Faster animation than with duration 0

📊 Plotly Python
2

@zazoufumi The first example from Plotly link, you posted, is the oldest example of animation (the code was written just in the day of 2016 when plotly animation was released). At that time it wasn’t quite clear how it works. That example should have been removed from the site long ago.
I updated the first example and now it is very fast:

import plotly.graph_objects as go
import numpy as np
# Generate curve data
t = np.linspace(-1, 1, 100)
x = t + t ** 2
y = t - t ** 2
xm = np.min(x) - 1.5
xM = np.max(x) + 1.5
ym = np.min(y) - 1.5
yM = np.max(y) + 1.5
N = 25
s = np.linspace(-1, 1, N)
xx = s + s ** 2
yy = s - s ** 2


# Create figure
fig = go.Figure(
    data=[go.Scatter(x=x, y=y,
                     mode="lines",
                     line=dict(width=2, color="blue")),
          go.Scatter(x=[xx[0]], y=[yy[0]],
                     mode="markers",
                     marker=dict(color="red", size=10))])
fig.update_layout(width=600, height=450,
        xaxis=dict(range=[xm, xM], autorange=False, zeroline=False),
        yaxis=dict(range=[ym, yM], autorange=False, zeroline=False),
        title_text="Kinematic Generation of a Planar Curve", title_x=0.5, 
        updatemenus = [dict(type = "buttons",
        buttons = [
            dict(
                args = [None, {"frame": {"duration": 10, "redraw": False},
                                "fromcurrent": True, "transition": {"duration": 10}}],
                label = "Play",
                method = "animate",
                 
                )])])
       
fig.update(frames=[go.Frame(
                        data=[go.Scatter(
                                   x=[xx[k]],
                                   y=[yy[k]])],
                        traces=[1]) # fig.data[1] is updated by each frame
        for k in range(N)])

fig.show()
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