from ipyleaflet import Map, Polyline

lines = Polyline(
    locations=[
        [[48.265643898808236, 336.7529296875],
         [48.265643898808236, 337.7529296875],
         [47.265643898808236, 336.7529296875]],
        [[42.265643898808236, 338.7529296875],
         [48.265643898808236, 337.7529296875],
         [47.265643898808236, 339.7529296875]],
    ],
    color="green" ,
    fill=False
)

center = [48.265643898808236, 336.7529296875]

m = Map(center=center, zoom=7)
m.add(lines)
m