Asking the user for input until they give a valid response python. Asking the user for input until they give a valid .

Asking the user for input until they give a valid response python There is really no need for that and no need for two loops at all. Also, to get an input that will almost certainly be between 1-4, use a while loop to keep on asking for input until 1-4 is given: Jan 15, 2022 · Asking the user for input until they give a valid response Using exceptions in Python is pretty Asking the user for input until they give a valid response. selection = input(" I am uncertain about how to make the program continue to ask for input until the user picks either "cat" or "dog". If age<=0, ask the user to input a valid number for age again, (i. I have finished a code, so that it asks the user to answer an arithmetic question and tell them if their answer is correct or not and so on. Oct 16, 2019 · Asking the user for input until they give a valid response (23 answers) Closed 5 years ago . I am trying to only allow some input in python using the following code Asking the user for input until they give a valid response (23 answers) Closed 9 years ago . You're trying to validate an acceptable input and doing in incorrectly. eg To solve this problem, we need to implement a method to continuously ask the user for input until they provide a valid response. i've used while and if statements. Use a loop with a try-except block. I am a newbie programmer and am trying to code a program where I ask the user for a specific input like Obama, Clinton or Bush and congratulate them when they give the right answer or notify them when they give the wrong answer. So I have this code where I'm trying to get the user to enter a number and the output will be "Line (whichever line it is), Hello World" and will repeat this however many times the number the user inputted is. Feb 25, 2022 · Once you fix that, you will notice that your program accepts even numbers, because you do nothing to prevent it from accepting even numbers. Red, "Please enter a valid answer. Asking the user for input until they give a valid response). In the code below, I am trying to do a few things: Nov 19, 2019 · Asking the user for input until they give a valid response in python can you not send it back to the input that throw the except? Asking the user for input Nov 29, 2012 · $ python so27. Sep 13, 2019 · Edit: Having looked at the answer here - Asking the user for input until they give a valid response I disagree that it is a duplicate. So I coded a function that takes the value of a batteries variable. 1 for Fahrenheit to Celsius, 2 for meters to centimetres and 3 for megabytes to gigabytes") if op == "1": #stuff invalid_input = False # Set to False because Feb 4, 2021 · What i am trying to do do is this. Jun 15, 2016 · How do I get a specific input in python such as variable = input() if variable == "Specific input": do stuff I need the input to be one of two options say X or O Jul 26, 2015 · I'm trying to get this loop to return to the the question of inputting user input until they decide to exit the program (choose selection 7), I'm having trouble figuring it out. Jun 8, 2018 · Asking the user for input until they give a valid response python; or ask your own question. I'm trying to compare a input that the user receives that checks if the input is actually a number. python multiple user Apr 23, 2015 · I am using python and would like to know if it would be possible to ask the user for the name of a variable and then create a variable with this name. try-except block in Python provides a solid way to deal with all types of errors. 100% of what you need is in the duplicate, you just need to extrapolate it to your single May 27, 2022 · The code next calls a function to allow the user input their answer, the function also takes that answer and converts it to a number, which is passed and appened to a list, for summing at the end. try: age = int(input("Please enter your age: ")) except ValueError: print("Please enter numeric value") continue. Mar 31, 2021 · Asking the user for input until they give a valid response (23 answers) Closed 3 years ago . If Input is 14 digits, Nov 28, 2022 · Asking the user for input until they give a valid response Asking the user for input until they give a valid response. May 12, 2016 · At the moment, this piece of code only repeats "Please enter a valid number of juveniles" if I type in a number less than 0 (No surprises there), I want it to keep asking the same question until the user gives anything over 0, and once it's done move onto the next variable (adults). Dec 8, 2021 · Use the input function to take input from the user and if statement to match the user-given value. If the name contains a number, the program will ask for the name again. Is that what you mean? – Oct 29, 2018 · Working in Python 3. When the user hits Enter the function gets the current value from the Entry, closes the GUI and returns the value to the calling code. Mar 27, 2017 · Asking the user for input until they give a valid response (23 answers) Fastest way to check if a value exists in a list (12 answers) Closed 7 years ago . Thanks for reading. Dec 5, 2024 · When developing programs in Python, obtaining valid user input is critical to ensure that your application behaves as expected. here is my code so far giving me an error: Asking the user for input until they give a valid response (23 answers) Closed 10 years ago . e. This is the function quest_ans() Apr 25, 2020 · To ask the user for input until a valid response, just take the input in an infinite loop (using while True) and when the value is valid, terminate the loop (using break keyword). Asking the user for input until they give a valid response python; or ask your own question. Related. 