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Make traitlets notify check more robust against classes redefining equality and bool...
Make traitlets notify check more robust against classes redefining equality and bool Before this change, numpy arrays caused problems since comparing two numpy arrays returns an array of truth values, rather than a single truth value. This change guards against redefining the semantics of comparison by notifying on a trait change if the equality comparison returns anything other than an explicit True value.

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clientabc.py
80 lines | 2.1 KiB | text/x-python | PythonLexer
"""Abstract base class for kernel clients"""
#-----------------------------------------------------------------------------
# Copyright (C) 2013 The IPython Development Team
#
# Distributed under the terms of the BSD License. The full license is in
# the file COPYING, distributed as part of this software.
#-----------------------------------------------------------------------------
#-----------------------------------------------------------------------------
# Imports
#-----------------------------------------------------------------------------
import abc
from IPython.utils.py3compat import with_metaclass
#-----------------------------------------------------------------------------
# Main kernel client class
#-----------------------------------------------------------------------------
class KernelClientABC(with_metaclass(abc.ABCMeta, object)):
"""KernelManager ABC.
The docstrings for this class can be found in the base implementation:
`IPython.kernel.client.KernelClient`
"""
@abc.abstractproperty
def kernel(self):
pass
@abc.abstractproperty
def shell_channel_class(self):
pass
@abc.abstractproperty
def iopub_channel_class(self):
pass
@abc.abstractproperty
def hb_channel_class(self):
pass
@abc.abstractproperty
def stdin_channel_class(self):
pass
#--------------------------------------------------------------------------
# Channel management methods
#--------------------------------------------------------------------------
@abc.abstractmethod
def start_channels(self, shell=True, iopub=True, stdin=True, hb=True):
pass
@abc.abstractmethod
def stop_channels(self):
pass
@abc.abstractproperty
def channels_running(self):
pass
@abc.abstractproperty
def shell_channel(self):
pass
@abc.abstractproperty
def iopub_channel(self):
pass
@abc.abstractproperty
def stdin_channel(self):
pass
@abc.abstractproperty
def hb_channel(self):
pass