I am trying to append the element by using .append() method but every time it is appending on the next line instead of same line.

def process_element_solid_line(line):
    element_solid_info = line.split(',')
    if len(element_solid_info) >= 9:
        element_solid_info = [element.replace(',', '') for element in element_solid_info]
    if 4 <= len(element_solid_info) < 8:
        element_solid_info.insert(4, element_solid_info[3])
    if len(element_solid_info) < 9:
        if len(element_solid_info) >= 8:
            element_solid_info.insert(9, element_solid_info[7])
    return ' '.join(element_solid_info)

and the result i am getting is
41 44 455 454 454 8 28 27
27 but i want the last element 27 on same line.