6. Apr 6, 2022 · the input() function can accept any characters that can be typed. The loop should only kick-back if the two entries are different data types. Feb 17, 2020 · To keep our scripts functioning through malice and stupidity, we need to set up proper mechanisms for requesting command line input from users. for input until they give a valid response. loop in python from user input. I'm trying to collect either two words, or two integers via input(). I've seen a lot of input Jun 13, 2014 · I have some code that I want to ask the user for a number between 1-100 and if they put a number between these it will print (Size: (input)) and break the loop, if however, they put in a number outside 1-100 it will print (Size: (input)), and proceed to re-ask them for a number, I have run into some problems though. Python while loop ask more than once Apr 14, 2022 · Asking the user for input until they give a valid response (23 answers) Closed 2 years ago . Video Tutorial shows the step by step guide to create a python program for taking input from user, until he gives a valid response. I've written a BMI calculator but I'd like there to be a way to ensure the user only types numbers so, if something else was input the question was to be asked again. If a match is found, the loop ends and you list comprehension gets executed. Testing Valid Input Python. Further Reading. Python newbie here so sorry for what I'm sure is a stupid question, but I can't seem to solve the following challenge in a tutorial that is asking me to use a while loop to check for valid user input. I wrote a script: def age_name(): # May 3, 2016 · I won't go into the details here because there's an excellent resource on how to write a function for that here: Asking the user for input until they give a valid response. While true will run until break not execute. x; or ask your own question. 7 im testing some stuff out, and i try to understand how can i ask someone his age. User Inputs a number (for example a SSN or any Identification number) 2. I'm trying to write a code where the program keeps getting the user input in integers and adds it to an empty array. Ask for input until valid input is given. Jun 9, 2021 · Asking the user for input until they give a valid response python; input; or ask your own question. Let’s go through some of the basics and build a solid plan for requesting user input continuously until they enter an appropriate response. Dec 16, 2016 · Asking the user for input until they give a valid response (23 answers) Closed 8 years ago . To handle value errors while reading an integer value – use the try - except block and continue the program's execution (using continue keyword ) to the loop to Mar 7, 2012 · I'm very new to Python, so forgive my newbish question. Jan 8, 2022 · So my professor for python assigned an exercise which was to create a program to accept a user input or "score" and create an if else loop with an if else nested loop inside the first loop to check if the score is greater than or equal to 80. ' while True: # Do stuff # # User pressed enter, break out of loop May 22, 2020 · Asking the user for input until they give a valid response. 2. Jun 7, 2019 · Asking the user for input until they give a valid response Asking the user for input until they give a valid response. I want something like this: I want something like this: print 'Press enter to continue. It fails, but we are already inside the while, and the user input is set. i'm absolutley garbage at python 3. Mar 31, 2019 · I'm asking the user for an integer value but instead of ending the program if the user enters for example a string, I would like to ask the user again and again until an integer is given. Oct 23, 2013 · Asking the user for input until they give a valid response of python, the line. I'm a beginner and created a program that asks user to input his percentage and tell him whether his result is good or bad. Feb 1, 2022 · See the code below. Jan 24, 2017 · Beginner here, looking for info on input validation. I need to have it continue to ask for input until q or quit is entered: Sep 22, 2015 · user = StackOverflowUser. Asking the user for input until they give a valid response Made by the cabbage addicts from the Python room on Stack Overflow . Feb 16, 2020 · I want my function to keep asking the user for an input until it satisfies all criteria. However I would love for the programme to say something like &quot;That is not a valid input&quot; when the player en Asking the user for input until they give a valid response python; input; or ask your own question. My