带服务员的Python Dash服务器
我有一个用Dash框架编写的仪表板应用程序。 它还使用flask编写了一些Restful API。 我正在向Dash服务器添加flask应用程序,如下所示带服务员的Python Dash服务器,python,python-3.x,flask,plotly-dash,waitress,Python,Python 3.x,Flask,Plotly Dash,Waitress,我有一个用Dash框架编写的仪表板应用程序。 它还使用flask编写了一些Restful API。 我正在向Dash服务器添加flask应用程序,如下所示 import dash import flask import dash_bootstrap_components as dbc flask_server = flask.Flask(__name__) app = dash.Dash(__name__,server=flask_server, external_stylesheets=[d
import dash
import flask
import dash_bootstrap_components as dbc
flask_server = flask.Flask(__name__)
app = dash.Dash(__name__,server=flask_server, external_stylesheets=[dbc.themes.BOOTSTRAP])
我正在运行服务器
from dashboard import app
from waitress import serve
if __name__ == "__main__":
app.title = 'Litmus'
app.run_server(debug=False)
# serve(app,host="0.0.0.0",port=8050)
当我使用app.run_server(debug=False)
时,上面的代码可以正常工作,但当我使用waitess运行服务器时,它会抛出异常。
当我使用下列行时
#app.run_server(debug=False)
serve(app,host="0.0.0.0",port=8050)
我得到以下错误
ERROR:waitress:Exception while serving /
Traceback (most recent call last):
File "C:\Users\litmus\AppData\Roaming\Python\Python38\site-packages\waitress\channel.py", line 397, in service
task.service()
File "C:\Users\litmus\AppData\Roaming\Python\Python38\site-packages\waitress\task.py", line 168, in service
self.execute()
File "C:\Users\litmus\AppData\Roaming\Python\Python38\site-packages\waitress\task.py", line 434, in execute
app_iter = self.channel.server.application(environ, start_response)
TypeError: 'Dash' object is not callable
ERROR:waitress:Exception while serving /favicon.ico
Traceback (most recent call last):
File "C:\Users\litmus\AppData\Roaming\Python\Python38\site-packages\waitress\channel.py", line 397, in service
task.service()
File "C:\Users\litmus\AppData\Roaming\Python\Python38\site-packages\waitress\task.py", line 168, in service
self.execute()
File "C:\Users\litmus\AppData\Roaming\Python\Python38\site-packages\waitress\task.py", line 434, in execute
app_iter = self.channel.server.application(environ, start_response)
TypeError: 'Dash' object is not callable
它不起作用,因为您正在将Dash应用程序而不是Flask应用程序传递到
服务
因此,与此相反:
serve(app,host="0.0.0.0",port=8050)
按如下方式传递Flask应用程序实例:
serve(app.server, host="0.0.0.0", port=8050)