import plotly.graph_objects as go  
fig = go.Figure(
    data=[go.Bar(x=[1, 2, 3], y=[1, 3, 2])],
    layout=go.Layout(
        title=go.layout.Title(text="A Bar Chart")
    )
)

import plotly.express as px   
df = px.data.iris()
fig = px.scatter(df, x="sepal_width", y="sepal_length", color="species", facet_col="species", trendline="ols", title="Iris Dataset")

import plotly.figure_factory as ff  
x1,y1 = np.meshgrid(np.arange(0, 2, .2), np.arange(0, 2, .2))
u1 = np.cos(x1)*y1
v1 = np.sin(x1)*y1
fig = ff.create_quiver(x1, y1, u1, v1)

from plotly.subplots import make_subplots
fig = make_subplots(rows=1, cols=2)
fig.add_trace(go.Scatter(y=[4, 2, 1], mode="lines"), row=1, col=1)
fig.add_trace(go.Bar(y=[2, 1, 3]), row=1, col=2)

add_trace()
update_layout()
update_traces()
update_xaxes()
update_yaxes()