function is as follows: def PromptNumber(Text, Positive, Integer): while True: Jul 11, 2019 · Asking the user for input until they give a valid response (23 answers) Closed 5 years ago . Jun 4, 2013 · Asking the user for input until they give a valid response but Python isn't one of those languages). Hi try to do a program that asks the user for a number and only allow an int between 0-100 If not, i want to ask the same question agian. Sep 26, 2020 · You can use type() or isinstance() to check, but as suggested by @chepner avoid the usage of type because it simply returns the type of an object whereas, isinstance() returns true if the object argument is an instance of the classinfo argument, or of a (direct, indirect or virtual) subclass thereof. Feb 14, 2018 · Asking the user for input until they give a valid response (23 answers) Closed 6 years ago . ) Here is the code. See Asking the user for input until they give a valid response. Mar 17, 2022 · Note that you're asking three times for the exact same input. It’s sometimes necessary to prompt the user for a response and check it, then re-prompt until it fulfils some test. What I am trying to do now is get this sequence of if/ elif/ else commands to loop until the user enters 'Correct', i. (Python) 0. Ask for multiple inputs. Use continue when you get bad input, and break out of the loop when you're satisfied. So the try happens again with the same value for userBear, fails again, and loops forever. Apr 25, 2014 · How do I ask for valid input instead of crashing or accepting invalid values (e. Furthermore, the motive of this question leans more towards input validation, rather than control flow. That function should return a float or integer, so don't forget that input (assuming you are using Python 3) returns a string which you have to cast to int or float manually. Create initials from the name (first letter) and calculate the age of the user. Then, after each losing outcome, give the user another chance to guess the number so that the loop has a chance to reevaluate the guess with the next iteration. In your example, you are haveing the user enter a number for a duration: May 15, 2021 · Asking the user for input until they give a valid response user for input until they give a valid response. I can't figure out how to add a while loop to keep asking for a name until the user types quit. Apr 11, 2021 · Whenever you use a try/except statement you are trying to catch something happening in the code the shouldn't have happened. x objects of different types are compared by the type name so that explains the original behavior since 'int' < 'string': Apr 14, 2022 · I am trying to write a program that stores the names/numbers the user enters in a list and uses functions to compute the maximum, minimum, and average of the students without asking how many there Jun 3, 2014 · Possible duplicate of Asking the user for input until they give a valid user for input until they give a valid response. Aug 19, 2024 · Here are the steps to build a code that asks for user input until it gets a valid response. Mar 26, 2021 · Asking the user for input until they give a valid response (23 answers) Closed last month . You can fix the issue by converting user response to int:. try: Nov 27, 2021 · How to ask the user for input until they give a valid response in Python. The first function is used to ask for an input that is numerical and has not more than 1 decimal point. Here's one clean way: #more. Aug 4, 2022 · Asking the user for input until they give a valid response (23 answers) Closed 2 years ago . -1)? The simplest way to accomplish this is to put the input method in a while loop. Nov 21, 2016 · raw_input returns a string, not int. You can then convert the digit to an integer as before: Jul 30, 2018 · This is an incremental improvement on the accepted answer: Used as is, any invalid input from the user (such as an empty str, or the letter "g" or some such) will cause an exception at the point where the int() function is called. . mat Jul 28, 2022 · Asking the user for input until they give a valid response Asking the user for input until they give a valid response. or terminate based on user input [Python 2. Mar 7, 2023 · Different ways to implement a Python program that will be asking the user for input until they give a valid response 1. If the user is not 14 digits, return to the input and try again 3. Sep 18, 2020 · Asking the user for input until they give a valid response (22 answers) Closed 4 years ago . Once both inputs are valid, the program will print the name and grade. To learn more, see our tips on writing great answers . Feb 16, 2021 · Asking the user for input until they give a valid response This uses while, which is the very thing I do not want. Mar 14, 2020 · Asking the user for input until they give a valid response (23 answers) Closed 4 years ago . Possible duplicate of Asking the user for input until they give a for input until they give a valid response. The approach is to repeat the action till the user is making right choice. I am looking for a way to implement a "press Y to continue, N to cancel" prompt. when the number stated by the program is approximately equal to