基本上在我之前已经安装了带有pip（pip install folium）的folium之后，代码工作正常，但是突然我得到了这个错误。
下面是我的代码：

import pandas as pd
import folium
from geopy.geocoders import ArcGIS

#data frame
snifim_df = pd.read_csv('Snif.csv')
nom = ArcGIS()

snifim_df['LAT'] = snifim_df['Address'].apply(nom.geocode,timeout=15).apply(lambda x:x.latitude)
snifim_df['LON'] = snifim_df['Address'].apply(nom.geocode,timeout=15).apply(lambda x:x.longitude)

Mcmap = folium.Map(location=[32.58, -99.09], zoom_start = 6)
fg = folium.FeatureGroup(name = "McDonalds")

snif_lat = list(snifim_df['LAT'])
snif_lon = list(snifim_df['LON'])
snif_name = list(snifim_df['Name'])
snif_address = List(snifim_df['Address'])

html = """  <h4>Mcdonalds</h4>
            Snif_Adress: %s

"""

for lat,lon,name,add in zip(snif_lat,snif_lon,snif_name,snif_address):
    iframe = folium.Iframe(html = html % str(add),width=200, height=100)
    fg.add_child(folium.Marker(location=[lat,lon],popup=folium.Popup(iframe),icon="glyphicon glyphicon-piggy-bank"))

Mcmap.add_child(fg)
Mcmap.save("test.html")