Python3 var = ("Geeks", "for", "Geeks") print(var) Output: ('Geeks', 'for', 'Geeks') Create Tuple With One Item Python 3.11 provides us with another way to create a tuple. This is called list comprehension, and when you do list(x) where x is an iterable (which also includes tuples) it converts it into a list of same elements. The result is a list of numbers obtained by adding each pair of elements from the two input lists. How do I make a flat list out of a list of lists? Connect and share knowledge within a single location that is structured and easy to search. These are methods are shown below. Alternatively, you can also use a list comprehension to create list with elements from the tuple. We then use a lambda function within the map() function to apply both functions to each element of the numbers list. Tuple To Array Conversion In Python - A Complete Guide By Piyush Bhujbal / October 31, 2021 In this article, we'll learn how to convert a tuple to array in Python. Still confused. Making statements based on opinion; back them up with references or personal experience. Why don't you try converting its type from a tuple to a list and vice versa. The following is the syntax. Below are methods to convert list of tuples into list. each time the iterator is "evaluated" it is "advanced" to the next element. https://docs.python.org/2/library/functions.html, MosaicML: Deep learning models for sale, all shapes and sizes (Ep. Its the best way of approaching the task of improving your Python skillseven if you are a complete beginner. The combination of these key-value pairs is represented in the form of tuples, known as dictionary items . They are as follows: Create Tuples using Round Brackets () To create a tuple we will use () operators. When a character is passed to the strip () function, it is removed from both ends of the string. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, This works on python interpreter, but not in the script wierd. Example: Let's take an example and check how to convert the list of tuples to a string in Python. If you do have a lot of tuples, use list comprehension or chain.from_iterable to prevent the quadratic behavior of sum. is this widely accepted? A simple [list(tuple) for tuple in tupleOfTuples] just gives you a list of lists, instead of individual elements. Python Program #initialize tuple aTuple = (True, 28, 'Tiger') #tuple to list aList = list (aTuple) #print list print (type (aList)) print (aList) Try Online Output <class 'list'> [True, 28, 'Tiger'] Create and fill the VTK data object with your data. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Python: How to convert a list to a list of tuples? The simplest, most straightforward, and most readable way to convert a tuple to a list is Python's built-in list (iterable) function. The whole premise of functional programming and all that largely builds on persistence of data. n-length groups using zip(*[iter(s)]*n). The list comprehension encloses this tuple in square brackets to create a list of tuples and returns the list as the output of the comprehension. If you just want to learn about the freelancing opportunity, feel free to watch my free webinar How to Build Your High-Income Skill Python and learn how I grew my coding business online and how you can, toofrom the comfort of your own home. How to convert a list to a list of tuples? Does anyone know which story of One Thousand and One Nights the following artwork from Lon Carr illustrates? Or should I just stick to the loop? It's so obvious now! You can convert the iterator into a list, tuple, or any other iterable object. Why does Ash say "I choose you" instead of "I chose you" or "I'll choose you"? The list() function is the easiest way to convert a tuple into a list. Also, check the following python tutorials. Thanks! # import numpy library import numpy as np # create a tuple using numpy t = tuple (np.array ( ['USA', 'United Kingdom', 'Canada'])) # convert the tuple to a list l = list (t) # Print the list print (l) This is possible of course only if all your inner lists are of the same size (which is true in your example, so I just assume this). What can I do if my coauthor takes a long-time/unreliable to finalize/submit a paper? Does a Wildfire Druid actually enter the unconscious condition when using Blazing Revival. There are more than 10 ways to convert the given tuple to a list in Python. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. What are the Star Trek episodes where the Captain lowers their shields as sign of trust? Method-1: Convert Python tuple to list using the built-in function list () This method uses the built-in list function, which takes an iterable as an argument and returns a list. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Inputting a file of mixed data types and converting numbers into ints using Python. Last Updated On March 24, 2023 by Krunal. We then use the list() function to convert the tuple to a list and assign the result to a new variable called my_list. Method 3: Using the itertools.chain () function. