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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def image(value, width='', height=''):
 """ Accepts a URL and returns an HTML image tag ready to be displayed. Optionally, you can set the height and width with keyword arguments. """

    style = ""
    if width:
        style += "width:%s" % width
    if height:
        style += "height:%s" % height
    data_dict = dict(src=value, style=style)
    return '<img src="%(src)s" style="%(style)s">' % data_dict