def foo():
    return 'abc'

def bar():
    return 'hello'



def colorize(text, bg, fg="#ffffff", next_bg="#333333", arrow=None):
    """ Format text in pango formatting and add powerline characters

    text: string
        Text to format

    bg: string
        Color name or html colorcode, background color

    fg: string (#ffffff)
        Color name or html colorcode, foreground color

    next_bg: string (#333333)
        Color name or html colorcode, background color for powerline arrow

    arrow: string
        'l' or 'r': powerline arrow to append left or right
        """

    out_str = "<span background=\"%s\" foreground=\"%s\"> %s </span>" % (bg, fg, text)

    arrows = {'left': '', 'right': ''}

    if arrow is not None:

        arrow_str = "<span foreground=\"%s\" background=\"%s\">%s</span>"\
                     % (bg, next_bg, arrows[arrow])
        if arrow == 'left':
            out_str = arrow_str + out_str
        else:
            out_str = out_str + arrow_str

    return out_str



def combine_funs(funs, colors, fg_color, direction='left', bg='#333333'):

    colors.append(bg)           #  Set correct background after last arrow

    # If left, switch fore/background colors of arrow icons
    offset = 1 if direction == 'right' else -1

    # Loop through items and colors, render formatted text
    out_str = ''
    for index, item in enumerate(funs):
        try:
            cmd_output = line[index]()
        except:
            cmd_output = '#ERROR'

        out_str = out_str + colorize(cmd_output, colors[index], fg_color,
                                     colors[index+offset], direction)
    return out_str

funs = [foo, bar]
colors = ['#A22300', '#CD2300']     # Background
fg_color = 'white'                  # Foreground
direction = 'left'                  # Pointing direction of powerline arrows

combine_funs(funs, colors, text_color, direction)