Python string is not mutable, so you can not use the del statement to remove characters in place. However you can build up a new string while looping through the original one:
def reverse(text):
rev_text = ""
for char in text:
rev_text = char + rev_text
return rev_text
reverse("hello")
# 'olleh'
Top answer 1 of 4
7
Python string is not mutable, so you can not use the del statement to remove characters in place. However you can build up a new string while looping through the original one:
def reverse(text):
rev_text = ""
for char in text:
rev_text = char + rev_text
return rev_text
reverse("hello")
# 'olleh'
2 of 4
6
The problem is that you can't use del on a string in python.
However this code works without del and will hopefully do the trick:
def reverse(text):
a = ""
for i in range(1, len(text) + 1):
a += text[len(text) - i]
return a
print(reverse("Hello World!")) # prints: !dlroW olleH
YouTube
youtube.com › watch
Python Tutorial : Reverse a String Using For Loop - YouTube
Learn how to reverse a string in Python using a for loop. This tutorial explains the step-by-step logic, including taking input, iterating through each chara...
Published January 23, 2026
iterate over a string in reverse
https://docs.python.org/3/library/functions.html#reversed More on reddit.com
7
1
February 7, 20237 proven methods to reverse the python string in 2021
"".join(sorted(a, reverse=True)) will not reverse a string. >>> a = "hello world" >>> "".join(sorted(a, reverse=True)) 'wroolllhed ' There's a deeper problem with articles like this, though. Reversing a string is a trivial task (i.e., it's something for a beginner to learn). Giving seven different methods with no explanation on if one is better than another is not good teaching, especially when some don't even work and others are pointlessly verbose. More on reddit.com
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0
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Quora
programmerprogramming.quora.com › How-to-Reverse-string-in-python-using-for-loop-See-2-different-methods-to-reverse-string-using-for-loop-python-pyt
How to Reverse string in python using for loop? See 2 different methods to reverse string using for loop. #python #pythontutorial #prog...
How to Reverse string in python using for loop? See 2 different methods to reverse string using for loop. #python #pythontutorial #programming #coding https://codingforbeginnersbinaryburst.quora.com/How-to-reverse-a-string-in-python-using-for-loop-1
Reddit
reddit.com › r/learnpython › iterate over a string in reverse
r/learnpython on Reddit: iterate over a string in reverse
February 7, 2023 -
I want to iterate over a string in reverse. I googled it and found this way
for i in range(len(k)-1, 0-1, -1):
but to be honest I don't understand it. can you please explain it to me?
also, I would love it if you guys can suggest other methods
Top answer 1 of 3
6
https://docs.python.org/3/library/functions.html#reversed
2 of 3
2
This is not the approach you should take. reversed linked to by u/PaulRudin is a better tool here. But to explain the code; range takes up to 3 arguments. The first is the starting point. The second is the end point (this value will terminate the iteration and not be yielded back. The third is the step size. This is the amount by which the initial value will be modified by, until it reaches the end value. So if I pass in range(1, 5, 1) I will get back the values: 1, 2, 3, 4 If I was use to range(0, 10, 2) I get: 0, 2, 4, 6, 8 However, using range(10, 0, -2) gives 10, 8, 6, 4, 2 In this code you are starting from the end of some string (the length less one to get the last index) and taking steps backwards by 1 each iteration. The end point is -1 to include the 0 index (written strangely here, but this is a slightly strange construct anyway).
YouTube
youtube.com › watch
Three Ways to Reverse a String in Python TUTORIAL (using For Loops, reversed(), and Slice Notation) - YouTube
Python tutorial on 3 ways to reverse a string.This is a common python interview question. 📖 You can check out the Udemy course (Python Built-in Functions) h...
Published August 5, 2019
Top answer 1 of 4
1
Your function will not work since it's not returning the list.
Here is one way to solve this problem - using the for-loop:
def reverse_list(arr):
result = []
for i, _ in enumerate(arr): # try to use enumerate - it's better in most cases
result.append(arr[~i]) # use the backward indexing here
return result
2 of 4
1
With a list comprehension together with the reversed build-in function (it returns a generator):
def reverse_list(lst):
return [v for v in reversed(lst)]
# or return list(reversed(lst))
Another version but without for-loop to highlight the underlying processes:
Using build-in function slice to select a range of items in a sequence object
and select an element from the container with __getitem__ subscription.
def reverse_list(lst):
# slice object
s = slice(None, None, -1)
# selection
return lst.__getitem__(s) # <--> lst[s]
Sabe
sabe.io › blog › python-loop-string-reverse
How to Loop over a String in Reverse in Python - Sabe.io
November 10, 2022 - Define the string you want to use, then, we can loop through the reversed string via the iterator: PYTHONstring = "python" for char in reversed(string): print(char)
Tutorialspoint
tutorialspoint.com › python › python_reverse_arrays.htm
Python - Reverse Arrays
To reverse an array using a for loop, we first traverse the elements of the original array in reverse order and then append each element to a new array. The following example shows how to reverse an array in Python using for loop.
