Stack Overflow
stackoverflow.com › questions › 3136689 › find-and-replace-string-values-in-list
python - Find and replace string values in list - Stack Overflow
I got this list: words = ['how', 'much', 'is[br]', 'the', 'fish[br]', 'no', 'really'] What I would like is to replace [br] with some fantastic value similar to and thus getting a new ...
GeeksforGeeks
geeksforgeeks.org › python › python-replace-substring-in-list-of-strings
Replace substring in list of strings - Python - GeeksforGeeks
July 11, 2025 - The replace() function replaces all occurrences of "world" with "universe" in each string. List comprehension iterates through the list and applies replace() to every string.
python - How to replace a character within a string in a list? - Stack Overflow
I have a list that has some elements of type string. Each item in the list has characters that are unwanted and want to be removed. For example, I have the list = ["string1.", "strin... More on stackoverflow.com
A list of string replacements in Python - Stack Overflow
Copymapping = [ ('A', '1'), ('B', ... for k, v in mapping: my_string = my_string.replace(k, v) ... It's odd; that's the way I'd write it, because the problem is all about mapping from one character to another. But really, you're not using the dict as a dict; you're using it as a list of ... More on stackoverflow.com
Making str.replace() accept lists - Ideas - Discussions on Python.org
Syntax of the method: str.replace(old, new, count=-1) What if replace could accept two lists instead of two strings. Often I find in code: text.replace(a, b).replace(c, d) The concatenation of replace calls can cause a unnecessary performance hit if the string is large or the call is the calls ... More on discuss.python.org
3
May 9, 2020python - Replace in strings of list - Stack Overflow
Bring the best of human thought and AI automation together at your work. Explore Stack Internal ... If I use this on list of strings then I am not getting the result. More on stackoverflow.com
01:32
Python 3 | String Replace for Beginners #coding #programming #python ...
13:47
Replacing a String In a String in Python - YouTube
15:33
List Replace Python - The EASIEST Methods - YouTube
02:38
python replace character in string in list - YouTube
03:59
Replace A Range Of List Items | Python Tutorial - YouTube
How To Replace One Character In A String In Python
Reddit
reddit.com › r/learnpython › trying to replace characters in a list of strings?
r/learnpython on Reddit: Trying to replace characters in a list of strings?
January 9, 2023 -
I'm trying to replace the same characters in a list of strings but nothing is happening?
list = ["stacy", "tracy", "kacy"]
newlist=[]
for x in list:
x.replace("cy","fi")
newlist.append(x)
print(newlist)What's wrong here?
Top answer 1 of 2
38
Strings are immutable, replace doesn't operate in place but returns a new string. x = x.replace("cy","fi") Note that the whole thing can be done as a list comprehension: newlist = [ x.replace("cy","fi") for x in list] Also, don't call your own variables 'list'.
2 of 2
1
y = x.replace("cy","fi") newlist.append(y) do something like this hope that helps you
Note.nkmk.me
note.nkmk.me › home › python
Extract and Replace Elements That Meet the Conditions of a List of Strings in Python | note.nkmk.me
May 19, 2023 - To replace the whole element containing a specific string, use the in operator to extract it and apply conditional expressions (ternary operator), formatted as X if condition else Y. ... Use conditional expressions for the expression part of ...
stataiml
stataiml.com › posts › 35_find_replace_string_python_list
Find and Replace Values in List in Python - stataiml
May 3, 2024 - You can find and replace string values in a list using a list comprehension or map() function in Python.
GeeksforGeeks
geeksforgeeks.org › python › how-to-replace-values-in-a-list-in-python
Replace Values in a List in Python - GeeksforGeeks
It works when the index of the element to be replaced is already known. ... This method checks every element in the list and replaces only those values that satisfy a given condition, while rebuilding the list in a single expression using list comprehension.
Published: January 12, 2026
W3Schools
w3schools.com › python › ref_string_replace.asp
Python String replace() Method
Remove List Duplicates Reverse ... Study Plan Python Interview Q&A Python Training ... The replace() method replaces a specified phrase with another specified phrase....
Analytics Vidhya
analyticsvidhya.com › home › how to replace values in a list in python?
How to Replace Values in a List in Python? - Analytics Vidhya
April 23, 2025 - A. Yes, you can replace a value in a list in Python using various methods such as indexing, list comprehension, built-in functions like replace() for strings within lists, or functional programming tools like map().
Stack Overflow
stackoverflow.com › questions › 72378766 › how-to-replace-a-character-within-a-string-in-a-list
python - How to replace a character within a string in a list? - Stack Overflow
I have a list that has some elements of type string. Each item in the list has characters that are unwanted and want to be removed. For example, I have the list = ["string1.", "strin...
