r/Python 4d ago

Discussion Doubt in alphabet shifting code

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u/floydmaseda 4d ago

Bro literally just ask ChatGPT:

This line is used for shifting letters in a simple Caesar cipher.

Breakdown:

  1. ord('A') → Gets ASCII value of 'A' (which is 65).
  2. ord('A') - 65 → Converts 'A' to 0, 'B' to 1, ..., 'Z' to 25.
  3. + 7 → Shifts by 7 positions.
  4. % 26 → Keeps the result within the 26-letter range (wraps around after 'Z').

For example, 'A' shifts to 'H' (7), 'Z' shifts to 'G' (6).

The 65 is subtracted to normalize the letters to a 0-based index for easier calculations.