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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 split_box( fraction, x,y, w,h ):
 """Return set of two boxes where first is the fraction given"""

    if w >= h:
        new_w = int(w*fraction)
        if new_w:
            return (x,y,new_w,h),(x+new_w,y,w-new_w,h)
        else:
            return None,None
    else:
        new_h = int(h*fraction)
        if new_h:
            return (x,y,w,new_h),(x,y+new_h,w,h-new_h)
        else:
            return None,None