Concatenate strings python stack overflow. May 22, 2013 · In Python 2.

Concatenate strings python stack overflow a for obj in l)" Python 2. Jan 24, 2024 · To concatenate string values from a single column across rows within each group in a Polars DataFrame in Python, you can use the agg function with pl. How can I ignore values containing null? I tried to handle this by replacing nan values but that does not help. string->list and list->string in scheme. 30. for example: list1 = ['A','B','C'] list2 = ['D', 'E'] I want to obtain list3 = ['AD', 'AE', 'BD', 'BE Nov 13, 2010 · Standard string formatting is universal, a mechanism that all programmers understand immediately and intuitively. Jan 29, 2015 · Issue with your code is, you did not put proper break condition, rather your just returned after reading first input item. If you failed to remove the newline character, it would print the Oct 27, 2020 · Stack Overflow for Teams Where developers & technologists share private knowledge with I'm trying to run a command in Python by concatenating two strings, each Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Python string concatenation. I tried all concatenation, but those two strings just don't concatenate one after another, instead, shorter strings B(length = s) substitute the first s units of longer string A. You can achieve that by calling apply on multiple columns. You can use join and a generator to improve efficiency. There are already many ways to define multi-line strings, some very explicit. Nov 24, 2024 · String literal concatenation is a feature in Python where two or more string literals placed next to each other are automatically concatenated into a single string. So I want to read a file, and write the dat Mar 26, 2020 · Is there a way to concatenate these two formatted strings horizontally? I tried a + b but am having a vertically concatenated strings. 9, for Linux x64, the += actually wins (barely), even with 10,000 repetitions causing it to grow to a multi-KB string; the CPython optimization for string concatenation means most of the concatenations just expand the used allocation without copying, making it actually cost less overall for concatenating with reassignment than Mar 30, 2020 · I am running Python3, there may have been confusion about that because I said "print statement" I just didn't know what else to call it. As a separate matter I had tried using individual series as you do here, but, as you say, the name of the individual series is not visible and so I cannot use it. a = ''' Apr 13, 2018 · XPath has nothing to do with your problem—you just need to know how to concatenation two strings to get a new string; the fact that you’re using the result as an XPath path is irrelevant—and it makes it hard for you to search for docs or existing questions, and scares away people who could answer your question but think they can’t because they don’t know XPath. That means that every concatenation of a string results in a new string object being created and two (the source objects) being thrown away. Feb 3, 2021 · So, I'm new to Python and I have this dataframe with company names, country information and activities description. Dec 3, 2024 · Python is also such a language that supports various string concatenation methods. " ) because python will concatenate consecutive strings in one expression together automatically (see String literal concatenation). For example: Jul 16, 2017 · The f2 code is still bound by string concatenation due to. I am using selenium import webdriver. 6 onward I would use f-strings, no need to worry about line continuation or positional interpolation like the %s placehholders. groupby() function to combine elements; zip will let you group two input lists into two output lists:. Also, " ". csv file from an Excel spreadsheet and convert it to a format suitable for a LaTeX table. join is probably fast enough and efficient. queue) # first unicode result output2 = unicodeQueue(self. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company ''. Here is my code so far: Dec 6, 2012 · Or don't use a list at all and just use string concatenation, as Hemesh said. The code below will add multiple string i in the variable s. Python automatically concatenated it with the string in the next line, into 'orgedu'. When you know the number of strings to concatenate and don't need more than maybe 2-4 concatenations I'd go for it. . isfile(schoolFile) testQuery = f""" select fish, {" room," if is_school_file else ""} period_01, period_02 from over_cs_doe as d {"left join schools as s ON s. text = text def Feb 3, 2012 · LiveProcess is expecting an argv-style list of arguments. Field B Field A 0 1/a. I have two strings (a and b) that could be null or not. Where you want to make one argument, you need to provide one string. Feb 2, 2018 · I was wondering why you cant concatenate strings to a variable assigned as None in python. So use concatenation to make the string: c. str(ts) + '\t' + str(v) + '\r\n' The fact it is worse than the original version, also based on string concat, is likely due to the implementation detail mentioned in another question. 