If your lists can have more datatypes, or even contain lists within lists, then you will need a more complete grammar - like this one in the pyparsing examples directory, which will handle tuples, lists, ints, floats, and quoted strings. - 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. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. The junkers variable contains a compiled regexp (for speed) of all characters we don't want, using ] as a character required some backslash trickery. Split by comma and how to exclude comma from quotes in split Per comment below, this is dangerous as it simply runs whatever python is in the string. How to concatenate items in a list to a single string? Content Discovery initiative April 13 update: Related questions using a Review our technical responses for the 2023 Developer Survey. You can do this in one line for most basic use cases, including the one given in the original question. Careful though, splitting an empty string does not return what one might have expected: Hope It will solve issue but please add explanation of your code with it so user will get perfect understanding which he/she really wants. My phone's touchscreen is damaged. Embedded hyperlinks in a thesis or research paper. What does "up to" mean in "is first up to launch"? Convert Column to Comma Separated List Online comma_string="Apple,Banana,Litchi,Mango" We now want to convert comma_string to a list. How to use "in" where clause in LINQ where the string set will be supplied by a list? This is the most Javascript answer ever. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. A comma-separated string is a string that has a sequence of characters, separated by a comma, and enclosed in Python's string quotations. Why typically people don't use biases in attention mechanism? Does Python have a string 'contains' substring method? 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. Why does Acts not mention the deaths of Peter and Paul? In that case I would suggest looking at the csv module in the standard library: my_list may contain any type of variables. Ignoring Commas in Quotes When Splitting a Comma-separated String ','.join(list_of_strings) ). Counting and finding real solutions of an equation, Generate points along line, specifying the origin of point generation in QGIS. How do I make a flat list out of a list of lists? I have a string for items separated by comma. I usually end up using something like ''.join(map(lambda x: x+',',l))[:-1], but also feeling somewhat unsatisfied. String.Replace is not required here. 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. How to convert comma-delimited string to list in Python? Python - Convert String to List - AskPython Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, @IoannisFilippidis - Using a list comprehension is more efficient with. How do I replace all occurrences of a string in JavaScript? On whose turn does the fright from a terror dive end? Thanks. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. 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. rev2023.4.21.43403. python - How to convert string representation of list to a list - Stack Thank you all for your input/shortcuts. Python String to Array - How to Convert Text to a List - FreeCodecamp How to create a virtual ISO file from /dev/sr0. Find centralized, trusted content and collaborate around the technologies you use most. It isn't to everyone's taste, but I like to create helper extensions for these kinds of tasks, and put them into a "utility" namespace: Using string interpolation. wasn't aware of the eval danger when answer was posted. How to pad a comma delimited list of items with single quotes Short story about swapping bodies as a job; the person who hires the main character misuses his body. How can I split this text properly in Python? 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. A quick but not effective solution on Jupyter NB's is, highlighting your list elements and pressing the single quote on your keyboard. How would you count occurrences of a string (actually a char) within a string? Could a subterranean river or aquifer generate enough continuous momentum to power a waterwheel for the purpose of producing electricity? Convert string representation of list to list in Python. How a top-ranked engineering school reimagined CS curriculum (Ep. What is the difference between String and string in C#? Did the Golden Gate Bridge 'flatten' under the weight of 300,000 people in 1987? The manual method is simply not as powerful, and does less work, so it's not surprising that it's faster. 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. Why is it string.join(list) instead of list.join(string)? Why is it string.join(list) instead of list.join(string)? Find centralized, trusted content and collaborate around the technologies you use most. Can my creature spell be countered if I cast a split second spell after it? testsample: "['21',"foo" '6', '0', " A"]". rev2023.4.21.43403. How do I clone a list so that it doesn't change unexpectedly after assignment? How can I use format() to print out nested lists as a table? The split () method splits a string into a list, where each list item is each word that makes up the string. python - Split string on commas but ignore commas within double-quotes Thanks for contributing an answer to Stack Overflow! What were the poems other than those by Donne in the Melford Hall manuscript? List<String> to String - Join to a comma and quotes Use the int () class to convert each string to an integer. Literature about the category of finitary monads. Unwanted whitespaces in the list elements may be removed in this way: Inspired from some of the answers above that work with base Python packages I compared the performance of a few (using Python 3.7.3): I was disappointed to see what I considered the method with the worst readability was the method with the best performance there are trade-offs to consider when going with the most readable option for the type of workloads I use Python for I usually value readability over a slightly more performant option, but as usual it depends. My two cents. '*len(record_hash)), record_hash). Parabolic, suborbital and ballistic trajectories all follow elliptic paths. I'm using python to write and read files.The data was stored in comma-separated text file. Content Discovery initiative April 13 update: Related questions using a Review our technical responses for the 2023 Developer Survey. Find centralized, trusted content and collaborate around the technologies you use most. How to combine several legends in one frame? So this works: nameString = '"{}"'.format('", "'.join(nameList)) Those are single quotes enclosing the desired double quoted strings. How to output a comma delimited list in jinja python template? What does the power set mean in the construction of Von Neumann universe? 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: @gangt No problem! An example of such string "coffee", "water, hot" What I want to achieve ["coffee", "water, hot"] python Share Improve this question It is not capable of evaluating arbitrarily complex expressions, for example involving operators or indexing. Not the answer you're looking for? You can get a pretty good. Doesn't this work? Python Join List [Ultimate Guide] - Be on the Right Side of Change Then I'm using readlines () converted to list of strings. What is scrcpy OTG mode and how does it work? Why do men's bikes have high bars where you can hit your testicles while women's bikes have the bar much lower? Convert a List of String to a comma separated String in Java The comma-separated values can be in any order. Thanks for contributing an answer to Stack Overflow! Generate points along line, specifying the origin of point generation in QGIS. main.py. This question also assumes you are only working with numbers: How to convert list into string with quotes in python. 