push_notebook does not work in Google Collab Jupyter Notebook - jupyter-notebook

Question

I am using bokeh on Google collab. I wonder if anybody has used push_notebook in Google Collab Jupyter notebook. I am trying to run following code in Jupiter Notebook on Google Collab , but it get stuck on push_notebook() command
from ipywidgets import interact
import numpy as np
from bokeh.io import push_notebook,show,output_notebook
from bokeh.plotting import figure
output_notebook()
x=np.linspace(0,2*np.pi,2000)
y=np.sin(x)
p=figure(title="ff",plot_height=300,plot_width=600,y_range=(-5,5))
r=p.line(x,y,color="red",line_width=2)
def update(f,w=1,A=1,phi=0):
print("fff")
if f== "sin":func=np.sin
if f== "sin":func=np.sin
elif f=="cos":func =np.cos
elif f== "tan":func=np.tan
r.data_source.data['y']=A*func(w*x+phi)
push_notebook()
show(p,notebook_handle=True)
interact(update,f=["sin","cos","tan"],w=(0,100),A=(1,5),phi=(0,20,0.1))
Can anybody suggest whats wrong in the code and how can it be run Google Collab.

Answer 1

push_notebook does not and cannot work on Google Collab due to the fact that Google's notebook implementation will not allow the necessary websocket connections to be opened. There is nothing that can be done about this until/unless Google makes changes on their end.
ref: https://github.com/bokeh/bokeh/issues/9302