the users number, however if I do not know the users number I cannot think how I could implement and if statement, and my attempts to use 'while' also do not work. 652. Python- Validating User Input. """ GuessNumber. python library for user input. Python Interview Questions and Answers; Useful Advanced Features of Python Aug 23, 2016 · Asking the user for input until they give a valid response will ask the user if they would like to input more student data after they have done one student. If age is not float or int data type, then ask user to input her/his age again (i. 2. this may not be a hard question but ive tried for hours to create a solution to this question and cant make a functioning code. use a while True loop; use input() to get the user input; use a try-except block to catch invalid inputs; use an else block to break if the input is valid To ask the user for input and repeat the prompt until they give a valid response, you can use a while loop and use a try-except block to catch any errors that may occur when trying to convert the user input to the desired data type. ) 1. ") op = input ("Please input what operation you wish to perform. If not, break the loop. 1 Edit: This post differs from Asking the user for input until they give a valid response because I do not end the loop based on data type of the response. Please enter your age: 23 You are able to vote in the United States! Today you learned how to ask for user input in Python using the input() function. Dec 1, 2015 · Asking the user for input until they give a valid response (23 answers) Closed 9 years ago . If the grade is higher than 10, the program will ask for the grade again. Hi everyone I'm new to Python and I'm trying to create a while loop but I'm finding some difficulties, Asking the user for input until they give a valid response (23 answers) Closed 9 years ago . May 26, 2018 · This is my exercise: get the user's first name, last name and birth year. Sep 13, 2017 · The construct used to re-prompt one question can be repeated as many times as you wish for as many questions as you wish. I have the following code: [a while loop starts] print 'Input the first data as 10 characters from a-f' input1 = raw_input() if not re. py - This program allows a user to guess a number between 1 and 10. statements based on specific user input in Python? 1. Jan 31, 2015 · Asking the user for input until they give a valid response (23 answers) Closed 9 years ago . Mar 18, 2018 · E. At the moment the user is only asked once to give another answer if he gives a string but if he gives a wrong input again, the program stops. What is the most "correct", Pythonic way to do user input validation in Python? Oct 18, 2022 · I'm working on a random number game and have a code that works for the purpose. I am working on a program in python to convert from any number base to any number base. userChoice = int(raw_input("> ")) In Python 2. Stack overflow link : http Oct 8, 2016 · Put all the if-else statements within one big while loop that keeps looping until the user guesses the number correctly. Approach 1: Using a while loop and try-except block One way to achieve this is by using a while loop and a try-except block. Apr 25, 2020 · Here, we are going to learn how to ask the user for input until they give a valid response in Python programming language? Submitted by IncludeHelp, on April 25, 2020 Jan 25, 2018 · If the user enters something which isn't a bear, that input is done, and the try begins. Oct 14, 2021 · I have been tasked with creating a python program that will ask for user inputs and calculate Asking the user for input until they give a valid response Asking the user for input until they give a valid response (23 answers) Closed 1 year ago . Mar 17, 2015 · In summary, the program should ask the user for their name and grade, and continue asking until valid inputs are given. 0. I am finding it difficult to loop my raw_input over and over again until the right answer is entered (Im a noob) Nov 6, 2018 · Once you've got the right logic for your validation conditions, you might think "ok, but how do I get the program to go back to the first input() call so the user gets another chance to enter the right input?". The comments will give the idea what we are doing. If the input value is matched, then use the break statement to exit the loop. Asking the user for input until they give a valid response-1. Dec 16, 2021 · Asking for help, clarification, or responding to other answers. In this guide, we will explore several effective methods for prompting the user for input until they provide a valid response. Possible duplicate of Asking the user for input until they give a valid response Asking the user for input until they give a valid Apr 13, 2020 · Asking the user for input until they give a valid response python; or ask your own question. If not, it asks again for input. Asking the user for input Possible duplicate of Asking the user for input until they give a valid user for input until they give a valid response. The example we’ll use for illustration is asking the user for their age and determining Nov 19, 2017 · Possible duplicate of Asking the user for input until