upstream/ipython Files · IPython/kernel/managerabc.py

Store timestamps for modules to autoreload...

Store timestamps for modules to autoreload Closes gh-4127 At present, autoreload compares the timestamps on .py and .pyc files. However, this can fail in a couple of ways (see gh-4127). With this change, it caches the mtime of the .py file when we loaded it. Some extra complexity is needed to store the mtime as soon as possible - we scan sys.modules when autoreload is loaded, and register a post_execute hook to check for newly imported modules after each cell.

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

      #-----------------------------------------------------------------------------

      #  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.

      #-----------------------------------------------------------------------------

      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

          @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

          #--------------------------------------------------------------------------

          # 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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				"""Abstract base class for kernel managers."""

				#-----------------------------------------------------------------------------
				# 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.
				#-----------------------------------------------------------------------------

				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

				@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

				#--------------------------------------------------------------------------
				# 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