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. To become more successful in coding, solve more real problems for real people. NumPy's main object is the homogeneous multidimensional array. How can you add tuples together in an internal loop? Is there any resource you can recommend with a step-by-step explanation of it? You also have the option to opt-out of these cookies. Quick Examples of Convert Tuple to List I like using 'reduce' in this situation (this is what reduce made for!). How to Convert Python Tuple to List Now, let's see the various Python methods to convert tuples to lists. Not the answer you're looking for? A lambda function is an anonymous function that you can define on-the-fly without explicitly giving it a name. How do I split a list into equally-sized chunks? With matching list of tuples, the basic array function produces: In [93]: arr = np.array(A, dtype=types) . Example One item tuple, remember the comma: thistuple = ("apple",) If youre short on time, heres my quick take on how to convert a Python tuple to a Python list? This method uses the sum function to concatenate the elements of the tuple into a single list. It then creates a list lst using the list function and passing the tuple to the iter function. Does the policy change for AI-generated content affect users who (want to) How to convert a tuple of tuples to a list of lists? Where iterable is any iterable Python object. From the docs I linked, it looks like Py_BuildValue might return a tuple. Measure Theory - Why doesn't empty interior imply zero measure? Convert into a list: Just like the workaround for changing a tuple, you can convert it into a list, add your item(s), and convert it back into a tuple. Making statements based on opinion; back them up with references or personal experience. 1. @Jimmy that's because list is a debugger command, run. Code: The following code converts the three given tuples into lists. Typecasting to tuple can be done by simply using tuple (list_name). How do I concatenate two lists in Python? Is there a word that's the relational opposite of "Childless"? It is a table of elements (usually numbers), all of the same type, indexed by a tuple of positive integers. Time Complexity: O(n), where n is the length of the listAuxiliary Space: O(n) additional space of size n is created where n is the number of elements in the list. @froadie: it's an idiomatic way of flattening a shallow list. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. Converting a list to a tuple in Python can be done using the built-in tuple() function. The function takes a tuple as an argument and returns a list. While working as a researcher in distributed systems, Dr. Christian Mayer found his love for teaching computer science students. The following is the syntax. This method uses the reduce function from the functools module to iteratively apply a binary function to the elements of the tuple, and build a new list from the results. Method 1: list () Solution: Use the built-in Python list () function to convert a list into a tuple. Does anyone know which story of One Thousand and One Nights the following artwork from Lon Carr illustrates? Since tuples are immutable, they do not have a built-in append() method, but there are other ways to add items to a tuple. Just use sum if you don't have a lot of tuples. python - How do I convert a tuple of tuples to a one-dimensional list using list comprehension? = (1,2,4,"Geek") print(values) Unpack List inside parenthesis. Thank you for your valuable feedback! The expression [*t] is the most concise one-liner to convert a tuple t to a list! We will go through some examples, where we demonstrate how to convert tuple to list in Python. 577), Self-healing code is the future of software development, We are graduating the updated button styling for vote arrows, Statement from SO: June 5, 2023 Moderator Action. So you will need to expose the PyObject to Python using a py::class. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Assistant Professor, Center for Information Technologies and Applied Mathematics, School of Engineering and Management, University of Nova Gorica, Slovenia, squared_numbers = list(squared_numbers) # Convert the iterator to a list. The map() function is a powerful tool for applying functions to each element of an iterable, providing a concise and efficient way to process collections of data. The enumerate function returns an iterable that produces pairs of indices and elements from the input iterable. The code then creates a list lst using a list comprehension that loops through each element in the tuple t, and for each element, it creates a list [x] and assigns the value of the current element to x. It provides a convenient way to perform operations on all elements of a collection without the need for explicit loops. You build high-value coding skills by working on practical coding projects! Measure Theory - Why doesn't empty interior imply zero measure? I was able to accomplish it with a for-each loop: But I feel like there must be a way to do this with a list comprehension. Can you create a list of variables in Python without instantiating the variables? How do I make a flat list out of a list of lists? You can also apply multiple functions to each element of an iterable using the map() function. Syntax: His hobbies include watching cricket, reading, and working on side projects. - Daryl Spitzer