允许用户输入3位数字，然后输出该数字中的各个数字

Question

how would i allow a user to input a 3-digit number, and then output the individual digits in the number in python

eg If the user enters 465, the output should be “The digits are 4 6 5”

sorry if this sounds basic

Answer 1

You use for your number num :

1. num % 10 to extract the last digit.

2. num = num // 10 to remove the final digit (this exploits floored division).

Finally, you want to get out the leading digit first. Therefore you adopt a recursive function to perform the above (which calls itself prior to printing the digit).

Answer 2

The solution using str.isdigit and re.sub functions:

import re

num = input('Enter number:')
if num.isdigit():
    num_sequense = re.sub(r'(\d)(?=\d)', r'\1 ', num)
    print("The digits are:", num_sequense)
else:
    print("There should be only digits", num)

---

The output for the input 123 :

The digits are: 1 2 3

The output for the input a1s2d3 :

There should be only digits a1s2d3

Answer 3

Hard to make in one line, anyway this should do exactly what you want:

inp = list(input())
print("The digits are ", end ='')
for i in inp:
   print(i, end=' ')

If you don't care for formatting, one-liner is possible:

print("The digits are ",list(input()))