Dash error : 'dash_core_components' has no attribute 'send dataframe'

Question

在我的破折号中，我有一个回调创建了一个 pd.to_dict 对象，该对象与 dcc.Store 一起存储，以便用于进一步的绘图。

我正在尝试创建一个下载按钮来下载这个创建的数据框。

这是我的代码的一部分（删除了其他导入或布局选项）：

import dash
import dash_core_components as dcc
import dash_html_components as html
from dash.dependencies import Input, Output, State


app = dash.Dash(__name__)

app.layout = html.Div([
        html.H2('Enter a text query'),
        dcc.Store(id='memory'),
        html.Button('Submit', id='button', n_clicks=0),
        html.Button("Download CSV", id="csv"),
        dcc.Download(id="download-df")])

@app.callback(
    Output('memory', 'data'),
    [Input('button', 'n_clicks')],
    [State('searchterm', 'value')]

)

def create_df_func(n_clicks, searchterm):
    #some code to create df
        return df.to_dict(orient='records')


@app.callback(
    Output('download-df', 'data'),
    [Input('csv', 'n_clicks')],
    [State('memory', 'data')],
    prevent_initial_call=True,
)
def download_csv(n_clicks, df):
    data = pd.DataFrame(df)
    return dcc.send_data_frame(data.to_csv, "mydf.csv")


if __name__ == '__main__':
    app.run_server(debug=True)

但是当运行和 app.py 时，我得到 'dash_core_components' has no attribute 'send dataframe'，即使它有。

我有 dash 版本 2.0.0。

Answer 1

I have dash version 2.0.0

替换您从中导入破折号核心组件的方式

import dash_core_components as dcc

至此

from dash import dcc

As of Dash 2, the development of dash-core-components has been moved to the main Dash repo

quote source

Dash error : 'dash_core_components' has no attribute 'send dataframe'

Dash error : 'dash_core_components' has no attribute 'send dataframe'

python

plotly-dash