python openstreetmap multiple latitude

# ...
coordinates = []
for result in results:
    coordinates.append((result[5], result[6]))

lat_center = sum([coordinate[0] for coordinate in coordinates]) / len(
    coordinates
)
lng_center = sum([coordinate[1] for coordinate in coordinates]) / len(
    coordinates
)

html = r"""
<!DOCTYPE html>
    <html>
        <head>
        <style type="text/css">
                html { height: 100%; }
                body { height: 100%; margin: 0; padding: 0 }
                #mapid { height: 100% }
        </style>
        <link rel="stylesheet" href="https://unpkg.com/[email protected]/dist/leaflet.css" integrity="sha512-Rksm5RenBEKSKFjgI3a41vrjkw4EVPlJ3+OiI65vTjIdo9brlAacEuKOiQ5OFh7cOI1bkDwLqdLw3Zg0cRJAAQ==" crossorigin=""/>
        <script src="https://unpkg.com/[email protected]/dist/leaflet.js" integrity="sha512-/Nsx9X4HebavoBvEBuyp3I7od5tA0UzAxs+j83KgC8PU0kgB4XiK4Lfe4y4cgBtaRJQEIFCW+oC506aPT2L1zw==" crossorigin=""></script>
        </head>
    <body>
        <div id="mapDiv" style="width:100%; height:100%"></div>
        <script>
"""
html += "var map = L.map('mapDiv').setView([{lat}, {lng}], 10);".format(
    lat=lat_center, lng=lng_center
)
html += """
    L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
        attribution: '© <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors'
    }).addTo(map);
"""

for latitude, longitude in coordinates:
    html += "L.marker([{lat}, {lng}]).addTo(map);\n".format(
        lat=latitude, lng=longitude
    )

html += "</script> </body> </html>"
self.view.setHtml(html)
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