Objective

Implement convert_base_digits, a base conversion helper for non-negative integers.

Steps

• Create base_transcode.py.
• Expose def convert_base_digits(number: str, source_base: int, target_base: int) -> str:.
• Accept bases from 2 through 36 included.
• Digits 0 through 9 and letters A through Z represent values up to 35.
• Input letters may be uppercase or lowercase.
• Return uppercase letters in the converted result.
• Return the string invalid when either base is outside the allowed range, when number is empty, or when a digit cannot exist in source_base.

Objective

Implement convert_base_digits, a base conversion helper for non-negative integers.

Steps

• Create base_transcode.py.
• Expose def convert_base_digits(number: str, source_base: int, target_base: int) -> str:.
• Accept bases from 2 through 36 included.
• Digits 0 through 9 and letters A through Z represent values up to 35.
• Input letters may be uppercase or lowercase.
• Return uppercase letters in the converted result.
• Return the string invalid when either base is outside the allowed range, when number is empty, or when a digit cannot exist in source_base.