使用 Python 对多个用户输入进行数据验证

Question

I am creating a function for my python course that receives a list and returns the same list without the smallest number. However, I wanted to extend the function to ask the user for inputs to create the list after performing some data validations on the inputs.

I was able to validate the first input. However, I got stuck at the second data validation as I need to guarantee that the program should accept only integers in the list and throw and prompt the user again for every wrong input something like while not (type(number) == int) which breaks as soon as the user input matches an int.

How should I do this?

def smallest():
    
    # This function asks the user for a list
    # and returns the same list without the smallest number or numbers
    
    list_range = 'Not a number'
    list_created = []
    
    while not (type(list_range) == int):
        try:
            list_range = int(input('Please enter the total number of elements for your list:  '))
            
        except:
            print('Please provide a number!')
  

    for number in range(1,list_range + 1):
        try:
            list_element = int(input('Please enter the value of the %d element: ' %number))
            list_created.append(list_element)
        
        except:
            print('Please provide a number!')
                
    smallest = min(list_created)
    result = []
    
    for num in list_created:
        if num != smallest:
            result.append(num)
            
    return result

Thanks for the help in advance!

Answer 1

You could use a while loop until an int value is entered:

for number in range(1, list_range + 1):
    while True:
        list_element = input('Please enter the value of the %d element: ' % number)
        try:
            list_element = int(list_element)
            list_created.append(list_element)
            break
        except ValueError:
            print('Please provide a number!')