Python, creating a new variable from a dictionary? : Note: This isn't anything fancy, like putting all local variables into a dictionary. I then access the same value when I . 2022 MIT Integration Bee, Qualifying Round, Question 17, Preserving backwards compatibility when adding new keywords. Making statements based on opinion; back them up with references or personal experience. I tried using the below code to change the key within the dictionary, and when that didn't work, I searched up how to solve this problem on google. Verbification is sometimes used to create nonce words or joking words. This isn't anything fancy, like Does it cost an action? apple = 1 banana = 'f' carrot = 3 fruitdict = {} # I want to set the key equal to variable name, and value equal to variable value # is there a more Pythonic way to get {'apple': 1, 'banana': 'f', 'carrot': 3}? "He works/worked hard so that he will be promoted.". Create a Dictionary in Python - Python Dict Methods - freeCodeCamp.org But this is not dynamic, i.e., the name of the variables cannot be assigned dynamically on runtime, or their number change. Learn how your comment data is processed. In linguistics, conversion, also called zero derivation or null derivation, is a kind of word formation involving the creation of a word (of a new word class) from an existing word (of a different word class) without any change in form, which is to say, derivation using only zero.For example, the noun green in golf (referring to a putting-green) is derived ultimately from the adjective green. To omit it variable var should be some mutable object, or you should update dictionary value: dictionary['Var'] += 3. Key : The values in Dictionary are accessed through keys. Is it ethical to re-submit a manuscript without addressing comments from a particular reviewer while asking the editor to exclude them? What are the reasons for the French opposition to opening a NATO bureau in Japan? Stack Overflow is my last resort. maybe like this: To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Is it ethical to re-submit a manuscript without addressing comments from a particular reviewer while asking the editor to exclude them? This does not work in general, e.g. To convert a list to a dictionary in Python, you can use the dict () constructor function. For example, the noun green in golf (referring to a putting-green) is derived ultimately from the adjective green. Here's an example of how to get list from string: my_string = "Hello, World!" my_list = my_string.split (", ") print (my_list) Output: ['Hello', 'World!'] Value: Value is the information or the data. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. I'm working with django. How to convert key to value in dictionary type? How do I create several DataFrames for each sheet in an Excel file? Can I do a Performance during combat? They do not modify the existing list. How to convert string containing dictionary to a dictionary? mydictionary[1] = [variable0[0]]; this line solves the problem. main.py However, such processes often do not qualify as conversion, as they involve changes in the form of the word. This question has practically been answered, but I just wanted to say it was funny that you said. Verbification, or verbing, is the creation of a verb from a noun, adjective or other word. (Greg Hewgill practically gave the whole answer, I just made it complete), and like people suggested, you should probably be putting these in the dictionary in the first place, but I'll assume that for some reason you can't. Change the field label name in lightning-record-form component. Another approach that you can use is to use a combination of the map () function and a lambda function to perform the type conversion on the dictionary values. Add the number of occurrences to the list elements, A "simpler" description of the automorphism group of the Lamplighter group, Verifying Why Python Rust Module is Running Slow. I have a string which is little complex in that, it has some objects embedded as values. @Jasie: I added an example of simply using a dictionary in the first place, instead of messing around with variables. Why speed of light is considered to be the fastest? Credit goes to Thu Yein Tun. The thing here is I wouldn't know what is variable1 or 2. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. I tried @Frdric Hamidi's answer and found that locals() only works in the main script and does NOT work in any functions. Can you solve two unknowns with one equation? In this code, that may seem like the best option, but this is just an example. The fromkeys() method is used to create a new dictionary from the given element with a value the user provides. Hence the values for all the dictionary keys are Castlevania. "Convert dictionary to string" sounds like you want to serialize the dictionary (with pickle or json, for example) or pretty-print it (pprint). putting all local variables into a pass the dictionary explicitly, mutate on the dictionary itself directly such as. Note: as dictionary in Python is an unordered collection that might differ from the original sequence. A player falls asleep during the game and his friend wakes him -- illegal? Does each new incarnation of the Doctor retain all the skills displayed by previous incarnations? "He works/worked hard so that he will be promoted. Sum of a range of a sum of a range of a sum of a range of a sum of a range of a sum of. Find centralized, trusted content and collaborate around the technologies you use most. Preserving backwards compatibility when adding new keywords, Stop showing path to desktop picture on desktop, Need Advice on Installing AC Unit in Antique Wooden Window Frame. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, The future of collective knowledge sharing, sounds like a cheap veil around a mutable global. