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name : managerabc.py
 """Abstract base class for kernel managers."""

# Copyright (c) IPython Development Team.
# Distributed under the terms of the Modified BSD License.

import abc

from IPython.utils.py3compat import with_metaclass


class KernelManagerABC(with_metaclass(abc.ABCMeta, object)):
    """KernelManager ABC.

    The docstrings for this class can be found in the base implementation:

    `IPython.kernel.kernelmanager.KernelManager`
    """

    @abc.abstractproperty
    def kernel(self):
        pass

    #--------------------------------------------------------------------------
    # Kernel management
    #--------------------------------------------------------------------------

    @abc.abstractmethod
    def start_kernel(self, **kw):
        pass

    @abc.abstractmethod
    def shutdown_kernel(self, now=False, restart=False):
        pass

    @abc.abstractmethod
    def restart_kernel(self, now=False, **kw):
        pass

    @abc.abstractproperty
    def has_kernel(self):
        pass

    @abc.abstractmethod
    def interrupt_kernel(self):
        pass

    @abc.abstractmethod
    def signal_kernel(self, signum):
        pass

    @abc.abstractmethod
    def is_alive(self):
        pass
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