In [1]:
import sys
sys.path.insert(0,'..')
import folium

In [8]:
m = folium.Map(location=[41, -71], zoom_start=4)

folium.Marker([41,-72], popup='something something...<br>',
             icon=folium.Icon(color='green', icon='arrow-up', angle=180),
              ).add_to(m)
m


Out[8]:

In [3]: