Correction for Craigs answer above for a 2-element list (Im not allowed to comment): I cannot take full credit but if you want succinct -- I modified RoadieRich's answer to use f-strings and also made it more concise. How do I split a list into equally-sized chunks? Is there a weapon that has the heavy property and the finesse property (or could this be obtained)? You need to use the, python how to form list to comma separated string for with correct quote for sql where in statement. Looking for job perks? rev2023.4.21.43403. So using split (',') creates problems. How to create a virtual ISO file from /dev/sr0. rev2023.4.21.43403. On what basis are pardoning decisions made by presidents or governors when exercising their pardoning power? This solution works like charm if the list of values is present as text. Asking for help, clarification, or responding to other answers. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Not the answer you're looking for? Creating a comma separated list from IList or IEnumerable, How to convert string representation of list to a list. What is Wario dropping at the end of Super Mario Land 2 and why? One additional method for splitting comma-separated words in Python is using the re.split () method from the re module. How would you make a comma-separated string from a list of strings? This can be used for evaluating strings containing Python values without the need to parse the values oneself. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Connect and share knowledge within a single location that is structured and easy to search. Asking for help, clarification, or responding to other answers. Creating a comma separated list from IList or IEnumerable, Convert a String representation of a Dictionary to a dictionary. Python 3.7. Why? Can you still use Commanders Strike if the only attack available to forego is an attack against an ally? Is it possible to control it remotely? Content Discovery initiative April 13 update: Related questions using a Review our technical responses for the 2023 Developer Survey, Python converts from strings of word into list of word. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. I would say the csv library is the only sensible option here, as it was built to cope with all csv use cases such as commas in a string, etc. It's short and satisfies the requirements. How to convert comma-delimited string to list in Python? How a top-ranked engineering school reimagined CS curriculum (Ep. Why typically people don't use biases in attention mechanism? Looking for job perks? What was the actual cockpit layout and crew of the Mi-24A? How do I read / convert an InputStream into a String in Java? By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Parabolic, suborbital and ballistic trajectories all follow elliptic paths. Creating a comma separated list from IList or IEnumerable. my_list), assigning it to list brackets, and then populating the list with elements, surrounded by single quotes: I want to know if there is a quicker way to make a list, however. Connect and share knowledge within a single location that is structured and easy to search. What was the actual cockpit layout and crew of the Mi-24A? Stack Overflow . The manual method is simply not as powerful, and does less work, so it's not surprising that it's faster. Unexpected uint64 behaviour 0xFFFF'FFFF'FFFF'FFFF - 1 = 0? How do I convert a String to an int in Java? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. How to give a counterexample of this estimate related to Paley-Littlewood theorem? list_of_strings = ["A", "List", "Of", "Strings"]. What is scrcpy OTG mode and how does it work? Find centralized, trusted content and collaborate around the technologies you use most. How do I make a flat list out of a list of lists? Thanks for contributing an answer to Stack Overflow! Why does Acts not mention the deaths of Peter and Paul? The junkers variable contains a compiled regexp (for speed) of all characters we don't want, using ] as a character required some backslash trickery. I would like to provide a more intuitive patterning solution with regex. main.py. Step-by-step approach: Import the re module. I'm guessing plenty has changed with Python since then. Solution by Jay Riggs is correct for the original poster's situation. The more items you have to flatten chain does it a bit more efficiently: I think this was the easiest way (thanks to a friend who helped with this). That is, how do you map, for instance, ['a', 'b', 'c'] to 'a,b,c'? When a gnoll vampire assumes its hyena form, do its HP change? How do I replace all occurrences of a string in JavaScript? 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. Effect of a "bad grade" in grad school applications. This solution doesn't produce the expected output. 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. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Unexpected uint64 behaviour 0xFFFF'FFFF'FFFF'FFFF - 1 = 0? Separator characters inside the quotes are ignored. Parsing a string which represents a list of tuples, How to convert array string to an array in python. @Tomerikoo how about you store list in file and than use any method here to restore it. How to create a virtual ISO file from /dev/sr0. How about saving the world? This is the most Javascript answer ever. Not the answer you're looking for? 