Python How to keep repeating a program until a specific input is obtained

Question

I have a function that evaluates input  and I need to keep asking for their input and evaluating it until they enter a blank line  How can I set that up   while input            evaluate input   I thought of using something like that  but it didn t exactly work  Any help

User · Answer

you probably want to use a separate value that tracks if the input is valid   good input   None while not good input       user input   raw input  enter the right letter           if user input in list of good values           good input   user input

User · Answer

This is a small program that will keep asking an input until required input is given  we should keep the required number as a string  otherwise it may not work  input is taken as string by default required number    18   while True      number   input  quot Enter the number n quot       if number    required number          print   quot GOT IT quot           break     else          print   quot Wrong number try again quot      or you can use eval input    method required number   18  while True      number   eval input  quot Enter the number n quot        if number    required number          print   quot GOT IT quot           break     else          print   quot Wrong number try again quot

User · Answer

There are two ways to do this   First is like this   while True                Loop continuously     inp   raw input       Get the input     if inp                If it is a blank line            break                break the loop   The second is like this   inp   raw input           Get the input while inp                 Loop until it is a blank line     inp   raw input       Get the input again   Note that if you are on Python 3 x  you will need to replace raw input with input

User · Answer

Easier way    required number   18  required number input  Insert a number     while required number    18     print  Oops  Something is wrong       required number input  Try again     if required number     18      print  That s right      continue the code

[python] Python: How to keep repeating a program until a specific input is obtained?

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