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from __future__ import print_function

import time
import datetime

import threading

from IPython.display import display
from ipywidgets import widgets



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def display_dt(duration=5, widget=None, print_dt=False):
    """
    display current time for duration (s)
    """
    time_0 = time.time()
    while time.time() < time_0 + duration:
        dt = datetime.datetime.now().isoformat()
        if print_dt:
            print ("\r{}".format(dt), end="") 
        if widget is not None:
            widget.value = dt
        time.sleep(0.1)
        
    return

display_dt(print_dt=True)



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w = widgets.Text()
w.value = "Hello"
display(w)



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t = threading.Thread(target=display_dt, args=(30,w))
t.start()



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for m in range(100000):
    print ("\r{}".format(m), end="")

Clean up widgets



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assert False



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%%javascript

$('div.widget-area button.close:visible').click();



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