def get_kernel_pointer(buffer):
lisp.message("getting kernel for " + buffer)
if buffer not in kernels:
lisp.message("creating new " + buffer)
km = InProcessKernelManager()
km.start_kernel()
kc = BlockingInProcessKernelClient(kernel=km.kernel)
kc.start_channels()
kernel = InProcessKernel()
kernels[buffer] = (kc, kernel, kernel.shell.get_ipython())
# run this so that plt, np pointers are ready
kc.shell_channel.execute('%pylab inline')
return kernels[buffer]
def test_stdout(self):
""" Does the in-process kernel correctly capture IO?
"""
kernel = InProcessKernel()
with capture_output() as io:
kernel.shell.run_cell('print("foo")')
self.assertEqual(io.stdout, 'foo\n')
kc = BlockingInProcessKernelClient(kernel=kernel)
kernel.frontends.append(kc)
kc.shell_channel.execute('print("bar")')
msg = get_stream_message(kc)
self.assertEqual(msg['content']['text'], 'bar\n')
def test_stdout(self):
""" Does the in-process kernel correctly capture IO?
"""
kernel = InProcessKernel()
with capture_output() as io:
kernel.shell.run_cell('print("foo")')
self.assertEqual(io.stdout, 'foo\n')
kc = BlockingInProcessKernelClient(kernel=kernel)
kernel.frontends.append(kc)
kc.execute('print("bar")')
out, err = assemble_output(kc.iopub_channel)
self.assertEqual(out, 'bar\n')
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)
def start_kernel(self, **kwds):
from IPython.kernel.inprocess.ipkernel import InProcessKernel
self.kernel = InProcessKernel()
def start_kernel(self, **kwds):
from IPython.kernel.inprocess.ipkernel import InProcessKernel
self.kernel = InProcessKernel(parent=self, session=self.session)