Statistics Globe
statisticsglobe.com › home › python programming language for statistics & data science › replace string in list in python (example)
Replace Character String in List in Python (Example) | Update Text
July 7, 2023 - By iterating over the list and using conditional statements, we can modify specific elements based on their string values. Do you need more explanations on looping through a list of integers in Python?
Top answer 1 of 8
74
Looks like a good opportunity to use a loop:
mapping = { 'A':'1', 'B':'2', 'C':'3', 'D':'4', 'E':'5'}
for k, v in mapping.iteritems():
my_string = my_string.replace(k, v)
A faster approach if you don't mind the parentheses would be:
mapping = [ ('A', '1'), ('B', '2'), ('C', '3'), ('D', '4'), ('E', '5') ]
for k, v in mapping:
my_string = my_string.replace(k, v)
2 of 8
51
You can easily use string.maketrans() to create the mapping string to pass to str.translate():
import string
trans = string.maketrans("ABCDE","12345")
my_string = my_string.translate(trans)
GeeksforGeeks
geeksforgeeks.org › python › python-replace-substrings-from-string-list
Replace Substrings from String List - Python - GeeksforGeeks
July 12, 2025 - Explanation: for loop iterates through each string in the list, checking for substring matches and replacing them using str.replace(), ensuring all occurrences are updated systematically.
Python.org
discuss.python.org › ideas
Making str.replace() accept lists - Ideas - Discussions on Python.org
May 9, 2020 - Syntax of the method: str.replace(old, new, count=-1) What if replace could accept two lists instead of two strings. Often I find in code: text.replace(a, b).replace(c, d) The concatenation of replace calls can cause a unnecessary performance hit if the string is large or the call is the calls ...
Finxter
blog.finxter.com › home › learn python blog › 5 best ways to replace strings in python lists
5 Best Ways to Replace Strings in Python Lists - Be on the Right Side of Change
February 16, 2024 - The map() function applies a given function to all items in an input list. You can use it in conjunction with a lambda function to replace strings in a list, though it requires conversion back to a list type.
GeeksforGeeks
geeksforgeeks.org › how-to-replace-values-in-a-list-in-python
How to Replace Values in a List in Python? - GeeksforGeeks
Since strings in Python are immutable, any modification requires creating a new string with the desired changes. For example, if we have a string like "Hello, World!", we mi ... Lists in Python have various built-in methods to remove items such as remove, pop, del and clear methods.
Published: January 4, 2025
Python Pool
pythonpool.com › home › tutorials › replace items in a python list: index, loop, map(), and slices
Replace Items in a Python List: Index, Loop, map(), and Slices
July 13, 2026 - Check duplicate values, nested data, bounds, aliasing, and whether a new list is safer than mutation. When the match rule is more complicated than equality, put it in a function or a clearly named condition. values = [3, 10, 15, 22] updated = [0 if value % 5 == 0 else value for value in values] print(updated) This replaces values divisible by five and preserves the order of every other item. A predicate makes the behavior testable and prevents a broad string replacement from changing values that only happen to contain the same text.
datagy
datagy.io › home › python posts › python: replace item in list (6 different ways)
Python: Replace Item in List (6 Different Ways) • datagy
August 12, 2022 - Learn how to replace an item or items in a Python list, including how to replace at an index, replacing values, replacing multiple values.
Top answer 1 of 2
1
>>> a = ["abcd:+;", "(l&'kka)"]
>>> a = [re.sub('[\(\)&\':+]', '', x) for x in a]
>>> a
['abcd;', 'lkka']
>>>
2 of 2
0
for index,x in enumerate(a):
a[index] = re.sub('[\(\)&\':+]', '', x)
Your changing the value but not updating your list. enumerate is function that return tuple (index,value) for each item of list
Spark By {Examples}
sparkbyexamples.com › home › python › python replace values in list with examples
Python Replace Values in List With Examples - Spark By {Examples}
May 31, 2024 - How to replace values or elements in list in Python? You can replace a list in python by using many ways, for example, by using the list indexing, list
Top answer 1 of 5
5
Your error seems to indicate that your string_list is not a list of string but a real string (that doesn't support assignement because a string is immutable).
If your string_list was a real list of strings, like this for example : string_list = ["first", "second", "", "fourth"], then you will be able to do string_list[2] = "third" to obtain string_list = ["first", "second", "third", "fourth"].
If you need to automatically detect where an empty string is located in your list, try with index :
string_list[string_list.index("")] = "replacement string"
print string_list
>>> ["first", "second", "replacement string", "fourth"]
2 of 5
2
You say you have a list of strings but from you error it looks like you're trying to index a string
l = ["a", "b", "", "c"]
Is a list of strings.
l = ["N" if not x else x for x in l]
Is a list of strings with empty strings replaced with "N"