from IPython.html.widgets import interact

x = True
while True:
    x = not x
    get_ipython().kernel.do_one_iteration()

x

from IPython.display import display, clear_output
import time

dy = 0.0

y = 0.0
while True:
    y += dy * 0.1
    clear_output()
    display(y)
    get_ipython().kernel.do_one_iteration()
    time.sleep(0.1)

@interact
def foo(arg=1):
    global dy
    dy = arg

a, b = 0, 0

while True:
    b = a % 10
    get_ipython().kernel.do_one_iteration()

while True:
    a += 1
    get_ipython().kernel.do_one_iteration()
    clear_output()
    display(b)
    time.sleep(0.05) # Not strictly necessary, but try to keep load down

active = set()
    
def parallel(coroutine):
    """
    Mark a function for parallel execution.
    Works as a decorator, too
    """
    active.add(coroutine())
    return coroutine
    
def remove_all():
    active.clear()

while True:
    for act in active:
        next(act)
    get_ipython().kernel.do_one_iteration()
    time.sleep(0.05)

a, b = 0, 0

def foo():
    global a, b
    while True:
        b = a % 10
        yield
parallel(foo)

@parallel
def bar():
    global a, b
    while True:
        a += 1
        clear_output()
        display(b)
        yield