Jupyter: Get multi-line input from user

Question

I tried for several hours to get solution to my basic question with out success. How can I get in Jupyter, multi-line input from user (Python3)? Pay attention that the question is regard to user input in Jupyter.

I have been try:

1. widgets.Text:

   from IPython.display import display
   text = widgets.Text()
   display(text)
   button = widgets.Button(description="Send")
   display(button)
   
   def on_button_clicked(b):
       print(text.value)
   
   button.on_click(on_button_clicked)`
   

2. Special keys:

   print ("Enter/Paste your content. Ctrl-D to save it.")
   contents = []
   line = "vv"
   while line != "":
       try:
           line = input("")
       except EOFError:
           break
       contents.append(line)
   

and more..

Thanks for you time and help, Oran