0. But in Python, how will the join method do this for multiway merge? A similar question is How python implements concatenation?, it explains += for two way merge. This means '\n' 'a' * 7 is the same as ('\n' 'a') * 7, so the string you're repeating is '\na'. itemgetter(0)): # key is the grouped key, items an iterable of key, data pairs newkey. join(sequence) return output Jul 23, 2011 · When you do string concatenation by putting the string literals next to each other, and multiplication, the special string concatenation comes first. shape[0]): concat = "" for y in range(len(columns)): concat += str(mat[x][2 + y]) where mat is a 2d array containing strings or ints in each cell, columns is a list of column names for mat, e. I have a list of string, say: mylist =['boring', 'enjoyable', 'great'] and a string, say: s = 'Python is ' and I want to build the list: ['Python is boring', 'Python is enjoyable', 'Python is great'] I am trying to concatenate strings based on the similar values in them (on different indices). I tried with 2 different strings of 1 and 0 and when I concatenate them I get 10. It looks like you're using a web framework or something of the sort, so really don't do it! Jun 1, 2018 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Apr 22, 2020 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. 6, I need to create a string by concatenating INTRANET\ and a userid such as jDoe to obtain a string INTRANET\jDoe. join(" ", a). preScraWord = input("\n\n\nPlease enter your word: ") Dec 18, 2008 · In Python, the where and when of using string concatenation versus string substitution eludes me. decode('ascii')-- if that works then you know that multiple encodings were the problem. You need to change all of the places you concatenate strings with ints. index, and to turn that into a numpy array you add the . I want to concatenate all the items in a list. W3Schools offers free online tutorials, references and exercises in all the major languages of the web. It's easier to visualize what the final string will look like, without doing "mental concatenation". , . pdf a 1 2/b. If you wrote foo(1, <newline> -1) then you'd have in effect the same lack of ability of the language to tell when you leave off the trailing comma. join and format strings. Is there a way to only Jan 4, 2022 · Basically the f-string is just converting the binary representation of the the character to a string but the conversion adds spaces to the unused places (since the string has to be 8 in size as declared by us in the f-string), so to remove the extra spaces . Apr 6, 2020 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand May 12, 2022 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & Python Concatenating Strings. Jun 30, 2015 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Jan 6, 2016 · Python uses + to concatenate strings because that's how core developers of Python defined that operator. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Jan 26, 2019 · The syntax highlighting in the question should help you out. pdf c 3 4/c. then searching in lists. sorry this is the code i was doing. ' You need [my_string]*3 instead of my_string*3 because you want a list containing the string three times (that can then be joined) instead of having a single big string containing the message three times. here is a screen shot of the formatted strings. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Python 3 Concat Single Byte with String Bytes. But while you are removing the double quotes, its treating the variable character_age as float. 3. gets input from the user. Like this (a, b and c are strings): something = a + b + (c if &lt;condition&gt;) But Python does not Oct 15, 2015 · Hello enthusiast programmers, It seems I am very bad at manipulating lists in Python (I come from the IDL world, and I really struggle with Python). To learn more, see our tips on writing great Nov 3, 2021 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Apr 12, 2019 · You missed a +. str(i) is the str type of the variable i, that is used to iterate over your for loop. The concat function only works on two sequences of the same type, i. Code: a = 0 b = 0 b = int(str(a)+str(b)) print(b) Output: 0. Sep 24, 2016 · Concatenation of strings have the disadvantage of needing to create a new string and allocate new memory for every concatenation! This is time consuming, but isn't that big of a deal with few and small strings. ndindex(mat. binary_data will be a str, concatenation should work perfectly fine unless your other string is unicode, in which case you probably should encode that (nearly no networking function requires unicode in Python 2): normal_str = unicode_str. However none of them have much of a consolidated approach to learning, where one skill builds on another. This is my code: output1 = unicodeQueue(self. i understand its used as a logical test, but how would you keep a variable empty before you decide it should be a string, integer. append(' '. Nov 30, 2017 · I am trying to concatenate two strings, the problem i'm running into is that when I concatenate, the