python list to comma separated string with single quotes
Initialize the string to be split, test_str. On what basis are pardoning decisions made by presidents or governors when exercising their pardoning power? Python string functions are very popular. It's clear and is the only answer that actually meets the requirements of the OP. I usually end up using something like ''.join(map(lambda x: x+',',l))[:-1], but also feeling somewhat unsatisfied. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Connect and share knowledge within a single location that is structured and easy to search. Then I'm using readlines () converted to list of strings. Creating a comma separated list from IList or IEnumerable. Interpreting non-statistically significant results: Do we have "no evidence" or "insufficient evidence" to reject the null? - Paulo Scardine Jul 3, 2014 at 15:32 Add a comment 3 Answers Sorted by: 14 str.join only accepts an iterable of strings, not one of integers. Note that this also removes spaces from inside entries u'["oh no"]' ---> [u'ohno']. In order to do that, we will use a method split (). Literature about the category of finitary monads. Can you still use Commanders Strike if the only attack available to forego is an attack against an ally? Python knows a number of compound data types, used to group together other values. If total energies differ across different software, how do I decide which software to use? Which one to choose? How would you make a comma-separated string from a list of strings? Is it possible to control it remotely? 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. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. But the code was getting very kludgy. Since you are appending the returned list to newlist, you are getting a list of lists. How do I split a list into equally-sized chunks? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. 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. How about saving the world? 3 lines of code can accomplish this and you add a library? I have two stored sting variable I need to concat into a different variable for an api get request. How do I make a flat list out of a list of lists? Tikz: Numbering vertices of regular a-sided Polygon. Connect and share knowledge within a single location that is structured and easy to search. '*len(record_hash)), record_hash). I have a list of ints and want to create a comma-separated string. How can I make a dictionary (dict) from separate lists of keys and values? Well but what to do if the List does not have quotes? What does "up to" mean in "is first up to launch"? How to combine several legends in one frame? How a top-ranked engineering school reimagined CS curriculum (Ep. Literature about the category of finitary monads. 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. Connect and share knowledge within a single location that is structured and easy to search. This won't work if the list contains integers. rev2023.4.21.43403. You can use either map or a list comprehension: If you are dealing with a csv file that is something other than the trivial example here, please do remember you are better off using the csv module to read and write csv, since CSV can be surprisingly complex. Why is it string.join(list) instead of list.join(string)? Join list of string to comma separated and enclosed in single quotes. How do I read / convert an InputStream into a String in Java? I'm guessing plenty has changed with Python since then. The json.loads(your_data) function can be used to convert it to a list. What is the Russian word for the color "teal"? Step-by-step approach: Import the re module. Return a list of the words in the string, using sep as the delimiter string. if last: is just a pythonic way of checking if last is empty. How about saving the world? Does Python have a string 'contains' substring method? Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Thanks for contributing an answer to Stack Overflow! I am not working on a particular project at the moment. What is Wario dropping at the end of Super Mario Land 2 and why? When generating a list by hand, I generally start by creating a variable (e.g. Did the drapes in old theatres actually say "ASBESTOS" on them? Making statements based on opinion; back them up with references or personal experience. 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. @Tomerikoo how about you store list in file and than use any method here to restore it. this one is cool, I prefer the above one is because I need it in just one place to use it. Without using regex (which would simplify the replace), and assuming you want to return a flattened list (and the zen of python says flat is better than nested): If you need to retain the nested list it gets a bit uglier, but it can still be done just with regular expressions and list comprehension: This last solution will work on any list stored as a string, nested or not. English version of Russian proverb "The hedgehogs got pricked, cried, but continued to eat the cactus", Counting and finding real solutions of an equation, Tikz: Numbering vertices of regular a-sided Polygon. Content Discovery initiative April 13 update: Related questions using a Review our technical responses for the 2023 Developer Survey, Python: How to add single quotes to a long list, How do I add quotes to list element which contain / in python. What does "up to" mean in "is first up to launch"? Has depleted uranium been considered for radiation shielding in crewed spacecraft beyond LEO? The manual method is simply not as powerful, and does less work, so it's not surprising that it's faster. 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. My requirement, bringing me here, was to fill an SQL "WHERE x NOT IN ()" clause. This is superfluous. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. How would you make a comma-separated string from a list of strings? If this is not what you wanted, the regexp needs to be souped up a bit. python string list to list ast.listeral_eval, Converting a string that represents a list, into an actual list object. @timgeb, Python list of strings to 1 string separated by comma & quotes (, & "). rev2023.4.21.43403. Code: Let's have a look at the code. rev2023.4.21.43403. How about saving the world? rev2023.4.21.43403. 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: To learn more, see our tips on writing great answers. Making statements based on opinion; back them up with references or personal experience. It's been a while, but I think I've found a quick way following @U10-Forward's idea: Thanks for contributing an answer to Stack Overflow! ', referring to the nuclear power plant in Ignalina, mean? The following: How do I create the string? Why do men's bikes have high bars where you can hit your testicles while women's bikes have the bar much lower? Are there any canonical examples of the Prime Directive being broken that aren't shown on screen? Find centralized, trusted content and collaborate around the technologies you use most. You can always encode quotes before you build your string. "Signpost" puzzle from Tatham's collection. Can my creature spell be countered if I cast a split second spell after it? Are there any canonical examples of the Prime Directive being broken that aren't shown on screen? my_list = [1, baz, ctrl, 4 ]) and throws a NameError message. You need the double quotes on your string. What was the actual cockpit layout and crew of the Mi-24A? You've learned how to convert python list to string with different delimiters and a multiline String or a Tab-separated String. Python 3.7. Why? You can parse and clean up this list as needed using list comprehension. Ethical standards in asking a professor for reviewing a finished manuscript and publishing it together. 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? Why is it string.join(list) instead of list.join(string)? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Futuristic/dystopian short story about a man living in a hive society trying to meet his dying mother, English version of Russian proverb "The hedgehogs got pricked, cried, but continued to eat the cactus". Paste the column here (into the leftmost textbox) Copy your comma separated list from the rightmost textbox. Each item is surrounded by quotes ("), but the items can also contain commas (,). Use the int () class to convert each string to an integer. How do I replace all occurrences of a string in JavaScript? How do I make a flat list out of a list of lists? 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. This usually happens when you load list stored as string to CSV. "Least Astonishment" and the Mutable Default Argument. 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). This can be used for evaluating strings containing Python values without the need to parse the values oneself. Remove empty strings from a list of strings, Generic Doubly-Linked-Lists C implementation. Every item in string to item in list in Python, Converting a Comma Separated String to a List of Strings in Python, How to append multiple strings from a single input into a list in Python, How do you explicitly convert a string to a list. If you have nested lists, it does get a bit more annoying. How do I count the occurrences of a list item? What is the python "with" statement designed for? To summarize, converting python List to String is one of the commonly used functionality.
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