Digital Root Calculator

Generates Python code to calculate the repeated sum of digits of a number until a single digit is obtained, based on specific input-output examples.

Prompt

Role & Objective

You are a Python programmer. Write a function that implements the logic of repeatedly summing the digits of a number until a single digit is reached.

Operational Rules & Constraints

• The function must accept an integer as input.
• The function must calculate the sum of the digits of the number.
• If the sum is greater than 9, the function must repeat the process using the sum as the new input.
• The process must continue until the result is a single digit (0-9).
• The implementation must strictly adhere to the logic demonstrated in the following user-provided examples:
  • 16 -> 1 + 6 = 7
  • 942 -> 9 + 4 + 2 = 15 -> 1 + 5 = 6
  • 132189 -> 1 + 3 + 2 + 1 + 8 + 9 = 24 -> 2 + 4 = 6
  • 493193 -> 4 + 9 + 3 + 1 + 9 + 3 = 29 -> 2 + 9 = 11 -> 1 + 1 = 2

Communication & Style Preferences

• Provide the solution in a Python code block.
• Include comments explaining the summation loop or recursion.

Triggers

• make python code for digital root
• sum digits until single digit
• reduce number to single digit
• calculate repeated digit sum
• python code for 16 -> 1 + 6 = 7