my_list = ['a', 'b', 'c', 'd']
my_string = ','.join(my_list)
'a,b,c,d'
This won't work if the list contains integers
And if the list contains non-string types (such as integers, floats, bools, None) then do:
my_string = ','.join(map(str, my_list))
Top answer 1 of 15
1351
my_list = ['a', 'b', 'c', 'd']
my_string = ','.join(my_list)
'a,b,c,d'
This won't work if the list contains integers
And if the list contains non-string types (such as integers, floats, bools, None) then do:
my_string = ','.join(map(str, my_list))
2 of 15
97
Why the map/lambda magic? Doesn't this work?
>>> foo = ['a', 'b', 'c']
>>> print(','.join(foo))
a,b,c
>>> print(','.join([]))
>>> print(','.join(['a']))
a
In case if there are numbers in the list, you could use list comprehension:
>>> ','.join([str(x) for x in foo])
or a generator expression:
>>> ','.join(str(x) for x in foo)
freeCodeCamp
freecodecamp.org › news › python-list-to-string-join-example
List to String Python – join() Syntax Example
April 7, 2022 - So again, the syntax is [seperator].join([list you want to convert into a string]). In this case, I used a comma as my separator, but you could use any character you want.
How to convert a list of longs into a comma separated string in python - Stack Overflow
I'm new to python, and have a list ... into a comma separated string. ... In Python, I'm not sure how to do this. I've tried using join, but this doesn't work since the elements are the wrong type (i.e., not strings). Do I need to create a copy of the list and convert each element in the copy from a long into a string? Or is there a simpler way to do it? ... Not a duplicate; the solution suggested in #44778 (",".join(list)) only works for a list of strings. With a list of ... More on stackoverflow.com
Converting word values to comma separated list with ‘, and ‘ before last value.
If you want to use the original for loop add a condition for the last element. You can use enumerate to get element and index at the same time More on reddit.com
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1
January 24, 2022How do I convert an array to a string with commas in JavaScript
...you get a better, more thorough explanation here: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/join More on reddit.com
1
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April 13, 2023Beginner code review: Convert comma-separated string to vector
If you wanted to avoid nest match statements, you could use if let else which would make it easier to read or add/remove/re-order items if needed: fn parse(s: &str) -> Item<'_> { if let Ok(i) = s.parse::() { Item::Int(i) } else if let Ok(f) = s.parse::() { Item::Float(f) } else { Item::String(s) } } More on reddit.com
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July 4, 2023GeeksforGeeks
geeksforgeeks.org › python › join-list-with-separator-in-python
Join List With Separator in Python - GeeksforGeeks
July 23, 2025 - For example, given the list a = ... resulting in a string like this: "GFG,Java,DSA". str.join() is the most efficient way to join elements of a list with a separator ....
GeeksforGeeks
geeksforgeeks.org › python › convert-lists-to-comma-separated-strings-in-python
Convert Lists to Comma-Separated Strings in Python - GeeksforGeeks
July 23, 2025 - The join method joins each element of the list with a specified separator, in this case, a comma.
Finxter
blog.finxter.com › home › learn python blog › 5 best ways to join a list of integers with commas in python
5 Best Ways to Join a List of Integers with Commas in Python - Be on the Right Side of Change
February 24, 2024 - It is very similar to the map-based ... ... Here, we use a list comprehension to convert every integer in the list to a string, and then the join() method concatenates these strings, separated by commas....
Delft Stack
delftstack.com › home › howto › python › list to comma separated string in python
How to Convert List to Comma-Separated String in Python | Delft Stack
February 2, 2024 - The join() method then concatenates these string elements with commas as separators, resulting in a single string stored in the variable result_string. ... In this output, you can observe that the elements of the list have been successfully ...
Python Examples
pythonexamples.org › python-join-list-with-comma
Python - Join List with Comma
To join a given list of elements with comma separator into a Python string, call string join() method on comma character ",", and pass the given list as argument to the join() method.
TutorialsPoint
tutorialspoint.com › How-would-you-make-a-comma-separated-string-from-a-list-in-Python
Python program to convert list of string to comma separated string
April 17, 2025 - fruits = ["Apple", "Banana", "Mango", "Orange"] comma_separated = ', '.join(fruits) print("Original List:") print(fruits) print("Comma Separated String:") print(comma_separated) Original List: ['Apple', 'Banana', 'Mango', 'Orange'] Comma Separated String: Apple, Banana, Mango, Orange · When your list contains non-string elements, convert them to strings first ? numbers = [235, 3754, 856, 964] comma_separated = ', '.join(str(num) for num in numbers) print("Original List:") print(numbers) print("Comma Separated String:") print(comma_separated)
Finxter
blog.finxter.com › home › learn python blog › 5 best ways to join a list of strings with a comma in python
5 Best Ways to Join a List of Strings with a Comma in Python - Be on the Right Side of Change
February 18, 2024 - This one-liner uses a generator expression directly inside the join() function, creating an efficient means of concatenating the list items with a comma.
