Objective

Implement shift_letters, a Caesar-style letter shifter.

Steps

• Create letter_shift.py.
• Expose def shift_letters(text: str, amount: int) -> str:.
• Shift every alphabetic character by amount positions in the alphabet.
• Preserve the original case of each shifted letter.
• Wrap around after z and Z.
• Leave non-alphabetic characters unchanged.
• Support negative values and values larger than the alphabet length.

Objective

Implement shift_letters, a Caesar-style letter shifter.

Steps

• Create letter_shift.py.
• Expose def shift_letters(text: str, amount: int) -> str:.
• Shift every alphabetic character by amount positions in the alphabet.
• Preserve the original case of each shifted letter.
• Wrap around after z and Z.
• Leave non-alphabetic characters unchanged.
• Support negative values and values larger than the alphabet length.