使用plotly-dash上传文件

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

app = dash.Dash(__name__)

app.layout = html.Div([
    dcc.Upload(
        id='upload-data',
        children=html.Div([
            '拖拽或',
            html.A('选择文件')
        ]),
        style={
            'width': '100%',
            'height': '60px',
            'lineHeight': '60px',
            'borderWidth': '1px',
            'borderStyle': 'dashed',
            'borderRadius': '5px',
            'textAlign': 'center',
            'margin': '10px'
        },
        multiple=True
    ),
    html.Div(id='output-data-upload')
])

@app.callback(Output('output-data-upload', 'children'),
              Input('upload-data', 'contents'),
              Input('upload-data', 'filename'))
def update_output(contents, filename):
    if contents is not None:
        # 在这里进行文件处理的逻辑
        return html.Div([
            html.H5(filename),
            html.H6(datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S'))
        ])
    else:
        return None

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