Use yaml to parse and also to create a bokeh chart

bokeh.yaml

# &fisher is an anchor/alias provided by yaml
fisher-iris-data: &fisher !io
    read_csv: http://www.math.uah.edu/stat/data/Fisher.csv
cdn: !resources
    js_files: 
    # import javascript file
    - https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.6/d3.min.js
    css_files:
    # bootstrap stylesheet
    - https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css    
    css_raw: 
    - >
        #notebook-container {
            width: 90%;
        }
bokeh: !figure
    figure: 
        width: 800
        height: 400
        x_axis_label: Petal Length
        y_axis_label: Sepal Width
        tools: pan,wheel_zoom
    glyphs:
    - circle: 
        x: PL
        y: SW
        fill_color: red
        size: 10
        line_color: 
        # use alias to reference the column data source
        source: *fisher

Bokeh_YAML.ipynb