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"""An example of embedding a RichJupyterWidget in a PyQT Application.
This uses a normal kernel launched as a subprocess. It shows how to shutdown
the kernel cleanly when the application quits.
To run:
python3 embed_qtconsole.py
"""
import sys
from qtpy import QtWidgets
from qtconsole.rich_jupyter_widget import RichJupyterWidget
from qtconsole.manager import QtKernelManager
# The ID of an installed kernel, e.g. 'bash' or 'ir'.
USE_KERNEL = 'python3'
def make_jupyter_widget_with_kernel():
"""Start a kernel, connect to it, and create a RichJupyterWidget to use it
"""
kernel_manager = QtKernelManager(kernel_name=USE_KERNEL)
kernel_manager.start_kernel()
kernel_client = kernel_manager.client()
kernel_client.start_channels()
jupyter_widget = RichJupyterWidget()
jupyter_widget.kernel_manager = kernel_manager
jupyter_widget.kernel_client = kernel_client
return jupyter_widget
class MainWindow(QtWidgets.QMainWindow):
"""A window that contains a single Qt console."""
def __init__(self):
super().__init__()
self.jupyter_widget = make_jupyter_widget_with_kernel()
self.setCentralWidget(self.jupyter_widget)
def shutdown_kernel(self):
print('Shutting down kernel...')
self.jupyter_widget.kernel_client.stop_channels()
self.jupyter_widget.kernel_manager.shutdown_kernel()
if __name__ == "__main__":
app = QtWidgets.QApplication(sys.argv)
window = MainWindow()
window.show()
app.aboutToQuit.connect(window.shutdown_kernel)
sys.exit(app.exec_())
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