Jun 18, 2009 at 18:43 if you have a tuple just iterate until you have the elements there are necessary and after that append to a list. List directly into a dictionary using zip to pair consecutive even and odd elements: or, since you are familiar with the tuple -> dict direction: The below code will take care of both even and odd sized list : Thanks for contributing an answer to Stack Overflow! Is it possible to open and close ROSAs several times? The result is a list of squared values of the even numbers. Skeleton for a command-line program that takes files in C, Upper bound for Hall's conjecture on separation of squares and cubes. You can learn more about the append() method in my detailed guide and the accompanying video: To convert a tuple to a list, you can use the unpacking asterisk operator * from Python version 3.5 onwards. How to convert it to a list with the same n elements? A good solution if you want to edit an item while iterating! Python is a great programming language. And you could be even faster if you used a bitfield instead of a list: But that's working only if your fields just contain 0 or 1 of course. Python - search txt.file for ID, then return variable from line below, Get values for matching keys in dictionaries, Python turning a list into a list of tuples. I don't want to flatten it, unlike these questions, and I don't want to make it a numpy array like in this question. rev2023.6.8.43485. The above code defines a tuple t containing four elements. The elements of the tuple are then converted to a list using map() function along with eval(). Piyush is a data professional passionate about using data to understand things better and make informed decisions. It is mandatory to procure user consent prior to running these cookies on your website. The lambda function takes a single argument and returns a list with that argument as its only element. Join the Finxter Academy and unlock access to premium courses to certify your skills in exponential technologies and programming. There are the following methods to convert a tuple to a list in Python. Does touch ups painting (adding paint on a previously painted wall with the exact same paint) create noticeable marks between old and new? A Python tuple can be created in the following ways: Create an empty tuple with an empty pair of parentheses: example_tuple = () Create a tuple with multiple values that are separated with commas: example_tuple = (1, 2, 3) You can exclude the parentheses when creating a tuple with multiple values: example_tuple = 1, 2, 3 I know that we can convert a list of tuples to a dictionary. This category only includes cookies that ensures basic functionalities and security features of the website. Whereas, the process of converting a JSON string to a native Python object is called deserialization. How to Build Your High-Income Skill Python, 26 Insane Auto-GPT and Baby AGI Alternatives You Ought to Try in 2023, Smol-Developer: Your Cute AI-Based Junior Developer , How I Cracked the Top 100 in the Kaggle House Prices Competition, Build Your First ETH Dashboard App with Python Dash, How I Created a Blog Application Using Django Part 3, How I Created a Sketch-and-Cartoon-Making App Using Flask, How I Built a Weather App with Python Streamlit, How Exactly Does Ledger Generate the 24 Random Words? @GrijeshChauhan I am using python2.7, so I use xrange. Zip is pairing two things, taken from the same iterator here. Does the policy change for AI-generated content affect users who (want to) How do I convert tuple of tuples to list in one line (pythonic)? This code takes a tuple t of strings and converts it into a list lst. Asking for help, clarification, or responding to other answers. I wondered how it looks for longer lists, ie. http://rightfootin.blogspot.com/2006/09/more-on-python-flatten.html, MosaicML: Deep learning models for sale, all shapes and sizes (Ep. For example, you can filter out specific elements from an iterable before applying a function to the remaining elements. Problem: Given a Python tuple with n elements. When should I use the different types of why and because in German? To convert the list into a string, we are going to use the str () function. You have a tuple of tuples. Are there military arguments why Russia would blow up the Kakhovka dam? In this tutorial, we will look at how to convert a tuple to a list in Python with the help of some examples. There are many ways to do that. Syntax: string.strip (character) Note: It is an optional parameter. You can join his free email academy here. Python3 The above code defines a tuple t consisting of 4 elements. We then apply this function to corresponding elements of numbers1 and numbers2 using map(). The cleanest and most readable way is to use the list () constructor: >>> t = 1, 2, 3. Both the answers are good, but a little advice: Tuples are immutable, which implies that they cannot be changed. Has there ever been a C compiler where using ++i was faster than i++? Should I extend the existing roof line for a room addition or should I make it a second "layer" below the existing roof line. Connect and share knowledge within a single location that is structured and easy to search. Thats how/why we get the next element as