they give a to run while python is waiting for input. Use a dictionary. Mar 12, 2015 · I wrote a program that has a user input a word to produce a list of anagrams. Asking the user for input until they give a valid response (23 answers) Closed 6 years ago . Put the whole code in a while True loop and at the end ask the user if they want to repeat. I want the user to input two values, one has to be an integer greater than zero, the next an integer between 1-10. If so, you may find this useful: Asking the user for input until they give a valid response Jan 21, 2022 · I am trying to modify my code so it does this: Ask if the user wants to play -> if the user wants to play ask rock paper or scisors then do the rock paper scissors commands then ask him if he wants to play again, if he wants i want to reset the code back to the asking rock paper scissors part. Dec 30, 2017 · Here's a function that creates a simple Tkinter GUI that allows the user to input data into an Entry widget. Feb 19, 2021 · Asking the user for input until they give a valid response Asking the user for input until they give a valid response from stdin much slower in C++ than Nov 3, 2016 · Asking the user for input until they give a valid response (23 answers) Closed 8 years ago . If you give it a file that doesn't exist (or one that you don't have read permissions for, or that's locked for exclusive access, or that's stored on a bad disk block, or anything else that can cause an error), it'll ask you again. In this video we will learn how to ask the user for input until they give a valid response in Python. I have to write a code that will execute the below while loop only if the user enters the term "Cyril". You need to have the question inside a while loop, and a try/except inside that loop wrapping the input, and some way to break out of the while loop when a correct answer is inputted. Making statements based on opinion; back them up with references or personal experience. Asking the user for input until they give a valid Mar 5, 2013 · Asking the user for input until they give a valid response (23 answers) Closed 1 year ago . So, I am able to prompt the user for their IP address and check whether it is valid or not, but I cannot seem to figure out how to get this program to ask the user for another IP address if the one entered is invalid. I'm trying to write a piece of code with that repeats the question until the correct answer is given, with a few different responses for likely answers. Mar 14, 2022 · Asking the user for input until they give a valid response (23 answers) Closed 3 months ago . How do I have it so that I can keep asking the user to input something until they input a blank line? Sep 13, 2019 · See Asking the user for input until they give a valid response for some Asking the user for input until they give a valid response. , do you want to only ask for menu items a fixed number of times, or do you want to see if you can get exactly the same behavior (looping forever until you get a response)? – sasmith Commented Mar 18, 2018 at 6:48 Dec 10, 2017 · Asking the user for input until they give a valid response Asking the user for input until they give a valid response-5. Jan 9, 2016 · Asking the user for input until they give a valid response (22 answers) Closed 8 years ago . code that would ask the user for an input, until the input is an integer? May 2, 2020 · Asking the user for input until they give a valid response (23 answers) Closed 4 years ago . Dec 8, 2024 · To ask the user for input until a valid response, just take the input in an infinite loop (using while True) and when the value is valid, terminate the loop (using break keyword). Both strings and integers are valid. 1. Aug 30, 2020 · I'm very new at Python, and I'm trying to make a simple program that asks the user for a password, and if the user didn't guess the password they were asked, ask again until they guess it. How can I reset a while #Alan's Toolkit for conversions invalid_input = True def start() : print ("Welcome to the converter toolkit made by Alan. prompting user for input in Python. Oct 2, 2017 · Asking the user for input until they give a valid response I'm learning python, and am stuck on a project. It is up to you to do the validation on the input string to make sure it works for your use-case. We can use this block to handle the errors and then put some custom messages inside the exception part. May 6, 2019 · I'm writing a code for a guessing game where the user can choose a range for the number to be in, the program will choose a random number, and the user can guess the number until they are correct. In addition to asking for a single input, you now know how to. py Reboot Y/N: foo invalid input Reboot Y/N: bar invalid input Reboot Y/N: y Reboot Asking the user for input until they give a valid response Sep 23, 2020 · Asking the user for input until they give a valid response (23 answers) Closed 1 year ago . May 2, 2020 · Asking for help, clarification, or responding to other answers. from_input() I prefer the latter, as it keeps the necessary input logic with the class it belongs to, and note that neither currently has any validation of the input (see e. Asking