PYTHON

Plotly set axes labels

import plotly.express as px

df = px.data.iris()
fig = px.scatter(df, x="sepal_length", y="sepal_width", color="species",
                 labels={
                     "sepal_length": "Sepal Length (cm)",
                     "sepal_width": "Sepal Width (cm)",
                     "species": "Species of Iris"
                 },
                title="Manually Specified Labels")
fig.show()

plotly go axis labels

import plotly.graph_objects as go

fig = go.Figure(go.Scatter(
    y = [4, 1, 3],
    x = ["December", "January", "February"]))

# set x axis label
fig.update_xaxes( 
        title_text = "Month", # label
        title_font = {"size": 20},
        title_standoff = 25)

# set y axis label
fig.update_yaxes(
        title_text = "Temperature", # label
        title_standoff = 25)

fig.show()