map3.py

import folium
import pandas

data = pandas.read_csv("Volcanoes.txt")
lat = list(data["LAT"])
lon = list(data["LON"])
elev = list(data["ELEV"])

def color_producer(elevation):
    if elevation < 1000:
        return 'green'
    elif 1000 <= elevation < 3000:
        return 'orange'
    else:
        return 'red'

html = """<h4>Volcano information:</h4>
Height: %s m
"""

map = folium.Map(location=[38.58, -99.09], zoom_start=5, tiles="Stamen Terrain")
fg = folium.FeatureGroup(name = "My Map")

for lt, ln, el in zip(lat, lon, elev):
    iframe = folium.IFrame(html=html % str(el), width=200, height=100)
    fg.add_child(folium.Marker(location=[lt, ln], popup=folium.Popup(iframe), icon = folium.Icon(color=color_producer(el))))


map.add_child(fg)
map.save("Map_html_popup_simple.html")