text goes to the next line. Apr 25, 2014 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Nov 11, 2022 · I am doing automation in python for jira with the addition of jql search inside the service As a result: two JQL queries, one to search for &quot;closed tickets&quot; and the second to search for & Sep 17, 2013 · String concatenation is a particularly easy mistake to make since it's pretty common to introduce linebreaks into comma-separated lists of strings. Right I am a complete beginner here, trying to work through various python tutorials and a lot of them are great. groupby(zip(key, data), key=operator. execute("SELECT * FROM mytable WHERE time=%s",(mytime)) Then, I want to add a limit %s to it. Mar 26, 2021 · As noted in the comments section above, you can simply use Python's built-in string function, i. In your code you use this operator for string and int. Mar 12, 2020 · I want to groupby the ID column and string-concatenate all the other fields, comma-separated, so I get output like so: ID CODE GROUP PIN 1 99,89 A,B 221,443 2 79,69 A,A 230,000 3 59,49 D,T 781,665 I can groupby the ID and return the CODE field concatenated but I need to do that for more than just one field: Dec 6, 2012 · Or don't use a list at all and just use string concatenation, as Hemesh said. 7. The problem is that ''. So for example I would like to turn 'abc' into ['a','b','c'] and vice versa using a built in function. for each in lis: if each != None: each = strip_tags(each) st+=" "+each. strip() was used. Provide details and share your research! But avoid …. As the string concatenation has seen large boosts in performance, is this (becoming more) a stylistic decision rather than a practical one? For a concrete example, how should one handle construction of flexible URIs: Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Concatenation in Python, concatenating lists and strings. Mar 25, 2020 · I'm trying to concatenate multiple string columns containing null values. path. Provide details and share your research! But avoid … Asking for help, clarification, or responding to other answers. Memory allocation is expensive enough to make this matter a lot. Jan 6, 2016 · This could easily become an opinion-based thread, but I find formatting to be more readable in most cases, and more maintainable. groupby('id'). Apr 23, 2020 · At the time of asking this question, I'm using Python 3. But when I concatenate 0 and 0 I get another 0. 5 2. encode(encoding) Sep 18, 2015 · foo = ( "this text will be " "joined into one long string. Also, please don't name your list "list". join([my_string]*3) 'I am good. Since strings in Python are immutable, every concatenation requires copying the entire result up to that point for each line. fish=d Feb 24, 2015 · This prints the list correctly, but it prints it 7 times. join(sequence) return output Dec 15, 2021 · I guess you want to check if values in one column end with another. My code is: randomNum = "" tr Mar 30, 2022 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. And I want concatenate them separated by a hyphen only if both are not null: a - b Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Python: concatenate string inside list. if not i in distinct_list: here are lprofile lines for string search in OP code Line # Hits Time Per Hit % Time Line Contents 17 75000 80366013 1071. values, and to convert that into a string (to easily add to the previous columns, which are strings), you can use a map function. I need to print my list only 2 times. Jan 1, 2011 · A response from the author of the API, I'm honored. (this current comment is just to confirm the @tonfa's comment above). Asking for help, clarification, or responding to other answers. bufferQueue) # second unicode result sequence = [output1, output2] print sequence output = ''. 7 if not str(i) in distinct_string: 18 50000 2473212 49. Aug 21, 2020 · random. This will string will be a part of a SQL query. Jan 9, 2013 · But, python strings has the built in method . For example: is_school_file = os. The question doesn't involve the series title, but rather the chart title. 7, Hatem Nassrat has tested (July 2013) three concatenation techniques where + is faster when concatenating less than 15 strings but he recommends the other techniques: joinand %. agg(lambda x: ''. join(t) That's the "pythonic way", you also should avoid using the + operator with strings, always use . While it's true that __add__ special method is normally used to implement the + operator, + (BINARY_ADD bytecode instruction) does not call str. Ask Question Asked 7 years, 10 Jul 5, 2018 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Python Pandas - Concatenating strings between columns. A \' does not terminate the string -- it is an escaped single tick '. This means that EVERY possible pair of words must be checked for a common substring, which may require an enormous amount of memory if your list of strings is large. But result does not show concatenated string rather just first column. decode('ascii') + 'literal_string'. To learn more, see our tips on writing great Dec 17, 2017 · I am using Tkinter