M Tools Activation Code Jun 2026

def redeem_code(code, user_identifier): cursor.execute("SELECT is_used, expires_at FROM activation_codes WHERE code = ?", (code,)) row = cursor.fetchone() if not row: return "Invalid code" if row[0]: return "Code already used" if row[1] and datetime.now() > datetime.fromisoformat(row[1]): return "Code expired" cursor.execute("UPDATE activation_codes SET is_used=1, used_by=? WHERE code=?", (user_identifier, code)) conn.commit() return "Activation successful"