Python Plotly: Coloring go.Scatter lines according to separate array value

HI @sean412 welcome to the forums.

If you change to mode='lines+markers you will see, that the markers are colored depending on their value. The thing is, that you want to color the lines which can be done via line=dict(color=your_discrete_color)
You can specify only one color per line.

If you want to use the viridis colorscale for the line colors, you’ll hav to convert it to a discrete values, here an example:

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