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. Not the answer you're looking for? 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 How to convert list into string with quotes in python Making statements based on opinion; back them up with references or personal experience. If total energies differ across different software, how do I decide which software to use? What is Wario dropping at the end of Super Mario Land 2 and why? Would you ever say "eat pig" instead of "eat pork"? I am not working on a particular project at the moment. The json module is a better solution whenever there is a stringified list of dictionaries. Asking for help, clarification, or responding to other answers. rev2023.4.21.43403. 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. 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. my_list = [1, baz, ctrl, 4 ]) and throws a NameError message. How to convert comma-delimited string to list in Python? How can I fill out a Python string with spaces? There are two ways to represent strings in python. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. 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. How to convert a sequence of integers into a monomial, Limiting the number of "Instance on Points" in the Viewport. 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" :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 Using the JOIN () method is the recommended method to convert the List to String. Are there any canonical examples of the Prime Directive being broken that aren't shown on screen? 257. How would you make a comma-separated string from a list of strings? Linux), you can omit the trailing '-'. my_list = [1, baz, ctrl, 4 ]) and throws a NameError message. rev2023.4.21.43403. What is the difference between String and string in C#? 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. Stepwise explanation: Find centralized, trusted content and collaborate around the technologies you use most. What is the difference between String and string in C#? Because it lacks of the spaces before and after the string? In Python 3, it was stored in the io module.. We can use the csv.writerow() function to write the list as a comma-separated row for a CSV file in the StringIO object. 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. . update: I got it to work as below, but I would prefer a cleaner way if possible. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Define a regular expression pattern that matches commas followed by any number of spaces (",\s*"). How do I split a list into equally-sized chunks? is there any particular reason for there being a. The below logic is used to convert so that list of strings such that each string is within quotes and comma separated, This logic is passed to below logic to form the SQL statement to form the where column in condition, The conn.set_trace_callback(print) prints this value which is causing to fail the fetch the record as it contains one single record, what is needed is to form the correct SQL statement to be created with proper escape for where column in (? 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. rev2023.4.21.43403. Interpreting non-statistically significant results: Do we have "no evidence" or "insufficient evidence" to reject the null? You take, the list comprehension seems to bee slower than the. 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). How is white allowed to castle 0-0-0 in this position? Short story about swapping bodies as a job; the person who hires the main character misuses his body. Beginner kit improvement advice - which lens should I consider? If you're merely trying to educate about other features of the language when there is already a viable answers, you're doing the same thing you downvoted me for. Python pandas convert list of comma separated values to dataframe Dataframe: Cell Level: Convert Comma Separated String to List Pandas - check for string matches in different columns with column values being comma separated Python/Pandas merge and generate list of unique values from comma separated variable/column How about saving the world? And if you're really looking to enclose the whole thing in single quotes: This may be easier than using string.replace. "Signpost" puzzle from Tatham's collection. How do I parse a string representing a nested list into an actual list? /,[]) and create new elements, How to remove special character in a list of string and split it into separate elements. How a top-ranked engineering school reimagined CS curriculum (Ep. What were the most popular text editors for MS-DOS in the 1980s? But the code was getting very kludgy. This example is compatible with Python 3, as the other answer here used StringIO which is Python 2. Effect of a "bad grade" in grad school applications. From the docs: str.join (iterable) Obviously it gets more complicated if you need to quote/escape commas etc in the values. rev2023.4.21.43403. 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. How can I convert a comma-separated string to an array? To tackle the problem of the comma separation we can split each string in the list. Looking for job perks? Python program to input a comma separated string - GeeksForGeeks Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. From the docs: Return a string which is the concatenation of the strings in the iterable iterable. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. :) You are right. How to convert list lookalike into a list? Find centralized, trusted content and collaborate around the technologies you use most. A quick but not effective solution on Jupyter NB's is, highlighting your list elements and pressing the single quote on your keyboard. Use the StringIO Module to Convert a List to a Comma-Separated String in Python. How about saving the world? 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. What does the power set mean in the construction of Von Neumann universe? But if you want to show off with logic :) : Unless I'm missing something, ','.join(foo) should do what you're asking for. 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! Did the drapes in old theatres actually say "ASBESTOS" on them? Just some data with apostrophe is all I wanted. What are the advantages of running a power tool on 240 V vs 120 V? My requirement, bringing me here, was to fill an SQL "WHERE x NOT IN ()" clause. Making statements based on opinion; back them up with references or personal experience. Just sayin' You are usually better off using the tools in the library for csv. This solution doesn't produce the expected output. Has depleted uranium been considered for radiation shielding in crewed spacecraft beyond LEO? Asking for help, clarification, or responding to other answers. Example: str_inp = "Hello,from,AskPython' To convert these types of strings to a list of elements, we have some other ways of performing the task. it is also a duplicate answer. What does "up to" mean in "is first up to launch"? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. How do I make the first letter of a string uppercase in JavaScript? Generate points along line, specifying the origin of point generation in QGIS, Futuristic/dystopian short story about a man living in a hive society trying to meet his dying mother, Embedded hyperlinks in a thesis or research paper. Could you please tell me what why did you say The, this would still preserve the spaces inside the quotes. rev2023.4.21.43403. Checks and balances in a 3 branch market economy. 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).
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