map.py

!pip install ipyleaflet

from ipyleaflet import Map, Marker

center = (52.204793, 360.121558)

m = Map(center=center, zoom=15)

marker = Marker(location=center, draggable=True)
m.add_layer(marker);

display(m)

# Now that the marker is on the Map, you can drag it with your mouse,
# it will automatically update the `marker.location` attribute in Python

# You can also update the marker location from Python, that will update the
# marker location on the Map:
marker.location = (50, 356)