dash_proto.m

pyenv('Version','/opt/anaconda3/bin/python3');

pyenv('ExecutionMode','OutOfProcess');

pyenv

dct = py.dict(pyargs('href', 'https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css', ...
        'rel', 'stylesheet', ...
        'integrity', 'sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO', ...
        'crossorigin', 'anonymous' ))
ext_stylesheets = py.list({py.str('https://codepen.io/chriddyp/pen/bWLwgP.css'), dct})

app = py.dash.Dash('__main__',pyargs('external_stylesheets',ext_stylesheets));
dc = py.dict(pyargs("Fruit", {'apple','melon','orange','apple'}, ...
    "Amount", [4 4 5 3], ...
    "City", {'ny','la','sf','sf'}));
df = py.pandas.DataFrame(dc);
fig = py.plotly.express.bar(df,pyargs('x',"Fruit", 'y',"Amount", 'color',"City", 'barmode',"group"));

app.layout = py.dash_html_components.Div(pyargs('children', ...
    {py.dash_html_components.H1(pyargs('children','Hello Dash')), ...
    py.dash_html_components.Div(pyargs('children','Hello')), ...
    py.dash_core_components.Graph(pyargs('id','example-graph','figure',fig) )} )) 

app.run_server(pyargs('debug',false,'use_reloader',false,'port','8057'))