我尝试使用Shapelets，我尝试了altair示例，但我遇到了一个问题：从shapelets.apps导入DataApp时，它说规范不存在，TypeError：Widget.init（）获得了意外的关键字参数'spec'

import altair as alt
import pandas as pd

app = DataApp(name=""altair example"")

# Define the data source
source = pd.DataFrame({'Horsepower': [130, 165, 150, 150, 140, 198],
                       'Miles_per_Gallon': [27.0, 28.0, 25.0, 25.0, 27.0, 17.0],
                       'Origin': ['USA', 'USA', 'USA', 'USA', 'USA', 'Europe'],
                       'Name': ['mazda rx4', 'mazda rx4 wag', 'datsun 710', 'hornet 4 drive', 'hornet sportabout', 'volvo 142e']})

# Define the Altair chart
spec = alt.Chart(source).mark_circle(size=60).encode(
    x='Horsepower',
    y='Miles_per_Gallon',
    color='Origin',
    tooltip=['Name', 'Origin', 'Horsepower', 'Miles_per_Gallon']
).interactive()

# Create the Altair chart component
altair_chart = app.altair_chart(title='Altair Chart 2', spec=spec)

# Add the chart to the app
app.place(altair_chart)

# Register the app
app.register()"

有人能帮我吗？我会很感激的