def startLoop():
"""
Use nested asyncio event loop for Jupyter notebooks.
This is not needed anymore in Jupyter versions 5 or higher.
"""
def _ipython_loop_asyncio(kernel):
"""Use asyncio event loop for the given IPython kernel."""
loop = asyncio.get_event_loop()
def kernel_handler():
kernel.do_one_iteration()
loop.call_later(kernel._poll_interval, kernel_handler)
loop.call_soon(kernel_handler)
try:
if not loop.is_running():
loop.run_forever()
finally:
if not loop.is_running():
loop.run_until_complete(loop.shutdown_asyncgens())
loop.close()
patchAsyncio()
loop = asyncio.get_event_loop()
if not loop.is_running():
from ipykernel.eventloops import register_integration, enable_gui
register_integration('asyncio')(_ipython_loop_asyncio)
enable_gui('asyncio')
def enable_gui(self, gui=None):
"""Enable GUI integration for the kernel."""
from ipykernel.eventloops import enable_gui
if not gui:
gui = self.kernel.gui
enable_gui(gui, kernel=self.kernel)
self.active_eventloop = gui
def startLoop():
"""
Use asyncio event loop for Jupyter notebooks.
"""
patchAsyncio()
from ipykernel.eventloops import register_integration, enable_gui
@register_integration('asyncio')
def loop_asyncio(kernel):
'''
Start a kernel with asyncio event loop support.
'''
loop = asyncio.get_event_loop()
def kernel_handler():
kernel.do_one_iteration()
loop.call_later(kernel._poll_interval, kernel_handler)
loop.call_soon(kernel_handler)
try:
if not loop.is_running():
loop.run_forever()
finally:
loop.run_until_complete(loop.shutdown_asyncgens())
loop.close()
enable_gui('asyncio')
def startLoop():
"""
Use asyncio event loop for Jupyter notebooks.
"""
patchAsyncio()
from ipykernel.eventloops import register_integration, enable_gui
register_integration('asyncio')(_ipython_loop_asyncio)
enable_gui('asyncio')
def startLoop():
"""
Use asyncio event loop for Jupyter notebooks.
"""
patchAsyncio()
loop = asyncio.get_event_loop()
if not loop.is_running():
from ipykernel.eventloops import register_integration, enable_gui
register_integration('asyncio')(_ipython_loop_asyncio)
enable_gui('asyncio')
have_ipython = False
try:
get_ipython()
have_ipython = True
except:
pass
if have_ipython:
import asyncio
import itertools
from ipykernel.eventloops import register_integration, enable_gui
@register_integration('asyncio')
def loop_asyncio(kernel):
'''Start a kernel with asyncio event loop support.'''
loop = asyncio.get_event_loop()
def kernel_handler():
loop.call_soon(kernel.do_one_iteration)
loop.call_later(kernel._poll_interval, kernel_handler)
loop.call_soon(kernel_handler)
try:
if not loop.is_running():
loop.run_forever()
finally:
loop.close()
print('[ipyloop] Started event loop')
enable_gui('asyncio')