Wsldp
elearning.wsldp.com › python3 › how-to-convert-python-list-to-comma-separated-string
How To Convert Python List to Comma Separated String
September 16, 2021 - To convert a Python list to a comma-separated string, you will want to use the join() method.
Centron
centron.de › home › tutorials › python join list - tutorial
Python Join List - Tutorial – centron
February 7, 2025 - This was just a demonstration that a list which contains multiple data-types cannot be combined into a single String with join() function. List must contain only the String values. We can use join() function to split a string with specified delimiter too. ... names = 'Python' delimiter = ',' single_str = delimiter.join(names) print('String: {0}'.format(single_str))
DigitalOcean
digitalocean.com › community › tutorials › python-join-list
Join Python List: Methods, Examples, and Best Practices | DigitalOcean
Learn how to join a Python list using join(), +, extend(), and itertools.chain(). See real code examples, benchmarks, and best practices.
Java2Blog
java2blog.com › home › python › python list › convert list to comma separated string in python
Convert List to Comma Separated String in Python [3 ways] - Java2Blog
December 16, 2022 - To convert a list to a comma separated string in Python, use the .join() method. join() method takes all elements in an iterable and joins them into one string with delimiter as separator.
Dot Net Perls
dotnetperls.com › join-python
Python - String join Examples (Get String From List) - Dot Net Perls
list = ["a", "b", "c"] # Join with empty string literal. result = "".join(list) # Join with comma. result2 = ",".join(list) # Display results.
Kodeclik
kodeclik.com › python-list-to-string-with-commas
Convert a Python list to a String
October 16, 2024 - This method is particularly useful ... a Python list to a comma-separated string is by using the map() function in combination with the str() function and the join() method....
Real Python
realpython.com › python-join-string
How to Join Strings in Python – Real Python
October 22, 2025 - Suppose you have a list of fruit names that you want to pack into a single string with each fruit separated by a comma. You can handle this in one line: ... >>> fruits = ["apple", "orange", "lemon", "kiwi"] >>> csv_line = ",".join(fruits) >>> print(csv_line) apple,orange,lemon,kiwi · If you save or print this data to a file, you can handle it as a line in a basic CSV format. This approach is quick and efficient. However, keep in mind that if you need to handle quotes or complex CSV structures, then you should use Python’s dedicated csv library.
Techie Delight
techiedelight.com › home › python › create a comma-separated string from a list of strings in python
Create a comma-separated string from a list of strings in Python | Techie Delight
July 7, 2026 - This post will discuss how to create a comma-separated string from a list of strings in Python... The preferred approach to creating a comma-separated string from a list of strings is with the `str.join()` function.
freeCodeCamp
freecodecamp.org › news › python-join-how-to-combine-a-list-into-a-string-in-python
Python join() – How to Combine a List into a String in Python
January 3, 2023 - Let's say we have this nested dictionary · d = { "event": { "world cup":{ "sport":"Football", "info":{"year":"2022", "country":"Argentina"} } } } We can use join() to extract a comma separated string with the keys and values like this:
Reddit
reddit.com › r/learnpython › converting word values to comma separated list with ‘, and ‘ before last value.
r/learnpython on Reddit: Converting word values to comma separated list with ‘, and ‘ before last value.
January 24, 2022 -
I’m new to Python, and, unfortunately, have submitted myself to an operational path of a cybersecurity masters program. This weeks assignment had us take a list (apples, bananas, tofu, cats) and modify the the function to print out: ‘apples, bananas, tofu, and cats’ The script that they gave us to modify was the following:
if name == ‘main’: spam = [‘apples’, ‘bananas’, ‘tofu’, ‘cats’] spam_str = ‘’ for spam_item in spam: print(“Spam item: “ + spam_item) spam_str = spam_str + spam_item print(“Spam str: “ + spam_str) print(spam_str)
As written, it ends up with the output:
Spam item: apples Spam str: apples Spam item: bananas Spam str: applesbananas …. Spam str: applesbananastofucats
Somehow, in line 6, we were supposed to modify the function only output the desired:
apples, bananas, tofu, and cats
I’ve been banging my head on my desk trying to figure this out and have gotten as far as modifying the for statement to get me:
apples, bananas, tofu, cats,
For the life of me, I can’t seem to find the correct way to get just the 3 commas and an ‘and’ before the last item.
To make it more interesting, we were given other lists as well in which we should be able to input the same modified solution to add those commas and the final ‘, and ‘ (other samples were names of cities and other items with varying lengths of items listed).
I hoping the power of Reddit can figure out an answer while explaining how it works. I’m the type of person that needs to see the answer to figure out the mechanics behind it and be able to apply it to different situations….