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

Prevent qtconsole frontend freeze on lots of output....

Prevent qtconsole frontend freeze on lots of output. The output from the kernel is now clipped to last `buffer_size` before displaying and a timer is used to flush the pending output text instead of attempting to display text on every stream output from kernel. The timer interval is adjusted based on actual time taken to append a screenful of text to widget. This throttles the widget repaints and avoids choking the Qt event loop leaving time to handle other Qt events. Test cases: In [1]: for i in xrange(1000000): print i In [2]: range(100000) Without this commit the first input causes the qtconsole frontend to freeze, not responding to `Ctrl+C`.

Bernardo B. Marques - - Load All Authors

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             ipy_extutil.py
        
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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')