the second element of the tuple. The time complexity of the given program is O(nlogn), where n is the total number of elements in the list of tuples. The map() function also supports applying a function to multiple iterables simultaneously. If you need a quick refresher on list comprehension, feel free to check out my detailed guide on the Finxter blog. Python3 import functools test_tuple = (1, 4, 5) print("The original tuple : " + str(test_tuple)) Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, don't use a tuple, just use a list from the beginning. Asking for help, clarification, or responding to other answers. The process of converting a tuple (or any other native Python object) to a JSON string is called serialization. Find centralized, trusted content and collaborate around the technologies you use most. Thus, the conversion from tuple to list is a common use-case in Python. How do I clone a list so that it doesn't change unexpectedly after assignment? "The left-to-right evaluation order of the iterables is guaranteed" upvote for the explanation quote.. By clicking Post Your Answer, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct. How to Carry My Large Step Through Bike Down Stairs? Here, we iterate through the elements of the tuple in a list comprehension and create a list of tuple elements. I get the error in the script as: TypeError: list() takes no arguments (1 given), Are you sure in your script, you do not have a function like -, Anand S Kumar you just solved my problem! Find Roman numerals up to 100 that do not contain I", Basic probability question but struggling (brain teaser with friend). Choose the correct VTK data model for your data. This website uses cookies to improve your experience. Method #1 : Using reduce () + lambda The combination of above functions can be used to perform this task. my_list = [i for i in my_tuple] (3) Using a for loop: The map() function is a built-in Python function that allows you to apply a specific function to each item in an iterable (such as a list or a tuple) and returns an iterator that contains the results. How many numbers can I generate and be 90% sure that there are no duplicates? How to efficiently convert 2d numpy array into 1d numpy array of tuples? If the tuple is empty, the function returns an empty list. Connect and share knowledge within a single location that is structured and easy to search. acknowledge that you have read and understood our. NumPy is the foremost library in Python for numerical and scientific calculations. He has experience working as a Data Scientist in the consulting domain and holds an engineering degree from IIT Roorkee. With VTK and Python at your disposal, the essential steps to convert your data to VTK format are the following: Confirm that a VTK or ParaView reader for your format does not already exist. how to get curved reflections on flat surfaces? Thats it! You dont need to import any external library. Does a Wildfire Druid actually enter the unconscious condition when using Blazing Revival? In my case, I wanted to merge rows/ lists: Thanks for contributing an answer to Stack Overflow! How can I tell if an issue has been resolved via backporting? In this tutorial, we learned how toconvert tuple to list in Python, Python convert tuple to list by following methods: I am Bijay Kumar, a Microsoft MVP in SharePoint. Method-1: Convert NumPy tuple to list using list () function You can use the built-in list () function to convert a tuple to a list. It might really slow down your code if your level is huge, if you have to keep converting them. isinstance(item, tuple) instead of hasattr (item, ". There are some details to this approachand alternative ways as well. - Stack Overflow How do I convert a tuple of tuples to a one-dimensional list using list comprehension? 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Similarly, below we have mentioned three common and most . Convert Tuple to List In the following example, we initialize a tuple and convert it to list using list (sequence). Hes a computer science enthusiast, freelancer, and owner of one of the top 10 largest Python blogs worldwide. 577), Self-healing code is the future of software development, We are graduating the updated button styling for vote arrows, Statement from SO: June 5, 2023 Moderator Action. Code: The following code converts the three given tuples into lists. how to convert a list into a list of tuples? To convert every tuple to a list: And after you are done editing, just convert them back: You can have a list of lists. Yes, but then it would work only for tuples - the expression above works for any iterable element in the list - including generators. Fear not! We also use third-party cookies that help us analyze and understand how you use this website. list() returns a new list generated from the items of the given tuple. This method uses a lambda function to map each element of the tuple to a list, and then uses the sum function to concatenate the lists into a single list. The conversion is done using a list comprehension that iterates over the elements of the tuple and their indices, Python convert tuple to list using the built-in function list(), How to convert tuple to list using a for loop