I want to iterate over a plotly color scale so I can create a list of colors to apply to each of my 22 line graphs. I’m plotting this using Streamlit. This is my code below:
import plotly.express as px import streamlit as st cmap = px.colors.sequential.Viridis color_scale = [cmap[i % 256] for i in range(22)] fig = px.line(df, x='Month', y='Sum', color='group', color_discrete_sequence=color_scale) fig.update_layout( title='Sum of ', xaxis_title='Month', yaxis_title='Views over time' ) st.plotly_chart(fig, use_container_width=True)
I’m getting the error : ‘[cmap[i % 256] for i in range(22)], IndexError: list index out of range’ when I run the code. I know this means the list cmap has fewer colors/items than 22, but I divided i by a large number to keep the index within bounds and still I get the same error. How can I fix this?