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. Unexpected uint64 behaviour 0xFFFF'FFFF'FFFF'FFFF - 1 = 0? How to convert list into string with quotes in python Ask Question Asked 10 years ago Modified 1 year ago Viewed 24k times 8 i have a list and want it as a string with quotes mylist = [1,2,3] require O/P as myString = "'1','2','3'" i tried mystring = '\',\''.join (mylist) it gave me result as mystring = "1','2','3" Why is reading lines from stdin much slower in C++ than Python? Might as well round out the solutions with a recursive example. What would be your preferred way to concatenate strings from a sequence such that between every two consecutive pairs a comma is added. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. How is white allowed to castle 0-0-0 in this position? Content Discovery initiative April 13 update: Related questions using a Review our technical responses for the 2023 Developer Survey. How about saving the world? What woodwind & brass instruments are most air efficient? An example of such string "coffee", "water, hot" What I want to achieve ["coffee", "water, hot"] python Share Improve this question 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. To learn more, see our tips on writing great answers. To learn more, see our tips on writing great answers. On what basis are pardoning decisions made by presidents or governors when exercising their pardoning power? I'd like to split the string on commas; however, in the case where something is inside double quotation marks, I need it to both ignore commas and strip out the quotation marks. rev2023.4.21.43403. I could use this suggestion because I knew my data was always gonna be in that format and was a data processing work. How to check whether a string contains a substring in JavaScript? Word order in a sentence with two clauses, Checks and balances in a 3 branch market economy, Tikz: Numbering vertices of regular a-sided Polygon, English version of Russian proverb "The hedgehogs got pricked, cried, but continued to eat the cactus", How to create a virtual ISO file from /dev/sr0. Literature about the category of finitary monads. How a top-ranked engineering school reimagined CS curriculum (Ep. Is it safe to publish research papers in cooperation with Russian academics? How do I make the first letter of a string uppercase in JavaScript? (The cases ['s'] and [] should be mapped to 's' and '', respectively.). Making statements based on opinion; back them up with references or personal experience. Doesn't this work? Is there a generic term for these trajectories? Find centralized, trusted content and collaborate around the technologies you use most. Remove empty strings from a list of strings, Generic Doubly-Linked-Lists C implementation. 2. String is enclosed either with single quotes or double quotes. How do I parse a string representing a nested list into an actual list? (The JSON method demands double-quotes, but does process escape sequences.) str.join only accepts an iterable of strings, not one of integers. Why in the Sierpiski Triangle is this set being used as the example for the OSC and not a more "natural"? pyparsing includes a predefined expression for comma-separated lists: >>> from pyparsing import commaSeparatedList >>> s = "1,,2'3,4'" >>> print commaSeparatedList.parseString (s).asList () ['1', '', "2'3", "4'"] Hmm, looks like you have a typo in your data, missing a comma after the 2: VASPKIT and SeeK-path recommend different paths. How to convert comma-delimited string to list in Python? This solution is simpler than some I read in the previous answers, but it requires to match all features of the list. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, @Julien I think you deleted it because it can be directly be a list, instead of a string (and if wanted a string do. Looking for job perks? Not the answer you're looking for? Can someone explain why this point is giving me 8.3V? Asking for help, clarification, or responding to other answers. Connect and share knowledge within a single location that is structured and easy to search. Well but what to do if the List does not have quotes? What is the python "with" statement designed for? Return a list of the words in the string, using sep as the delimiter string. Looking for job perks? Can you still use Commanders Strike if the only attack available to forego is an attack against an ally? Futuristic/dystopian short story about a man living in a hive society trying to meet his dying mother, Ethical standards in asking a professor for reviewing a finished manuscript and publishing it together. To provide overly complex alternatives is a pointless waste of time. And if the list contains non-string types (such as integers, floats, bools, None) then do: Why the map/lambda magic? I have a string for items separated by comma. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. 1. Are there any canonical examples of the Prime Directive being broken that aren't shown on screen? How do I split a list into equally-sized chunks? Why does Acts not mention the deaths of Peter and Paul? Define a regular expression pattern that matches commas followed by any number of spaces (",\s*"). Since you are appending the returned list to newlist, you are getting a list of lists. python string list to list ast.listeral_eval, Converting a string that represents a list, into an actual list object. How do I get the number of elements in a list (length of a list) in Python? 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. How do I make a flat list out of a list of lists? wasn't aware of the eval danger when answer was posted. You can always encode quotes before you build your string. WHERE column IN (@listpar) Then formatting the string isn't going to work. "Signpost" puzzle from Tatham's collection. What is the Russian word for the color "teal"? rev2023.4.21.43403. Can you still use Commanders Strike if the only attack available to forego is an attack against an ally? 