code demonstrates how to backward iteration is done with reversed() function on the for-loop. list1 = [1, 2, 3, 4] for i in reversed(list1): print(i) ... list1 = ['Mon', 'Tue', 'Wed', 'Thu'] for i in range(len(list1) - 1, -1, -1): print(list1[i], ...

stackoverflow.com › questions › 869885 › loop-backwards-using-indices

python - Loop backwards using indices - Stack Overflow

Try range(100,-1,-1), the 3rd argument being the increment to use (documented here).

("range" options, start, stop, step are documented here)

In my opinion, this is the most readable:

for i in reversed(range(101)):
    print(i)

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JanBask Training

janbasktraining.com › community › python-python › how-do-i-reverse-a-list-or-loop-over-it-backwards

How do I reverse a list or loop over it backwards? | JanBask Training Community

June 4, 2025 - Python offers built-in features that make this process clean and readable. ... The reversed() function returns an iterator that yields the elements of the list in reverse order. my_list = [1, 2, 3, 4, 5] for item in reversed(my_list): print(item)

codecademy.com › article › how-to-reverse-a-list-in-python

How to Reverse a List in Python | Codecademy

Learn how to reverse a list in Python using `.reverse()`, `reversed()`, slicing, the two-pointer method, loops, and recursion with examples.

reddit.com › r/learnpython › reversing a range using a for loop

r/learnpython on Reddit: Reversing a range using a FOR LOOP

December 24, 2022 -

I'm doing self-study program in Python and I'm being challenged to create a function that act exactly like the RANGE function, but it reverse the range. Let's call it reverserange().

reverserange(0,5) will return tuple (4, 3, 2, 1, 0)

I can't for the life of me figure it out. I've been trying for a couple hours. I know it requires a for loop...

Can anyone assist?

You should show what you've tried so far. It's easier to give productive help if we base the help on code you've written. It doesn't require a for-loop though. You can use one, but it would be far more straightforward with a while. Be careful of artificially limiting what tools you consider.

reverse = () for x in range(a,b): b = b-1 reverse = (x,) + reverse Here is a good way to solve this, I believe I'm also doing the same course.

medium.com › becoming-a-better-software-developer › undetstanding-python-iterators-reversed-iteration-35f1c1d16196

Undetstanding Python Iterators: Reversed Iteration | by Saleem Latif | Becoming a better Software Developer | Medium

March 8, 2023 - >>> numbers = [1, 2, 3, 4, 5] >>> for number in reversed(numbers): ... print(number, end=" ") 5 4 3 2 1 · In the above example, we are reverse iterating over a list of numbers using the reversed() function.

stackoverflow.com › questions › 529424 › traverse-a-list-in-reverse-order-in-python

loops - Traverse a list in reverse order in Python - Stack Overflow

Use the built-in reversed() function:

>>> a = ["foo", "bar", "baz"]
>>> for i in reversed(a):
...     print(i)
... 
baz
bar
foo

To also access the original index, use enumerate() on your list before passing it to reversed():

>>> for i, e in reversed(list(enumerate(a))):
...     print(i, e)
... 
2 baz
1 bar
0 foo

Since enumerate() returns a generator and generators can't be reversed, you need to convert it to a list first.

You can do:

for item in my_list[::-1]:
    print item

(Or whatever you want to do in the for loop.)

The [::-1] slice reverses the list in the for loop (but won't actually modify your list "permanently").

reddit.com › r/learnpython › is there a way to reverse a for loop

r/learnpython on Reddit: Is there a way to reverse a for loop

March 27, 2020 -

I would like my iterator to go backward, like, starting from 100 and going to one. Is there a smart way to do this instead of setting a counter into the loop and making it go down by one every time the loop restarts ?

The reversed() function might be what you're looking for. Return a reverse iterator. seq must be an object which has a __reversed__() method or supports the sequence protocol (the __len__() method and the __getitem__() method with integer arguments starting at 0). ie for i in reversed(range(1, 101)): print(i) output: 100 99 98 97 96 ... 5 4 3 2 1

range(100, 0, -1)

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How do I use reverse list in Python to loop through a list backwards? - Ask a Question - TestMu AI Community

July 2, 2025 - I want to iterate over a list in reverse order using Python. What’s the most efficient or Pythonic way to handle a python reverse list scenario, especially when looping? Are there any differences between using reversed…

stackoverflow.com › questions › 3940128 › how-do-i-reverse-a-list-or-loop-over-it-backwards

python - How do I reverse a list or loop over it backwards? - Stack Overflow

To get a new reversed list, apply the reversed function and collect the items into a list:

>>> xs = [0, 10, 20, 40]
>>> list(reversed(xs))
[40, 20, 10, 0]

To iterate backwards through a list:

>>> xs = [0, 10, 20, 40]
>>> for x in reversed(xs):
...     print(x)
40
20
10
0

>>> xs = [0, 10, 20, 40]
>>> xs[::-1]
[40, 20, 10, 0]

Extended slice syntax is explained here. See also, documentation.

coderivers.org › blog › python-reverse-loop-for

Python Reverse `for` Loop: A Comprehensive Guide - CodeRivers

January 29, 2025 - If you need to access both the element and its index during reverse iteration, using range() can be more suitable as it allows you to access the index directly. Choose the method of reverse iteration that makes your code the most readable. For simple reverse iteration over a sequence, the reversed() function is usually the best choice as it is more concise and easier to understand. If your reverse loop is part of a larger algorithm, make sure to document the purpose of the loop clearly, especially if the reverse iteration is not immediately obvious from the code. Python reverse for loops provide a powerful and flexible way to iterate over sequences in reverse order.

tutorialspoint.com › article › backward-iteration-in-python

Backward iteration in Python

4 weeks ago - Use reversed() for the most Pythonic and memory-efficient backward iteration. Use [::-1] for short, readable code when a copy is acceptable.

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How to Loop Backwards in Python? - TestMu AI Community

December 8, 2024 - How can I loop backwards from 100 to 0 in Python using a backwards range python? I tried using for i in range(100, 0), but it doesn’t work as expected. How can I fix this to achieve a backward loop?

w3schools.com › python › ref_list_reverse.asp

Python List reverse() Method

The built-in function reversed() returns a reversed iterator object. ... If you want to use W3Schools services as an educational institution, team or enterprise, send us an e-mail: sales@w3schools.com · If you want to report an error, or if you want to make a suggestion, send us an e-mail: help@w3schools.com · HTML Tutorial CSS Tutorial JavaScript Tutorial How To Tutorial SQL Tutorial Python Tutorial W3.CSS Tutorial Bootstrap Tutorial PHP Tutorial Java Tutorial C++ Tutorial jQuery Tutorial

tutorial.eyehunts.com › home › how to reverse a string in python using for loop | example code

How to reverse a string in Python using for loop | Example code

January 13, 2023 - def reverse(text): rev_text = "" for char in text: rev_text = char + rev_text return rev_text print(reverse("ABC DEF")) ... Initialized a while loop with a value of the string and In each iteration, the value of str[count – 1] concatenated ...