def main():
# Print the ID of the main process
print_process_id()
app = guisupport.get_app_qt4()
# Create an in-process kernel
# >>> print_process_id()
# will print the same process ID as the main process
kernel_manager = QtInProcessKernelManager()
kernel_manager.start_kernel()
kernel = kernel_manager.kernel
kernel.gui = 'qt4'
kernel.shell.push({'foo': 43, 'print_process_id': print_process_id})
kernel_client = kernel_manager.client()
kernel_client.start_channels()
def stop():
kernel_client.stop_channels()
kernel_manager.shutdown_kernel()
app.exit()
control = RichIPythonWidget()
control.kernel_manager = kernel_manager
control.kernel_client = kernel_client
control.exit_requested.connect(stop)
control.show()
guisupport.start_event_loop_qt4(app)
def __init__(self, app, imports=None, *args, **kwargs):
QWidget.__init__(self, *args, **kwargs)
self.app = app
qtapp = self.app.getApp()
kernel = InProcessKernel(gui='qt5')
self.kernel = kernel
self.shell = kernel.shell
# Populate the kernel's namespace.
kernel.shell.push({'api': self.app.api, 'self': self.app, 'shell': kernel.shell})
for plugin in self.app.pm.plugins:
self.shell.push({plugin.name: plugin})
self.push = kernel.shell.push
self.ex = kernel.shell.ex
# Create a kernel manager for the frontend and register it with the kernel.
km = QtInProcessKernelManager(kernel=kernel)
km.start_channels()
kernel.frontends.append(km)
# Create the Qt console frontend.
control = RichIPythonWidget()
control.exit_requested.connect(qtapp.quit)
control.kernel_manager = km
control.show()
self.widget = control
self.imports = [
'from PyQt4.QtCore import *',
'from PyQt4.QtGui import *',
'import json',
'import os, sys'
]
if imports is not None and type(imports) is list:
self.imports.extend(imports)
for import_line in self.imports:
kernel.shell.ex(import_line)
self.setLayout(QVBoxLayout())
self.layout().addWidget(control)
# self.addTab(control, 'Main')
control.clear()
self.app.api.echo = self.echo
self.app.api.echoServerOutput = self.echoServerOutput
self.app.api.setIPInput = self.set_input
self.app.api.pushToIP = self.shell.push
self.app.api.setIPCursor = self.setCursorPos
def main():
app = guisupport.get_app_qt4()
# Create a kernel.
#
# Setting the GUI is not necessary for the normal operation of the kernel,
# but it is used for IPython GUI's integration, particularly in pylab. By
# default, the inline backend is used, which is safe under all toolkits.
#
# WARNING: Under no circumstances should another GUI toolkit, like wx, be
# used when running a Qt application. This will lead to unexpected behavior,
# including segfaults.
kernel = InProcessKernel(gui='qt4')
# Populate the kernel's namespace.
kernel.shell.push({'x': 0, 'y': 1, 'z': 2})
# Create a kernel manager for the frontend and register it with the kernel.
km = QtInProcessKernelManager(kernel=kernel)
km.start_channels()
kernel.frontends.append(km)
# Create the Qt console frontend.
control = RichIPythonWidget()
control.exit_requested.connect(app.quit)
control.kernel_manager = km
control.show()
# Execute some code directly. Note where the output appears.
kernel.shell.run_cell('print "x=%r, y=%r, z=%r" % (x,y,z)')
# Execute some code through the frontend (once the event loop is
# running). Again, note where the output appears.
do_later(control.execute, '%who')
guisupport.start_event_loop_qt4(app)
