app.py

# -*- coding: utf-8 -*-
"""panel_leafmap.ipynb

Automatically generated by Colaboratory.

Original file is located at
    https://colab.research.google.com/drive/1t6pTDm97iBCYuNDvlpYgin3mf-6f4Kgn
"""

#!pip install leafmap panel

import leafmap
import panel as pn
pn.extension(sizing_mode="stretch_width")

layer = pn.widgets.Select(options=["Census_Regions16659", "Census_Regions_Labels31526", "States"], name='layer')

def leafmap_viz(layer):
    m = leafmap.Map(center=[30, -90], zoom=4)
    m.add_census_data(wms="Census 2020", layer=layer)
    return m

pn.Column(layer, pn.bind(leafmap_viz, layer))

template = pn.template.BootstrapTemplate(
    title="Leapmap Panel App",
    sidebar=[layer],
    main=[pn.bind(leafmap_viz, layer)],
    accent_base_color="#88d8b0",
    header_background="#88d8b0",
)
template.servable()