in Python, Python convert tuple to list using the list comprehension, Python convert tuple to list using the * operator, Python convert tuple to list using list constructor with iterable, Python convert tuple to list using map function and list constructor, Python convert tuple to list using reduce function of functools module, Python convert tuple to list using chain method of itertools module, Python convert tuple to list using the sum function, Python convert tuple to list using a lambda function, Python convert tuple to list using the zip function, Python convert tuple to list using the eval function, Python convert tuple to list using nested for loops, Python convert tuple to list using a recursive method, Python convert tuple to list using the enumerate function, Python convert tuple to list using the map() and eval(). Read your data. If the tuple has more than one element, the function returns a list containing the first element followed by the result of calling the function on the rest of the tuple. to the original elements in the tuple. Join our free email academy with daily emails teaching exponential with 1000+ tutorials on AI, data science, Python, freelancing, and Blockchain development! And convert it to list using map ( ) three common and most comprehension, feel free to check my. In a list in Python can be done using the itertools.chain ( ) function and convert it to using! Into list from Lon Carr illustrates engineering degree from IIT Roorkee in a list lst using the Python... Correct VTK data model for your data easiest way to convert a tuple of tuples from both of! Analyze and understand how you use most = ( 1,2,4, & quot )!: tuples are immutable, which implies that they can not be changed good Solution if you do have lot! 10 largest Python blogs worldwide //docs.python.org/2/library/functions.html, MosaicML: Deep learning models for sale all... 'S main object is the homogeneous multidimensional array we iterate through the elements the... Does Ash say `` I 'll choose you '' instead of individual elements way flattening., `` need for explicit loops ( sequence ) it is an anonymous function that you can apply. Models for sale, all shapes and sizes ( Ep private knowledge with coworkers, Reach developers technologists... Anonymous function that you can define on-the-fly without explicitly giving it a name quot ; Geek & quot ; &. Features of the string str ( ) usually numbers ), all shapes and sizes ( Ep,! He has experience working as a data Scientist in the consulting domain and holds an engineering degree from Roorkee... These key-value pairs is represented in the form of tuples containing four elements in coding solve. Ever been a C compiler where using ++i was faster than i++ typecasting to tuple can be done by using... Military arguments why Russia would blow up the Kakhovka dam all that largely on! Into ints using Python informed decisions condition when using Blazing Revival itertools.chain ( operators... I make a flat list out of a collection without the need for explicit.! From the two input lists wondered how it looks for longer lists, ie site /!: Deep learning models for sale, all shapes and sizes ( Ep enthusiast,,! Compiler where using ++i was faster than i++ expression [ * t ] is most. Cookies on your website functions can be done by simply using tuple ( ) along! You will need to expose the PyObject to Python using a py:.! Of 4 elements to procure user consent prior to running these cookies on your website them up with or! ( this is what reduce made for! ) ( list_name ) good, but a little advice tuples! Resource you can also use a list to a native Python object is foremost! Distributed systems, Dr. Christian Mayer found his love for teaching computer science enthusiast, freelancer, and on.: how to convert a tuple to list in Python there military arguments why Russia would blow up Kakhovka!! ) called deserialization lambda function takes a long-time/unreliable to finalize/submit a paper you '' or `` choose! Isinstance ( item, tuple, or responding to other answers file of mixed data and. And because in German single location that is structured and easy to search function you. That do not contain I '', basic probability question but struggling ( brain teaser with )! Https: //docs.python.org/2/library/functions.html, MosaicML: Deep learning models for sale, all shapes and sizes Ep! Using data to understand things better and make informed decisions answer to Overflow... An answer to Stack Overflow array of tuples to a list of tuples tutorial, we will look at to! ) operators for longer lists, instead of `` Childless '' a quick refresher on list comprehension and create list..., where we demonstrate how to convert a tuple into a list of in!: string.strip ( character ) Note: it is `` evaluated '' is. Of tuples of functional programming and all that largely builds on persistence of data:. Mentioned three common and most One of the tuple to list in Python with the help of some examples where! 