DigitalOcean
digitalocean.com › community › tutorials › python-reverse-string
Python Reverse String - 5 Ways and the Best One | DigitalOcean
August 3, 2022 - Python String doesn’t have a built-in reverse() function. However, there are various ways to reverse a string in Python. ... Using Slicing to create a reverse copy of the string. Using for loop and appending characters in reverse order
Tutorial Gateway
tutorialgateway.org › python-program-to-reverse-string
Python Program to Reverse a String
January 4, 2026 - Within the loop, we add each character to the starting position and push the existing one to the next position. For example, st1 = Hello. In the first iteration, st2 is H. In the second iteration, e is placed in the first position, and H pushes ...
Sololearn
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How to reverse a string in Python using for loop??
September 30, 2018 - Sololearn is the world's largest community of people learning to code. With over 25 programming courses, choose from thousands of topics to learn how to code, brush up your programming knowledge, upskill your technical ability, or stay informed about the latest trends.
ReqBin
reqbin.com › code › python › hcwbjlmi › python-reverse-string-example
How do I reverse a string in Python?
While Python doesn't have a built-in method to reverse the string, there are several ways to do it with just a few lines of code. You can use the slicing operator, the reversed() and string.join() methods, reverse the string using a for loop or recursion.
PREP INSTA
prepinsta.com › home › python program › python code for reverse an array
Reverse the array using python | PrepInsta
October 7, 2022 - #reversing the array def rev(arr): for i in range(len(arr)//2): arr[i],arr[-i-1]=arr[-i-1],arr[i] return arr print(rev([2,3,4,5,5,6,0])) ... n = int(int(input())) arr = [] sum = 0 for i in range(n): ele = int(input()) arr.append(ele) print(arr) ...
Python Examples
pythonexamples.org › python-reverse-string
Python - Reverse String
# Given string x = "Hello World" # Reverse string using For loop x_reversed = '' for c in x: x_reversed = c + x_reversed # Print reversed string print(x_reversed) ... In this example, we use a Python While Loop statement, and during each iteration, we decrement the length.
Unstop
unstop.com › home › blog › how to reverse a string in python in 10 ways! (code)
How To Reverse A String In Python In 10 Ways! (Code)
December 21, 2023 - One of the simplest methods to reverse a string in Python is by using a simple for loop. The for loop is a control flow statement that allows us to iterate over a sequence of elements such as lists, strings, or other iterable objects.
GeeksforGeeks
geeksforgeeks.org › python › python-reverse-all-strings-in-string-list
Reverse All Strings in String List in Python - GeeksforGeeks
July 12, 2025 - List comprehension is a concise and efficient way to reverse all strings in a list. It allows us to iterate over the list and apply a transformation to each element. ... Explanation: list comprehension iterates over each string in a and for ...
Medium
medium.com › @khasnobis.sanjit890 › python-reverse-string-74cc521cf8ca
Python Reverse String. Today we are going to write some code… | by Sanjit Khasnobis | Medium
September 10, 2023 - def reverseStr_slicemethod(inputStr): outputStr = inputStr[::-1] return outputStr def reverseStr_loopinglist_appendmethod(inputStr): outputStrlist = [] inputStrlist = list(inputStr) len_of_list = len(inputStrlist) for i in range(len_of_list): outputStrlist.append(inputStrlist[(len_of_list-i)-1]) outputStr = "".join(outputStrlist) return outputStr def reverseStr_reversed_method(inputStr): inputStrlist = list(inputStr) outputStrlist = reversed(inputStrlist) outputStr = "".join(outputStrlist) return outputStr def reverseStr_strconcat_method(inputStr): outputStr = '' for i in inputStr: outputStr =
Flexiple
flexiple.com › python › python-reverse-string
Reverse String In Python - Flexiple
March 18, 2024 - To reverse a string in Python using a loop, follow these steps. First, initialize an empty string that will hold the reversed string. Then, use a loop to iterate over the original string, adding each character to the beginning of the new string.
GeeksforGeeks
geeksforgeeks.org › python › reverse-string-python-5-different-ways
How to reverse a String in Python - GeeksforGeeks
Python provides a built-in function called reversed() which can be used to reverse the characters in a string. ... If we need more control over the reversal process then we can use a for loop to reverse the string.
Published March 3, 2026
Educative
educative.io › answers › how-do-you-reverse-a-string-in-python
How do you reverse a string in Python?
s="Python" # initial string · ... (slicedString) # print the reversed string · Run · To start, let’s create a new array called reversedString[]. We can then loop over the list with iterating variable index initialized ...