Save ipywidgets arguments to dictionary and create ipywidgets from dictionary containing arguments

Widgets
1

pickle.dump does not save ipywidgets. I tried to use get_state and send_state , but it does not work. How to solve it?

w_is =  widgets.IntSlider(
        value=7,
        min=0,
        max=10,
        step=1,
        description='Test:',
        disabled=False,
        continuous_update=False,
        orientation='horizontal',
        readout=True,
        readout_format='d'
        )

# pickle.dump(w_is,open('w_is.pkl','wb'))
# PicklingError: Can't pickle <function <lambda> at 0x0000023391B3FEE0>: attribute lookup <lambda> on jupyter_client.session failed

w_is_state = w_is.get_state()
pickle.dump(w_is_state,open('w_is_state.pkl','wb'))
w_is_state = pickle.load(open('w_is_state.pkl','rb'))
type(w_is_state) # dict

w_is_new = widgets.IntSlider()
w_is_new.send_state(w_is_state)
w_is_new # does not recieve arguments from w_is_state