#!/usr/bin/env python
# coding: utf-8

# In[1]:


import os
import folium

print(folium.__version__)


# In[2]:


lon = lat = 0
zoom_start = 1

m = folium.Map(location=[lat, lon], zoom_start=zoom_start)

kw = {'opacity': 1.0, 'weight': 4, 'color': 'red'}
folium.PolyLine(
    locations=[(2, 179), (2, -179)],
    popup='Wrong',
    **kw,
).add_to(m)


kw.update({'color': 'blue'})
l1 = folium.PolyLine(
    locations=[(-2, 179), (-2, 181)],
    popup='Correct',
    **kw,
).add_to(m)


kw.update({'color': 'green'})
l2 = folium.PolyLine(
    locations=[(-6, -179), (-6, 179)],
    popup='Correct',
    **kw,
).add_to(m)


kw.update({'color': 'orange'})
l3 = folium.PolyLine(
    locations=[(12, -179), (12, 190)],
    popup='Artifact?',
    **kw,
).add_to(m)

m.save(os.path.join('results', 'DateLineExample.html'))

m