upstream/ipython Files · IPython/quarantine/ipy_extutil.py

Move crash handling to the application level and simplify class structure....

Move crash handling to the application level and simplify class structure. Starting to try to take real advantage of the refactoring, to have generic crash handling. This also lets us initialize the app without needing all the self.attempt() wrappers, since now there's a good system-wide crash handler at the app level (not inside the shell instance). I didn't yet remove the attempt() method because we may have occasional uses for it (we still do, but in one place only). I also removed some extra class layers that weren't quite needed. Creating classes solely for the purpose of passing parameters makes the code (IMO) harder to understand, I kept getting lost in parts of the class hierarchy. I think these changes provide the same flexibility but with easier to follow code (less things to remember, basically). What I tried to do was to use argument passing instead of inheritance for all cases I saw where the inheritance wasn't really adding new functionality. In some cases, this actually allowed me to remove methods that were effectively duplicated in the subclasses.

Brian Granger - - Load All Authors

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      """ IPython extension management tools.

      After installation, you'll have the 'extutil' object in your namespace.

      to.

      """

      # for the purposes of this module, every module that has the name 'ip' globally

      # installed as below is an IPython extension

      from IPython.core import ipapi

      ip = ipapi.get()

      from IPython.core.iplib import InteractiveShell

      import sys,textwrap,inspect

      def indent(s, ind= '    '):

          return '\n'.join([ind +l for l in s.splitlines()])

      class ExtUtil:

          """ IPython extensios (ipy_* etc.) management utilities """

          def describe(self):

              for n,mod in self._active():

                  doc = inspect.getdoc(mod)

                  if doc:

                      print '== %s ==' % n

                      print indent(doc)

          def ls(self):

              """ Show list of installed extensions. """

              for n,m in self._active():

                  print '%-20s %s' % (n,m.__file__.replace('\\','/'))

          def _active(self):

              act = []

              for mname,m in sys.modules.items():

                  o = getattr(m, 'ip', None)

                  if isinstance(o, InteractiveShell):

                      act.append((mname,m))

              act.sort()                

              return act

      extutil = ExtUtil()                

      ip.push('extutil')

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				""" IPython extension management tools.

				After installation, you'll have the 'extutil' object in your namespace.
				to.
				"""

				# for the purposes of this module, every module that has the name 'ip' globally
				# installed as below is an IPython extension

				from IPython.core import ipapi
				ip = ipapi.get()
				from IPython.core.iplib import InteractiveShell

				import sys,textwrap,inspect

				def indent(s, ind= ' '):
				return '\n'.join([ind +l for l in s.splitlines()])

				class ExtUtil:
				""" IPython extensios (ipy_* etc.) management utilities """

				def describe(self):
				for n,mod in self._active():
				doc = inspect.getdoc(mod)
				if doc:
				print '== %s ==' % n
				print indent(doc)


				def ls(self):
				""" Show list of installed extensions. """
				for n,m in self._active():
				print '%-20s %s' % (n,m.__file__.replace('\\','/'))
				def _active(self):
				act = []
				for mname,m in sys.modules.items():
				o = getattr(m, 'ip', None)
				if isinstance(o, InteractiveShell):
				act.append((mname,m))
				act.sort()
				return act

				extutil = ExtUtil()
				ip.push('extutil')