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. If you are willing to create an object, you can then use getattr and setattr to add and get its attributes much as you can with variables. Method 1: Splitting a string to generate a key: value pair of the dictionary In this approach, the given string will be analyzed and with the use of the split () method, the string will be split in such a way that it generates the key: value pair for the creation of a dictionary. dictionary. Need Advice on Installing AC Unit in Antique Wooden Window Frame. But this certainly feels unpythonic. How to Convert Python List to (from) String, Dictionary, and Set What are the reasons for the French opposition to opening a NATO bureau in Japan? How do you modify a variable that's a value in a dictionary when calling that variable by its key? I think it's called non-explicity, and this is one python general: You ALWAYS know variable name. I recommend you to ask google. Preserving backwards compatibility when adding new keywords. You wouldn't want to have many variable implicitly created, this approach is a last resort, which at the minimum hampers readability, cf. Conversion (word formation) - Wikipedia Why do oscilloscopes list max bandwidth separate from sample rate? Concluding the topic, Dictionary is used to collect information that is related to keys such as pin_numbers:names. Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, The future of collective knowledge sharing, Just out of curiosity why would you do that because accessing from. I could just define them all over again in the new function, but because I may have a dictionary with about 20 entries, I thought there may be a more efficient way of doing this. It's a bit of a kludge using the demjson module which allows you to parse most of a somewhat non-confirming JSON syntax string and lists the errors You can then use that to replace the invalid tokens found and put quotes around it just so it parses correctly, eg: Note that while this should work in the example data presented, your mileage may vary if there's other nuisances in your input that require further munging. AC line indicator circuit - resistor gets fried. Nothing really new here, just a consolidation of one answer and an illustration of what @John Y meant in his answer: I recommend creating a class to hold the variables you're trying to create. Verifying Why Python Rust Module is Running Slow. In what ways was the Windows NT POSIX implementation unsuited to real use? Not the answer you're looking for? Add the number of occurrences to the list elements. Based on the answer by mouad, here's a more pythonic way to select the variables based on a prefix: You can even put that in a function with prefix and sourcedict as arguments. For this approach, you have to import the ast package from the python library and then use it with the literal_eval() method.. Why do some fonts alternate the vertical placement of numerical glyphs in relation to baseline? Is a thumbs-up emoji considered as legally binding agreement in the United States? For example, Convert two lists to dictionary in Python - Studytonight This may be appropriate as a comment, but it doesn't really answer the question. I change the value by subtracting one from it by going through the variable. Time complexity: O(n)Space complexity: O(n). How to create dynamically named dictionary in Python? For example, moku may either mean food or to eat. Horribly late to the game, but I needed exactly this, and my solution was: That way it's explicit for reading and there's no potential clobbering of locals() (which is a magic that I'd rather avoid). To use local() is a very bad idea, because you'll have tons of problems with debugging, and there some locals already defined in there.. so it's really bad thing to do You can't create this programmatically like php does. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Why can't Lucene search be used to power LLM applications? Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, The future of collective knowledge sharing, If this were possible, how would it even know how to evaluate. The variable name is placed inside the dict, which will transform them into keys, and the eval () function will extract the value of the variable from the key and create the correspondent. Is a thumbs-up emoji considered as legally binding agreement in the United States? Does it cost an action? Can I do a Performance during combat? Post-apocalyptic automotive fuel for a cold world? Connect and share knowledge within a single location that is structured and easy to search. To learn more, see our tips on writing great answers. I agree, but my trouble is I don't know if this would be this_is_a_variable_actually or i_dont_know_what_will_come_here. How? Similar mainstream examples include "host", as in "host a party", and "chair", as in "chair the meeting". Thanks for contributing an answer to Stack Overflow! "student_num" : 1 } print (dictionary) However, After creating this sample dictionary there are two things to consider. I then access the same value when I go through the dictionary. But what if you want to convert a list into a dictionary? Cat may have spent a week locked in a drawer - how concerned should I be? So this trick is even less clean than locals(). I'm don't think calling globals more than once would actually be more efficient. There is also a similar function called locals(). If you know what the keys are going to be, and you're absolutely sure this is a reasonable idea, you can do something like, but most of the time, you should just use the dictionary. Convert dictionary entries into variables [duplicate], Elegant way to unpack limited dict values into local variables in Python, how Python may optimize locals/globals access when using this trick, The docs explicitly warn not to update the return value of, Python: load variables in a dict into namespace, Starting the Prompt Design Site: A New Home in our Stack Exchange Neighborhood, Temporary policy: Generative AI (e.g., ChatGPT) is banned.