如何从 plotly 快速条形图 hover 数据中删除计数？

Question

Given the following code:

import pandas as pd
import plotly.express as px

d = {'col1': ['a', 'a', 'b', 'b', 'b'], 'col2': [5, 6, 7, 8, 9]}
df = pd.DataFrame(data=d)
fig = px.bar(df, y='col1', color='col1')
fig.show()

that generates the following bar plot:

how do I remove count from hover_data?

plotly==5.1.0

Answer 1

You can remove it from hovertemplate

import pandas as pd
import plotly.express as px

d = {'col1': ['a', 'a', 'b', 'b', 'b'], 'col2': [5, 6, 7, 8, 9]}
df = pd.DataFrame(data=d)
fig = px.bar(df, y='col1', color='col1').update_traces(hovertemplate='col1=%{y}<br><extra></extra>')
fig.show()