Copied! The highlighted line does the magic and swaps the values of previous_value and next_value at the same time. Notice that inside a programming language that doesn’t support this kind of assignment, you’d really need to use a temporary variable to supply precisely the same result: Copied! The 1st statement https://gunnerziyjr.59bloggers.com/28776018/how-much-you-need-to-expect-you-ll-pay-for-a-good-python-assignment-help