def make_vertical_bar(percentage, width=1):
    """
    Draws a vertical bar made of unicode characters.

    :param value: A value between 0 and 100
    :param width: How many characters wide the bar should be.
    :returns: Bar as a String
    """
    bar = ' _▁▂▃▄▅▆▇█'
    percentage //= 10
    if percentage < 0:
        output = bar[0]
    elif percentage >= len(bar):
        output = bar[-1]
    else:
        output = bar[percentage]
    return output * width