lib for Python gui, and I'd like to display text from excel sheet using a loop, and a label inside a frame, however, since StringVar has only set function, I can not insert new values, or concatenate the string Apr 7, 2018 · I have a matrix with strings as follows, array([['', '', 'C'], ['A', '', 'C'], ['', 'B', '']], dtype='|S9') I need to concatenate columns in each row to get an output Feb 12, 2021 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. This became a bug very hard to identify. Namespace(a=str(i May 9, 2020 · I need to concatenate 2 different lists of strings in python. Update. On CPython 3. ADDED: Jan 11, 2013 · Use the itertools. join(), to concatenate multiple string parameters separated by a delimiter (in this case, that is -). It's a reserved keyword in python (I sometimes fall into this trap myself, but it's a really bad idea). __add__ because + treats strings specially in both Python 2 and Python 3. 1. 12 10 loops, best of 3: 87. Making statements based on opinion; back them up with references or personal experience. Aug 31, 2010 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company . Basically you access the df index with df. For example, if f is 123, x will be 123msamdam. Namespace(a=str(i)) for i in range(1000000)]" \ "''. Aug 15, 2012 · I'm new to python and this is just to automate something on my PC. " "Note that I don't need to concatenate these " "explictly. Aug 20, 2015 · For each group, apply set to find the unique strings, and ''. join(obj. Nov 24, 2020 · Interestingly, I can't reproduce your timings. anyway, in python3 i can concatenate strings and variables with a comma, I normally use + but when I tried it in this situation it was trying to add the variable (an integer) to the string, and giving me an Dec 27, 2016 · In python string is a sequence. Here are two possible ways to do this. g. While it can be useful for splitting long strings across multiple lines, it can also lead to subtle bugs if commas are accidentally omitted in lists of strings, resulting in Sep 3, 2015 · The function is slow because you are repeatedly doing of string concatenation with new_buffer = new_buffer + line_wo_comments. 11. append(key) newdata. They all seem to show you things in silo. col to specify the column . You must also make the 1915 you are searching for in the 'obs' variable a string because 'obs' is a string not an integer. First, I did something like this: ''. join(set(x))) Out[34]: category category2 id a z 1 b yxz 2 c y 12 To move id from the index to a column of the resultant DataFrame, call reset_index: Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Nov 26, 2021 · The goal is to concat the strings until an occurence of a string that starts with a digit is found, then isolating this digit string into its own variable and then isolating the remaining strings into a third variable. Jun 8, 2018 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. I think the list is printing 7 times because there are 7 strings in the list. This solution is for a list of strings in arbitrary order. I want to do this: Feb 10, 2015 · Doing string concatenation in a for loop will create problems as a new string object will need to be created for each concatenation (twice for each iteration of the loop in your case). To learn more, see our tips on writing great Apr 11, 2017 · String concatenation works automatically in python so there is no need for the + in your first example. I'm creating fixed number (5) of NEW columns &amp; want every column to have string concatenated by non-em Dec 3, 2015 · For Python 3. Here is the line profiling results. But have you ever wondered which one is the most efficient? If your answer is "YES" then the following post will be helpful to you because in this post we will discuss the most efficient way to Concatenate Strings in Python language. So the output should look like: id v1 v2 1 a b,d 2 c,d,f e,g I have done concatenation part, but I am not sure how to skip the duplicated values. executable] + ['-INFILE='+c_data, '-OUTPUT=OUT'] Jul 19, 2023 · 'i' is literally the string 'i'. join((test_1,test_2)) You can measure different methods using the timeit module. import itertools import operator newkey, newdata = [], [] for key, items in itertools. May 22, 2013 · In Python 2. Dec 29, 2016 · I want to concat few strings together, and add the last one only if a boolean condition is True. Nov 17, 2017 · I need to concatenate strings in the list and add the integers to a sum; of course, I intend to change it to other data types later - thanks so much for all your kind responses l = ['magical unico Jul 5, 2018 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Aug 7, 2015 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Feb 16, 2012 · How to concatenate Object with a string (primitive) without overloading and explicit type cast (str())? class Foo: def __init__(self, text): self. join(a) is shorthand for str. No newlines are included\n" "unless you insert them explicitly. This is because Python Strings (and tuples) are not mutable objects, so, when you're doing "abc" + "cde" Dec 11, 2019 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; python: concatenating strings of a list within a list. 2 msec per loop python --version && python -m timeit -s \ "import argparse; l = [argparse. