Generate x number of pages to display out of the total number of pages and current page number

pagination_helper.py

def get_pages_range(total_pages_number, display_pages_number,
                    current_page_number):
    """
    Generate x number of pages to display out of the total number of pages and
    current page number.

    :param int total_pages_number: Total number of pages.
    :param int display_pages_number: Number of pages to display.
    :param int current_page_number: Current page number.
    :return iterable:
    """
    lower_limit = upper_limit = min(current_page_number, total_pages_number)

    i = 1
    while i < display_pages_number and i < total_pages_number:
        if lower_limit > 1:
            lower_limit = lower_limit - 1
            i = i + 1

        if i < display_pages_number and upper_limit < total_pages_number:
            upper_limit = upper_limit + 1
            i = i + 1

    return range(lower_limit, upper_limit + 1)