Pretty list to fit the terminal, and add header

def pretty_list(rtlst, header, sortBy=0, borders=False):
    """Pretty list to fit the terminal, and add header"""
    if borders:
        _space = "|"
    else:
        _space = "  "
    # Windows has a fat terminal border
    _spacelen = len(_space) * (len(header) - 1) + (10 if WINDOWS else 0)
    _croped = False
    # Sort correctly
    rtlst.sort(key=lambda x: x[sortBy])
    # Append tag
    rtlst = header + rtlst
    # Detect column's width
    colwidth = [max([len(y) for y in x]) for x in zip(*rtlst)]
    # Make text fit in box (if required)
    width = get_terminal_width()
    if conf.auto_crop_tables and width:
        width = width - _spacelen
        while sum(colwidth) > width:
            _croped = True
            # Needs to be cropped
            # Get the longest row
            i = colwidth.index(max(colwidth))
            # Get all elements of this row
            row = [len(x[i]) for x in rtlst]
            # Get biggest element of this row: biggest of the array
            j = row.index(max(row))
            # Re-build column tuple with the edited element
            t = list(rtlst[j])
            t[i] = t[i][:-2] + "_"
            rtlst[j] = tuple(t)
            # Update max size
            row[j] = len(t[i])
            colwidth[i] = max(row)
    if _croped:
        log_runtime.info("Table cropped to fit the terminal (conf.auto_crop_tables==True)")  # noqa: E501
    # Generate padding scheme
    fmt = _space.join(["%%-%ds" % x for x in colwidth])
    # Append separation line if needed
    if borders:
        rtlst.insert(1, tuple("-" * x for x in colwidth))
    # Compile
    rt = "\n".join(((fmt % x).strip() for x in rtlst))
    return rt