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. In that case I would suggest looking at the csv module in the standard library: my_list may contain any type of variables. I like simpler an one-line code in python: It's pythonic, works for strings, numbers, None and empty string. Per comment below, this is dangerous as it simply runs whatever python is in the string. split () splits a string into a list. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. @wim agree, it's pretty bad. It will not handle escape sequences in the strings, or a different quote type. What does "up to" mean in "is first up to launch"? To solve that, you can either test the length of the list ( if len (items) >= 2: ), or do this, which (imho) is slightly more pythonic: def comma (items): start, last = items [:-1], items [-1] if start: return " {}, and {}".format (", ".join (start), last) else: return last Why do men's bikes have high bars where you can hit your testicles while women's bikes have the bar much lower? Convert string representation of list to list in Python. Python: how to add a list to an existing txt file and it has to include the commas in the text file? Does Python have a string 'contains' substring method? Just some data with apostrophe is all I wanted. When a gnoll vampire assumes its hyena form, do its HP change? Literature about the category of finitary monads. Assuming that all your inputs are lists and that the double quotes in the input actually don't matter, this can be done with a simple regexp replace. Thank you all for your input/shortcuts. 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? How to have multiple colors with a single material on a single object? Are double and single quotes interchangeable in JavaScript? Which one to choose? Converting a list into comma-separated string with "and" before the last item - Python 2.7. e.g. I want to convert it to one new string looking like: new_string=""" "A", "List", "Of", "Strings" """, ( By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Method 1: Using str.split (',') Not the answer you're looking for? There isn't any need to import anything or to evaluate. I want to know the quickest way to add single quotes to each element in a Python list created by hand. eval is not recommended in several places on this thread as it will simple run as code whatever is entered, presenting a security risk. The json.loads(your_data) function can be used to convert it to a list. Select a blank cell adjacent to the list's first data, for instance, the cell C1, and type this formula =CONCATENATE (TRANSPOSE (A1:A7)&",") ( A1:A7 is the column you will convert to comma serrated list, "," indicates the separator you want to separate the list). This is superfluous. Could a subterranean river or aquifer generate enough continuous momentum to power a waterwheel for the purpose of producing electricity? Code: Let's have a look at the code. This question is just for educational purposes. A minor scale definition: am I missing something? Can my creature spell be countered if I cast a split second spell after it? Find centralized, trusted content and collaborate around the technologies you use most. Obviously it gets more complicated if you need to quote/escape commas etc in the values. This is an open invitation to arbitrary code execution, NEVER do this or anything like it unless you know with absolute certainty that the input will always be 100% trusted. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. What does the power set mean in the construction of Von Neumann universe? 3 lines of code can accomplish this and you add a library? Find centralized, trusted content and collaborate around the technologies you use most. Would you ever say "eat pig" instead of "eat pork"? i want to sort the list of objects based on the attribute of that object without considering the special characters. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, hi @TinNguyen it prints this select package_type from slack_jira where severity = 'MEDIUM' and record_hash in ('AAA,BBB'), okay then there is no way around that. This usually happens when you load list stored as string to CSV. Making statements based on opinion; back them up with references or personal experience. And so you can change it to: def create_list (data): return list (str (data)) I find it easier to read create_command if you merge some of the lines together: But it's simple, doesn't involve a dangerous eval, and might be good enough for your purpose if you're on an older Python without ast. In order to do that, we will use a method split (). 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. How about saving the world? But this doesn't escape the single quotes. What is Wario dropping at the end of Super Mario Land 2 and why? Why is it string.join(list) instead of list.join(string)? Which was the first Sci-Fi story to predict obnoxious "robo calls"? To learn more, see our tips on writing great answers. Python string functions are very popular. My two cents. Find centralized, trusted content and collaborate around the technologies you use most. How would you count occurrences of a string (actually a char) within a string? Connect and share knowledge within a single location that is structured and easy to search. Could a subterranean river or aquifer generate enough continuous momentum to power a waterwheel for the purpose of producing electricity?