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company In Java, stringbuilder would create a new string and put the two strings on the both sides of plus together, so it will cost O(n^2). Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; This is how Python's string concatenation works: Sep 18, 2015 · Just pass empty string to end parameter in print function after strippping off the newline character. astype(str) to columns A and B, to convert them to strings. When I say efficient, I'm only referring to the speed at which the strings are concatenated, or in more technical terms: I'm asking about the time complexity, not accounting the space complexity. >>> sep = 0x1 >>> sepc = chr(sep) >>> sepc '\x01' Sep 25, 2014 · I have a problem with concatenating strings in Python. May 4, 2018 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Aug 21, 2017 · I want to concatenate a string from a 2d numpy array like this, for x in np. Jun 27, 2021 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Create a dictionary mapping the first 5 characters of each string to its tail. To learn more, see our tips on writing great Mar 12, 2013 · Understand "better" as a quicker, elegant and readable. join, so, if your list grows, you can handle it like this: '. strings = {s[:5]: s[5:] for s in x} and a set of all the suffixes: suffixes = set(s[-5:] for s in x) Now find the string whose prefix does not match any suffix: prefix = next(p for p in strings if p not in suffixes) Now we can follow the chain of strings: May 22, 2020 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Python 3 Concat Single Byte with String Bytes. join(d for k, d in items)) First, exec is even more dangerous than eval(), so be absolutely sure that your input is coming from a trusted source. That way, you won't get the apostrophes that you get in the string representation of a list. 5 92. join(list) won't work as it isn't a list of strings. Here's the code Oct 3, 2015 · searching in strings: if not str(i) in distinct_string: is much faster. I have tried this a number of ways but end up getting INTRANET\\jDoe and hence my query does not return any results. You can access things in the list like so: special_char[0] instead of converting the list to a string and messing about with the string. To learn more, see our tips on writing great Decode all strings to ascii before concatenating: str1. " >>> " ". 4 but about version 2. Mar 31, 2010 · Currently, I"m doing this, but I want to split it into 2 strings (so I can do them separately) cursor. '. Sep 13, 2020 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Python Pandas concatenate a Series of strings into one string. You can make it work by doing so: x = str(f) + s This will convert f to a string and then concatenate with s. That can tell you which is fastest . Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. Python's string formatting is Python-specific, used by nothing else; a whole lot of people don't understand it immediately and have to look up its documentation frequently. Even though there’re multiple ways to concatenate strings in Python, it’s recommended to use the join() method, the + operator, and f-strings to concatenate strings. If you change the inner concatenations to also use join you would get better performance. At the moment, the snippet works fine for a maximum of three words in consecutive order, but breaks fo May 20, 2021 · So in the above line the plus(+) sign means to concatenate the different string values and show in as s new string without making any changes to the variable. – Nikhil Shinday Commented Jul 14, 2015 at 14:37 Mar 8, 2019 · My question is how does python achieve linear time in string concatenation without breaking other language components like immutable object assignment? and how does that extra line affect the performance that much? I searched a bit in the cpython implementation but couldn't find exact location. You also need to make the integer that you are trying to concatenate (concept) a string because you cannot concatenate integers with strings. e. Oct 12, 2021 · I was creating a long list of strings like this: tlds = [ 'com', 'net', 'org' 'edu', 'gov', ] I missed a comma after 'org'. You can do: >>> "foo" "bar" 'foobar' But if you want a space between foo and bar, either needs to be added to the end of one string or the beginning of the next. Sep 25, 2010 · is read into string buffer array with readlines() function to produce ["Blah, Blah, and Blah, Blah, Blah, Blah, Blah", "A, B, C Blah, Blah, Blah, Blah, Blah"] I thought about having loop to check '-' to concatenate all the stored strings before it, but I expect Python has efficient way to do this. decode('utf-8') Dec 15, 2015 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company I have a Pandas df as defined below: ID Start End 0 77 2018-07-02 2020-07-02 1 88 2019-07-02 2021-07-02 2 99 2020-07-02 2022-07-02 Feb 8, 2014 · Strings are immutable objects