title: Folium Map doesn't display Marker locations from Postcodes
body: <p>I was given .csv file containing location information and was tasked to retrieve the latitude / longitude from the postcodes. I executed this code:</p>
  
  <pre><code>import postcodes_io_api
  import pandas as pd
  import folium
  
  df = pd.read_csv(r'C:\Users\AUDIO-VISUAL\Desktop\MapPinpoint\RadioFibreSites.csv', 
                   encoding='ISO-8859-1')
  
  api = postcodes_io_api.Api(debug_http=True)
  
  for x in df["Postcode"]:
      data = api.get_postcode(x)
      latitude = [data["result"]["latitude"]]
      longitde = [data["result"]["longitude"]]
  
      m = folium.Map(location=[57.240618, -2.449411],
                    zoom_start = 12,
                    tiles='Stamen Terrain')
  
      for la, lon in zip([data["result"]["latitude"]], [data["result"]["longitude"]]):
          folium.Marker([la, lon], popup='&lt;i&gt;Mt. Hood Meadows&lt;/i&gt;').add_to(m)
  </code></pre>
  
  <p>However the <code>folium</code> map only displays the last item in the file, instead of all of them at once.</p>