the user for input until they give a valid response. go back to step 1. I am creating a program where I have to ask the user the same question, until they type "Stop" Oct 21, 2014 · Now, when you run this, it'll keep asking for a filename until you give it one that you can read. Just set the guess to a default value that will never be equal to the number ( None ) and use one single input , wrapped with try/except : Jul 2, 2013 · Firstly, semi-colons are not needed in python :) (yay). Here is a simple code to keep asking for user input until they enter proper values. the first function checks to see if it is numerically valid, and the second function takes a cash amount and displays the minimum amount of coins you return; } // Otherwise, let them know they didn't enter a valid command and show them a list of commands else { Coloration(ConsoleColor. Accept User Input. I'm trying to write a function that returns True if integer n is positive and odd (otherwise False). See Asking the user for input until they give a valid response and please describe what you've tried so far – May 2, 2013 · Asking the user for input until they give a valid response since it's a beginner python question Asking the user for input until they give a valid response. "); DisplayAvailableCommands(availableCommands); } } } // I'm just assuming your coloration method looks something like this Usually I use raw_input to get the user's response; however, I need raw_input to not wait for the response. Dec 22, 2019 · Asking the user for input until they give a valid response (23 answers) Closed 5 years ago . Dec 16, 2020 · This code will ask you for user input in an infinite loop and check if the user input matches the format that you want. Apr 1, 2012 · Asking the user for input until they give a valid response (23 answers) Closed 8 years ago . Hi all I am pretty new to python coding but have recently stumbled upon a problem, when asking people for names the program will allow numbers, is there a simple way to fix this. In python, I'm asking the user to input an office code location which needs to be in the format: XX-XXX (where the X's would be letters) Sep 27, 2020 · Asking the user for input until they give a valid response (23 answers) Closed 4 years ago . Additionally, you print max, which is a function that calculates the max. Something like this: Asking the user for input until they give a valid response (23 answers) Closed 9 years ago . Asking the user for input until they give a valid Dec 7, 2017 · That way, if the string they entered is not a digit, they will receive a prompt as many times as necessary until they enter an integer (as a string, of course). Asking the user for input until they give a valid response python-3. Feb 19, 2017 · Possible duplicate of Asking the user for input until they give a Python, Loop - Do statements until specific answer is given Asking the user for input until Oct 11, 2020 · Asking the user for input until they give a valid response (23 answers) Closed 4 years ago . Use try and except to detect when the user enters data that can't be parsed. Jul 6, 2012 · It sounds to me like you are asking to create the actual variable name from the user input, such that if they input "person", it would create a variable object like: person = User(). Nov 22, 2019 · Asking the user for input until they give a valid response (23 answers) Closed 5 years ago . My function accepts user input and does not crash based on a mistake. I have this working code for a bingo-like game in Python (a winner is announced when the full card is matched): Aug 15, 2017 · Asking the user for input until they give a valid response (23 answers) Closed 7 years ago . g. If correct input is detected, it should no longer ask for more input. Is there is a way to make sure that the user enters the input data as I want them to, For example, I wrote this code so the user can enter some birthdays and the script will choose one in random: Feb 17, 2020 · To keep our scripts functioning through malice and stupidity, we need to set up proper mechanisms for requesting command line input from users. Sep 10, 2015 · I'm trying to make a small program in Python that generates a random number (from the throw of a die) and asks the user to guess what the number is, and if the user guesses wrong, then depending on whether the guess is higher than the actual number or not the program is supposed to re-prompt them for another guess. May 10, 2017 · I am trying to perform something that has certainly been asked several times before (specifically Asking the user for input until they give a valid response, but I'm either trying to do something too complex or not thinking about my loops the correct way. but if he enter a letter or a negative number it say, only positive number please then it ask the question again, if the number is positive then the program continue. Aug 29, 2018 · im really new in Python 3. I'm trying to write a program that uses a while loop to repeatedly ask a user to input a positive integer until they do but my code keeps printing the number after the while look asks a second time and I don't want that. xnh qpg nwryxs plyo fhxiie ghirh ugz inepmv wiwxh rzo