ValueError: blue is not a valid ColorBrewer code

Please add a code sample or a nbviewer link, copy-pastable if possible

# Your code here
def my_colors(feature):
    """Postcodes will be colored based on the drive time assigned to """
def my_colors(feature):
    """Postcodes will be colored based on the drive time assigned to """
    if drive_time[feature['drv_tm']] == 30:
        return #1b9e77
    if drive_time[feature['drv_tm']] == 45:
        return #d95f02
    if drive_time[feature['drv_tm']] == 60:
        return #7570b3
    if drive_time[feature['drv_tm']] == 75:
        return #e7298a
    if drive_time[feature['drv_tm']] == 90:
        return #66a61e
    if drive_time[feature['drv_tm']] == 120:
        return #e6ab02
    else: 
        return #a6761d    
    
style_function=lambda feature:{
        'fillColor': my_colors(feature)
        ,'color': 'black'
        ,'weight': 2
        }  
    
style_function=lambda feature:{
        'fillColor': my_colors(feature)
        ,'color': 'black'
        ,'weight': 2
        }

layer= folium.features.Choropleth(
    geo_data= gjson_dt # gjson_dt, is the geojson feature object created from the geodataframe
    ,data=drive_time #dataframe that contain the postgres table related to the geojson file
    ,style_function= style_function
    ,name= 'drv_time' # name of the layer
    ,key_on='feature.properties.postcode' # Feature ID of the dataframe in this case 'postcode'
    ,columns= ['postcode', 'drv_tm']# column to use for the choropleth
    ,highlight=True # highlight the polygon and zoom in to it when you click on the polygon
    ,legend_name='Drive Time' # legend name
m.add_child(layer)

Problem description

I’m trying to display a thematic map with folium using values from a column and a function (color ramp) but I’m getting ValueError: blue is not a valid ColorBrewer code as result.

[this should explain why the current behavior is a problem and what is the expected output.]

Expected Output

I’m expecting to get a map with specific color based on a column [‘drv_tm’] values and function that contain the color ramp

Output of folium.__version__

0.8.3

[fullonic]

@Gustacro can you place here all the output error? I think that what is creating your error is the Choropleth default value of fill_color=blue.

From Choropleth docstring:

   fill_color: string, default 'blue'
        Area fill color. Can pass a hex code, color name, or if you are
        binding data, one of the following color brewer palettes:
        'BuGn', 'BuPu', 'GnBu', 'OrRd', 'PuBu', 'PuBuGn', 'PuRd', 'RdPu',
        'YlGn', 'YlGnBu', 'YlOrBr', and 'YlOrRd'.

But in fact, currently, only the brewer palettes codes are working. Passing a color hex code gives the same error.

[Conengmo]

Pretty sure the original issue has been solved by https://github.com/python-visualization/folium/pull/1288