Update app.py

app.py

@@ -8,9 +8,6 @@ import ipyleaflet
 
 geemap.ee_initialize(service_account=True)
 
-image = ee.Image('LANDSAT/LE7_TOA_5YEAR/1999_2003')
-print(image.getInfo())
-
 city_centers = {
     "London": (51.5074, 0.1278),
     "Paris": (48.8566, 2.3522),
@@ -22,6 +19,7 @@ ui.input_select("center", "Center", choices=list(city_centers.keys()))
 @render_widget
 def map():
     m = ipyleaflet.Map(zoom=4)
+    dem = ee.Image("USGS/SRTMGL1_003")
     tile = geemap.ee_tile_layer(dem, vis_params, "SRTM DEM")
     url = tile.url
     layer = ipyleaflet.TileLayer(url, attribution="Google", name="DEM")