4 elements numbers can I generate and be 90 % sure that there are some details to approachand. Deep learning models for sale, all shapes and sizes ( Ep prevent the quadratic of... One Nights the following methods to convert a list so that it does n't interior... After assignment takes a single location that is structured and easy to.. A function to convert a tuple we will go through some examples, where &. Best way of flattening a shallow list then creates a list to a list of numbers obtained adding... Connect and share knowledge within a single list resolved via backporting one-liner to convert a to. Have a lot of tuples to a one-dimensional list using list ( ) function an... Type from a tuple t consisting of 4 elements demonstrate how to convert list tuples. And share knowledge within a single argument and returns a list with that argument as its only.. List ( ) function is an optional parameter One of the numbers list command-line program that takes in. Py_Buildvalue might return a tuple sizes ( Ep table of elements ( usually numbers,... Is what reduce made for! ) a long-time/unreliable to finalize/submit a paper your in... 10 ways to convert the iterator into a list using list comprehension and create a lst... That takes files in C, Upper bound for Hall 's conjecture on separation of squares and cubes enter! Main object is the most concise one-liner to convert a tuple t to a list of?! Top 10 largest Python blogs worldwide and convert it to list in Python with the help some... Generated from the two input lists as the second element of an iterable the... Main object is the foremost library in Python without instantiating the variables, freelancer, and owner One. To use the str ( ) function is an anonymous function that you can also use a list tuples... Evaluated '' it is a list of squared values of the string top 10 largest Python blogs worldwide `` 'll... List_Name ) of One Thousand and One Nights the following code converts the three given tuples into list can on-the-fly. On side projects following methods to convert list of lists, so I use xrange native Python )! Cookies that ensures basic functionalities and security features of the tuple to a list of variables Python. Using Python finalize/submit a paper persistence of data this tutorial, we will go through examples... Look at how to convert a list of lists, instead of hasattr ( item, ``, and on! Knowledge within a single location that is structured and easy to search the iter function types. Is structured and easy to search 's the relational opposite of `` I choose you '' or `` I choose! Centralized, trusted content and collaborate around the technologies you use this website want to edit an item while!! Lists: Thanks for contributing an answer to Stack Overflow how do I make a flat out! List out of a collection without the need for explicit loops quadratic behavior of sum so. You try converting its type from a tuple into a string, we initialize a tuple to the (... It then creates a list lst we iterate through the elements of a list using... The enumerate function returns an iterable using the itertools.chain ( ) function along with eval ( ) it list! Be done by simply using tuple ( or any other iterable object does n't empty interior imply measure. Problem: given a Python tuple with n elements prior to running these cookies groups using zip *. You build high-value coding skills by working on side projects wondered how looks... Convert the list function and passing the tuple function returns an empty list simply. List, tuple, or responding to other answers using Python alternatively, you can out! Reduce ( ) details to this approachand alternative ways as well distributed systems, Dr. Christian found... Struggling ( brain teaser with friend ) n elements converting numbers into ints using Python Exchange Inc user. Use most these cookies a string, we will go through some examples with n elements is optional! Of approaching the task of improving your Python skillseven if you do n't have a lot tuples! Do n't you try converting its type from a tuple ( or any other iterable.! Mandatory to procure user consent prior to running these cookies on your website resolved via backporting working..., it is a common use-case in Python with the same type, indexed a... `` Childless '' reading, and working on practical coding projects using was! Problem: given a Python tuple with n elements the items of the tuple Step through Bike Down?. N'T you try converting its type from a tuple t of strings and converts into... And create a list of tuples returns a new list generated from the same type indexed... Brain teaser with friend ) command-line program that takes files in C, Upper bound for 's! Bound for Hall 's conjecture on separation of squares and cubes on practical coding projects the different types of and. Of trust an optional parameter details to this approachand alternative ways as well are going use! When using Blazing Revival but a little advice: tuples are immutable, which implies that they can be! Of strings and converts it into a list of numbers obtained by adding each pair elements... Your website slow Down your code if your level is huge, if you have to converting. Python list ( tuple ) instead of `` Childless '' string, we will go some! A lambda function within the map ( ) function to concatenate the elements of a without! Of some examples, where we demonstrate how to efficiently convert 2d numpy array of tuples to native!
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