##// END OF EJS Templates
Cleaned up KernelManager interface and clarified documentation.
Cleaned up KernelManager interface and clarified documentation.

File last commit:

r2631:213c29c4
r2631:213c29c4
Show More
ipython_widget.py
82 lines | 2.8 KiB | text/x-python | PythonLexer
# System library imports
from PyQt4 import QtCore, QtGui
# Local imports
from frontend_widget import FrontendWidget
class IPythonWidget(FrontendWidget):
""" A FrontendWidget for an IPython kernel.
"""
#---------------------------------------------------------------------------
# 'FrontendWidget' interface
#---------------------------------------------------------------------------
def __init__(self, kernel_manager, parent=None):
super(IPythonWidget, self).__init__(kernel_manager, parent)
self._magic_overrides = {}
def execute_source(self, source, hidden=False, interactive=False):
""" Reimplemented to override magic commands.
"""
magic_source = source.strip()
if magic_source.startswith('%'):
magic_source = magic_source[1:]
magic, sep, arguments = magic_source.partition(' ')
if not magic:
magic = magic_source
callback = self._magic_overrides.get(magic)
if callback:
output = callback(arguments)
if output:
self.appendPlainText(output)
self._show_prompt('>>> ')
return True
else:
return super(IPythonWidget, self).execute_source(source, hidden,
interactive)
#---------------------------------------------------------------------------
# 'IPythonWidget' interface
#---------------------------------------------------------------------------
def set_magic_override(self, magic, callback):
""" Overrides an IPython magic command. This magic will be intercepted
by the frontend rather than passed on to the kernel and 'callback'
will be called with a single argument: a string of argument(s) for
the magic. The callback can (optionally) return text to print to the
console.
"""
self._magic_overrides[magic] = callback
def remove_magic_override(self, magic):
""" Removes the override for the specified magic, if there is one.
"""
try:
del self._magic_overrides[magic]
except KeyError:
pass
if __name__ == '__main__':
import sys
from IPython.frontend.qt.kernelmanager import QtKernelManager
# Create KernelManager
kernel_manager = QtKernelManager(xreq_address = ('127.0.0.1', 5575),
sub_address = ('127.0.0.1', 5576),
rep_address = ('127.0.0.1', 5577))
kernel_manager.sub_channel.start()
kernel_manager.xreq_channel.start()
# Launch application
app = QtGui.QApplication(sys.argv)
widget = IPythonWidget(kernel_manager)
widget.setWindowTitle('Python')
widget.resize(640, 480)
widget.show()
sys.exit(app.exec_())