import plotly.graph_objects as go
import plotly.io as pio
import numpy as np
# Create template with updatemenus and annotations
my_template = go.layout.Template(
 layout=dict(
 updatemenus=[
 dict(
 buttons=[
 dict(
 label="View 1",
 method="relayout",
 args=[{"scene.camera.eye": dict(x=1, y=1, z=1)}],
 ),
 ],
 direction="down",
 showactive=True,
 x=0.1,
 y=1.1,
 ),
 ],
 annotations=[
 dict(
 text="Test annotation",
 x=0.5,
 y=1.1,
 xref="paper",
 yref="paper",
 showarrow=False,
 ),
 ],
 paper_bgcolor="rgb(240,240,240)", # This works correctly
 )
)
# Register template
pio.templates["my_template"] = my_template
# Create figure with template
fig = go.Figure(
 data=[go.Scatter3d(
 x=np.random.normal(0, 1, 100),
 y=np.random.normal(0, 1, 100),
 z=np.random.normal(0, 1, 100),
 mode="markers",
 )]
)
fig.update_layout(template="my_template")
# Check results
print("Template updatemenus length:", len(my_template.layout.updatemenus)) # 1
print("Figure updatemenus length:", len(fig.layout.updatemenus)) # 0
print("Template annotations length:", len(my_template.layout.annotations)) # 1
print("Figure annotations length:", len(fig.layout.annotations)) # 0

fig.update_layout(
 updatemenus=my_template.layout.updatemenus,
 annotations=my_template.layout.annotations,
)