Because it lacks of the spaces before and after the string? This question also assumes you are only working with numbers: How to convert list into string with quotes in python. I'm guessing plenty has changed with Python since then. rev2023.4.21.43403. Stack Overflow . This can be achieved in Python using two ways: Using List comprehension and split () Using map () and split () Method 1: Using List comprehension and split () split () function helps in getting multiple inputs from the user. There isn't any need to import anything or to evaluate. @jmanning2k using a list comprehension has the downside of creating a new temporary list. It is also possible to use writer.writerows(iterable) to output multiple rows to csv. Linux), you can omit the trailing '-'. This solution works like charm if the list of values is present as text. Note the embedded comma in 'H, 4' and the embedded new line in 'Header\n1' that may trip up efforts to decode if not properly encoded. 565), Improving the copy in the close modal and post notices - 2023 edition, New blog post from our CEO Prashanth: Community is the future of AI. So, following all the answers I decided to time the most common methods: You can save yourself the .strip() function by just slicing off the first and last characters from the string representation of the list (see the third line below): And with pure Python - not importing any libraries: This is another solution if you don't want to import any library: The caveat to this method is that it doesn't work if you have comma inside your string for example if your input is. Python String to Array - How to Convert Text to a List - FreeCodecamp Is there a quick function that I'm not aware of? Is there something better about this compared to, Python: How to add single quotes to a long list, Join a list of strings in python and wrap each string in quotation marks, How to convert list into string with quotes in python. Embedded hyperlinks in a thesis or research paper. Short story about swapping bodies as a job; the person who hires the main character misuses his body. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. How can I convert this string to list of lists? This is the most Javascript answer ever. What were the most popular text editors for MS-DOS in the 1980s? How do I count the occurrences of a list item? Parabolic, suborbital and ballistic trajectories all follow elliptic paths. What is the python "with" statement designed for? Beginner kit improvement advice - which lens should I consider? Looking for job perks? This does not work if you have a list of words that you want to turn to strings, however; Python thinks you are calling variables (e.g. This should be applicable to lists with any length. Experts, please, tell why isn't this upvoted as the best solution? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. This can be used for evaluating strings containing Python values without the need to parse the values oneself. What's the cheapest way to buy out a sibling's share of our parents house if I have no cash and want to pay less than the appraised value? Very interesting, thank you for noting this. Content Discovery initiative April 13 update: Related questions using a Review our technical responses for the 2023 Developer Survey. You can take input as string and split it to list To convert a Python list to a comma-separated string, you will want to use the join () method. You need to parse the elements of the list into a table - and then it can be utilized. If total energies differ across different software, how do I decide which software to use? How to convert comma-delimited string to list in Python? How do I make the first letter of a string uppercase in JavaScript? Then I'm using readlines () converted to list of strings. update: I got it to work as below, but I would prefer a cleaner way if possible. If total energies differ across different software, how do I decide which software to use? Examples: Input: List<String> = ["Geeks", "ForGeeks", "GeeksForGeeks"] Output: "Geeks, For, Geeks" Input: List<String> = ["G", "e", "e", "k", "s"] Output: "G, e, e, k, s" Approach: This can be achieved with the help of join () method of String as follows. Convert string representation of list to list in Python. (The JSON method demands double-quotes, but does process escape sequences.) Find centralized, trusted content and collaborate around the technologies you use most. I could manually convert every element from int to string, insert this into a new list, and then do the join on this new list, but I'm wondering if there is a cleaner solution. My phone's touchscreen is damaged. How do I parse a string to a float or int? It is not capable of evaluating arbitrarily complex expressions, for example involving operators or indexing. python fast''' Solution: to convert a list of strings to a string, call the '\n'.join (list) method on the newline character '\n' that glues together all strings in the list and returns a new string. "Signpost" puzzle from Tatham's collection, Literature about the category of finitary monads, Limiting the number of "Instance on Points" in the Viewport. The file 'test.csv' that the csv module produces: Note the quoting around "Header\n1" and "H, 4"` in the file so that the csv is correctly decoded in the future. "Signpost" puzzle from Tatham's collection. Define a regular expression pattern that matches commas followed by any number of spaces (",\s*"). When there are 1+ items in the list (if not, just use the first element): Edit: If you need an Oxford comma (didn't know it even existed!) Remove empty strings from a list of strings, Generic Doubly-Linked-Lists C implementation. My phone's touchscreen is damaged. How about saving the world? How to Convert Python List to String - Definitive Guide Python knows a number of compound data types, used to group together other values. It uses the solution by RootTwo given in a comment on that answer: It's generally bad practice to use + when combining strings, as it is generally slow. What woodwind & brass instruments are most air efficient? Parabolic, suborbital and ballistic trajectories all follow elliptic paths. How to convert my dictionary query to properly formatted string without getting garbage? From the docs: Return a string which is the concatenation of the strings in the iterable iterable. How a top-ranked engineering school reimagined CS curriculum (Ep. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Checks and balances in a 3 branch market economy. Obviously it gets more complicated if you need to quote/escape commas etc in the values. Making statements based on opinion; back them up with references or personal experience. :param string: A string to be split into chunks :param separator: A separator character :param quote: A character to define beginning and end of the quoted string :return: A list of strings, one element for every chunk """ comma_separated_list = [] chunk = '' in_quotes = False for character in rev2023.4.21.43403. Convert List to Comma-Separated String in Python | Delft Stack What does "up to" mean in "is first up to launch"? Did the drapes in old theatres actually say "ASBESTOS" on them? The string or node provided may only consist of the following Python literal structures: strings, bytes, numbers, tuples, lists, dicts, sets, booleans, None and Ellipsis. What does 'They're at four. e.g. Effect of a "bad grade" in grad school applications. Split by comma and how to exclude comma from quotes in split i have a list and want it as a string with quotes python how to form list to comma separated string for with correct my_list = [1, baz, ctrl, 4 ]) and throws a NameError message. @SerialDownvoter: Can you please respond on posts that you downvote? You can get a pretty good. python - How to convert string representation of list to a list - Stack Generic Doubly-Linked-Lists C implementation. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. rev2023.4.21.43403. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. wasn't aware of the eval danger when answer was posted. How to output a comma delimited list in jinja python template? Python - Custom Split Comma Separated Words - GeeksForGeeks Connect and share knowledge within a single location that is structured and easy to search. How would you count occurrences of a string (actually a char) within a string? Futuristic/dystopian short story about a man living in a hive society trying to meet his dying mother. How can I make a dictionary (dict) from separate lists of keys and values? Return a list of the words in the string, using sep as the delimiter string. The comma-separated values can be in any order. Might as well round out the solutions with a recursive example. Has the cause of a rocket failure ever been mis-identified, such that another launch failed due to the same problem? Here is a alternative solution in Python 3.0 which allows non-string list items: >>> alist = ['a', 1, (2, 'b')] a standard way >>> ", ".join (map (str, alist)) "a, 1, (2, 'b')" the alternative solution >>> import io >>> s = io.StringIO () >>> print (*alist, file=s, sep=', ', end='') >>> s.getvalue () "a, 1, (2, 'b')" The StringIO object is similar to a file object but in memory to work with texts. It works with integers, strings (with 'crazy characters' as well) and it's just 1 line of code. Does Python have a string 'contains' substring method? Consider the following in order to handle the case of an empty string: You can split that string on , and directly get a list: You can use this function to convert comma-delimited single character strings to list-. Could you please tell me what why did you say The, this would still preserve the spaces inside the quotes. Cautionary note: this could potentially be dangerous if any of the strings inside list has a comma in between. Why typically people don't use biases in attention mechanism? So if someone puts a call to delete everything in there, it happily will. I like simpler an one-line code in python: It's pythonic, works for strings, numbers, None and empty string. Here is a alternative solution in Python 3.0 which allows non-string list items: NOTE: The space after comma is intentional. In order to do that, we will use a method split (). Why do men's bikes have high bars where you can hit your testicles while women's bikes have the bar much lower? How can I fill out a Python string with spaces? And if the list contains non-string types (such as integers, floats, bools, None) then do: Why the map/lambda magic? I hope this is not considered Pythonic :), my (and @wim's) comment above applies to @Daniel's original answer which he replaced with the completely different, and novel, approach currently listed above. Embedded hyperlinks in a thesis or research paper. Convert a comma-separated String to a List in Python How to check whether a string contains a substring in JavaScript? @timgeb, Python list of strings to 1 string separated by comma & quotes (, & "). now the s is 'test's','test','test's more' Making statements based on opinion; back them up with references or personal experience. You take, the list comprehension seems to bee slower than the. To summarize, converting python List to String is one of the commonly used functionality. If you are running a GNU coreutils based system (i.e. If the list is not going to contain numbers, we can use this simpler variation: Also this solution doesn't create a new list, but uses an iterator, like @Peter Hoffmann pointed (thanks). To get the last item of a iterable is not that easy, because you cannot get the length, because it may be unknown in advance. Looking for job perks? My two cents. How about saving the world? Counting and finding real solutions of an equation. The join() function will insert any string you like between elements but does nothing for each end of the list. Content Discovery initiative April 13 update: Related questions using a Review our technical responses for the 2023 Developer Survey. Literature about the category of finitary monads. How a top-ranked engineering school reimagined CS curriculum (Ep. Unexpected uint64 behaviour 0xFFFF'FFFF'FFFF'FFFF - 1 = 0? How do I break a string in YAML over multiple lines? Would you ever say "eat pig" instead of "eat pork"? How to remove an element from a list by index, Creating a comma separated list from IList
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