in Python, so you cannot modify existing strings. I am good. I'm trying to group all this information by names, concatenating the countries and activities strings. The performance would be roughly O(n 2), where n is the length of the text. Sep 17, 2013 · String concatenation is a particularly easy mistake to make since it's pretty common to introduce linebreaks into comma-separated lists of strings. cmd = [c. def addWords(): resultant = '' delimiter = ' ' while True: user_input = raw_input('I will echo your input until you enter return only:') # use raw_input() for python2 if not user_input: break resultant += delimiter + user_input return resultant addWords() Jul 1, 2011 · >>> my_string = "I am good. I would like the output to be 00 Feb 10, 2013 · I am trying to write a script in Python 2. Even then, you shouldn't do it. Jun 18, 2009 · The chr() function will have the effect of translating a variable into a string with the binary value you are looking for. See full list on geeksforgeeks. join to concatenate the strings: In [34]: df. Jun 15, 2017 · The performance difference between generator expression and list comprehension is easy to measure: python --version && python -m timeit -s \ "import argparse; l = [argparse. 8. pdf b 2 3/b. choices gives you a list. pdf d Aug 26, 2022 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Concatenate string data in Pandas Python. The OP asked for Python 2. Provided that df is:. Nov 10, 2016 · You can create customized columns in the apply function after groupby as follows where g can be considered a sub data frame with a single value in the test column, and since you want multiple columns returned, you need to create a Series object for each group where the indices are the corresponding headers in the result: Mar 12, 2020 · I want to groupby the ID column and string-concatenate all the other fields, comma-separated, so I get output like so: ID CODE GROUP PIN 1 99,89 A,B 221,443 2 79,69 A,A 230,000 3 59,49 D,T 781,665 I can groupby the ID and return the CODE field concatenated but I need to do that for more than just one field: Feb 2, 2021 · I need to concatenate v1 and v2 using comma in each id group, however, if a value already exists in the group, do not concatenate it. This is an example of how timeit can be used:- Nov 5, 2012 · I have two unicode string '가' and 'ㄱ' and I want to concatenate them to get "가ㄱ". 9 distinct_string += str(i) + " " and for list search in OP code 39 75000 769795432 Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company May 18, 2021 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Aug 30, 2017 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Python: concatenate string inside list. Apr 14, 2015 · Now, there are two scenarios, depending on your Python version: Python 2 - unicode and str. 15. How can I do that without messing up the %s in mytime? Edit: I want to concat query2, which has "LIMIT %s, %s" Mar 21, 2016 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Feb 13, 2018 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Python Concatenating Strings. This is an example of how timeit can be used:- Dec 4, 2013 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Concatenate strings in Python? 0. You cannot concatenate numbers and strings. 3 that can take a . As this old answer shows, it is actually impossible to end a raw string with a backslash. You could make all the ints into strings. So when you know you need to concatenate multiple strings Sep 11, 2018 · I trying to concatenate strings by decremented columns and assuming the table is as below. Edit: added . org Python String Concatenation Code language: JavaScript (javascript) Which method should you use to concatenate strings. To learn more, see our tips on writing great Nov 5, 2012 · I have two unicode string '가' and 'ㄱ' and I want to concatenate them to get "가ㄱ". print (line, end = "") print by default print the content in a new line for each iteration but by passing empty string to the end parameter, this default behaviour won't work. '-'. This is my script: import sys import Jul 22, 2021 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Sep 26, 2021 · WARNING. All I am trying to do is concatenate a string with an integer that is held in an array. 28. 2. I read some data from input file, and store third line whose content is "00001M035NNYY1111111" into a variable called applicant: Jul 17, 2011 · I was wondering if python had a built in function similar to . I need to concatenate the string clave and cadena_aleatoria(x) while cadena_inicio is smaller than 256. Jun 20, 2014 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Apr 16, 2022 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Dec 2, 2015 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Mar 9, 2018 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company May 5, 2022 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Jun 21, 2017 · f is an integer and s is a string. two strings or two arrays. Sep 5, 2021 · I created two variables in my Python and they both have the string 0. xcnxl sntaoo wnyvn gol kqh gtkc mcdce loxbg qmxhhn xrdir