plotly绘制气泡图的问题

[wokaoyan1981]

运行下面的程序报错了，错误应该在layout里面。请帮忙查找错误并修改。

import plotly as py
import plotly.graph_objs as go

pyplt = py.offline.plot

trace0 = go.Scatter(
    x=[1991, 1992, 1993, 1994, 1995, 1996, 1997],
    y=['US','US','US','US','US','US','US'],
    mode='markers',
    marker=dict(
        color='rgb(150,204,90)',
        size=[10, 14, 16, 18, 20, 42, 64],
        showscale=False,
    )
)

trace1 = go.Scatter(
    x=[1991, 1992, 1993, 1994, 1995, 1996, 1997],
    y=['JAPAN','JAPAN','JAPAN','JAPAN','JAPAN','JAPAN','JAPAN'],
    mode='markers',
    marker=dict(
        color = 'rgb(200,150,100)',
        size=[100, 30, 70, 85, 30, 42, 64],
        showscale = False,
    )
)
layout = go.Layout(
    title="output of grapes per year in US and Japan",
    xaxis=dict(
        showgrid=True,
        showline=True,
        linecolor='rgb(102,102,102)',
        titlefont=dict(
            color='rgb(204,204,204)',
        ),
        tickfont=dict(
            color='rgb(102,102,102)',
        ),
        dtick=1,
        ticks='outside',
        tickcolor='rgb(102,102,102)',
    ),
    margin=dict(
        l=140,
        r=40,
        b=50,
        t=80,
    ),
    legend=dict(
        font=dict(
            size=10,
        ),
        yanchor='middle',
        xanchor='right',
    ),
    width=800,
    height=600,
    paper_bgcolor='rgb(254,247,234)',
    plot_bgcolor='rgb(254,247,234)',
    hovermode='closest',
)

data=[trace0, trace1, layout]
pyplt(data, filename='test.html')

[wokaoyan1981]

layout里面没有错误，是pyplt错了。问题已解决。