def __init__(self, *args, **kwargs):
super(MetaKernel, self).__init__(*args, **kwargs)
if MetaKernel.meta_kernel is None:
MetaKernel.meta_kernel = self
if self.log is None:
# This occurs if we call as a stand-alone kernel
# (eg, not as a process)
# FIXME: take care of input/output, eg StringIO
# make work without a session
self.log = logging.Logger(".metakernel")
else:
# Write has already been set
try:
sys.stdout.write = self.Write
except:
pass # Can't change stdout
self.redirect_to_log = False
self.shell = None
self.sticky_magics = OrderedDict()
self._i = None
self._ii = None
self._iii = None
self._ = None
self.__ = None
self.___ = None
self.max_hist_cache = 1000
self.hist_cache = []
self.comm_manager = CommManager(shell=None, parent=self,
kernel=self)
self.comm_manager.register_target('ipython.widget',
lazy_import_handle_comm_opened)
self.hist_file = get_history_file(self)
self.parser = Parser(self.identifier_regex, self.func_call_regex,
self.magic_prefixes, self.help_suffix)
comm_msg_types = ['comm_open', 'comm_msg', 'comm_close']
for msg_type in comm_msg_types:
self.shell_handlers[msg_type] = getattr(self.comm_manager, msg_type)
self._ipy_formatter = IPythonDisplayFormatter()
self.env = {}
self.reload_magics()
# provide a way to get the current instance
self.set_variable("kernel", self)
# Run command line filenames, if given:
if self.parent is not None and self.parent.extra_args:
level = self.log.level
self.log.setLevel("INFO")
self.redirect_to_log = True
self.Write("Executing files...")
for filename in self.parent.extra_args:
self.Write(" %s..." % filename)
try:
self.do_execute_file(filename)
except Exception as exc:
self.log.info(" %s" % (exc,))
self.Write("Executing files: done!")
self.log.setLevel(level)
self.redirect_to_log = False
def apply(self, expr, args, evaluation):
'Manipulate[expr_, args__]'
if (not _jupyter) or (not Kernel.initialized()) or (Kernel.instance() is None):
return evaluation.message('Manipulate', 'jupyter')
instantiator = _WidgetInstantiator() # knows about the arguments and their widgets
for arg in args.get_sequence():
try:
if not instantiator.add(arg, evaluation): # not a valid argument pattern?
return
except IllegalWidgetArguments as e:
return evaluation.message('Manipulate', 'widgetargs', strip_context(str(e.var)))
except JupyterWidgetError as e:
return evaluation.message('Manipulate', 'widgetmake', e.err)
clear_output_callback = evaluation.output.clear
display_data_callback = evaluation.output.display # for pushing updates
try:
clear_output_callback(wait=True)
except NotImplementedError:
return evaluation.message('Manipulate', 'imathics')
def callback(**kwargs):
clear_output_callback(wait=True)
line_no = evaluation.definitions.get_line_no()
vars = [Expression('Set', Symbol(name), value) for name, value in kwargs.items()]
evaluatable = Expression('ReleaseHold', Expression('Module', Expression('List', *vars), expr))
result = evaluation.evaluate(evaluatable, timeout=settings.TIMEOUT)
if result:
display_data_callback(data=result.result, metadata={})
evaluation.definitions.set_line_no(line_no) # do not increment line_no for manipulate computations
widgets = instantiator.get_widgets()
if len(widgets) > 0:
box = _interactive(instantiator.build_callback(callback), widgets) # create the widget
formatter = IPythonDisplayFormatter()
if not formatter(box): # make the widget appear on the Jupyter notebook
return evaluation.message('Manipulate', 'widgetdisp')
return Symbol('Null') # the interactive output is pushed via kernel.display_data_callback (see above)
def __init__(self, *args, **kwargs):
super(MetaKernel, self).__init__(*args, **kwargs)
if MetaKernel.meta_kernel is None:
MetaKernel.meta_kernel = self
if self.log is None:
# This occurs if we call as a stand-alone kernel
# (eg, not as a process)
# FIXME: take care of input/output, eg StringIO
# make work without a session
self.log = logging.Logger(".metakernel")
else:
# Write has already been set
try:
sys.stdout.write = self.Write
except:
pass # Can't change stdout
self.sticky_magics = {}
self._i = None
self._ii = None
self._iii = None
self._ = None
self.__ = None
self.___ = None
self.max_hist_cache = 1000
self.hist_cache = []
self.comm_manager = CommManager(shell=None, parent=self, kernel=self)
self.comm_manager.register_target('ipython.widget',
lazy_import_handle_comm_opened)
self.plot_settings = dict(backend='inline')
self.hist_file = get_history_file(self)
self.reload_magics()
# provide a way to get the current instance
self.set_variable("kernel", self)
self.parser = Parser(self.identifier_regex, self.func_call_regex,
self.magic_prefixes, self.help_suffix)
self.comm_manager = CommManager(shell=None, parent=self, kernel=self)
self.comm_manager.register_target('ipython.widget',
lazy_import_handle_comm_opened)
comm_msg_types = ['comm_open', 'comm_msg', 'comm_close']
for msg_type in comm_msg_types:
self.shell_handlers[msg_type] = getattr(self.comm_manager,
msg_type)
self._ipy_formatter = IPythonDisplayFormatter()
self.env = {}