How to hide legend with Plotly Express and Plotly

The issue with your original code is that fig.update() doesn't take fig as an argument. That line could just be fig.update(layout_showlegend=False)

After creating the figure in plotly, to disable the legend you can make use of this command:

fig.update_layout(showlegend=False)

For Advanced users: You can also enable/disable the legend for individual traces in a figure by setting the showlegend property of each trace. For instance:

fig.add_trace(go.Scatter(
    x=[1, 2],
    y=[1, 2],
    showlegend=False))

You can view the examples here: https://plotly.com/python/legend/

try this:

my_data = [go.Bar( x = df.Publisher, y = df.Views)]
my_layout = go.Layout({"title": "Views by publisher",
                       "yaxis": {"title":"Views"},
                       "xaxis": {"title":"Publisher"},
                       "showlegend": False})

fig = go.Figure(data = my_data, layout = my_layout)

py.iplot(fig)

• the argument showlegend is part of layout object which you did not specify in your code
• The code may also work if you do not wrap the layout object my_layout inside a go.Layout(). It could work by simply keeping my_layout a dictionary
• as for plotly.express, try fig.update_layout(showlegend=False). All the arguments are the same. Accessing them varies slightly.

Hope it works for you.