Plotly Pie Chart and label order

Question

How to change the order of the labels in the Pie Chart (plotly)?

I want to force this order: 20 16 15

And not 16 15 20

---

My csv file:

id,A,B,C
1,15,16,45
2,20,15,54
3,16,18,60
4,16,15,54
5,15,12,68
6,16,20,68

My python code

import pandas
import plotly.graph_objects as go

col_label = "A"
col_values = "Count"

data = pandas.read_csv(mycsvfile)
v = data[col_label].value_counts()
new = pandas.DataFrame({
    col_label: v.index,
    col_values: v.values
})
fig = go.Figure(
    data=[go.Pie(
        labels=new[col_label],
        values=new[col_values])
    ])
fig.show()

Gives this graph:

Answer 1

There's 2 things:

import pandas
import plotly.graph_objects as go

col_label = "A"
col_values = "Count"

data = pandas.read_csv("mycsvfile")
v = data[col_label].value_counts()
new = pandas.DataFrame({
    col_label: v.index,
    col_values: v.values
})
# First, make sure that the data is in the order you want it to be prior to plotting 
new = new.sort_values(
  by=col_label, 
  ascending=False)

fig = go.Figure(
    data=[go.Pie(
        labels=new[col_label],
        values=new[col_values],
        # Second, make sure that Plotly won't reorder your data while plotting
        sort=False)
    ])
fig.write_html('first_figure.html', auto_open=False)

See this Repl.it for a working demo (it produces the html page with the plot).