upstream/ipython Files · IPython/html/fabfile.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`.

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             fabfile.py
        
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      """ fabfile to prepare the notebook """

      from fabric.api import local,lcd

      from fabric.utils import abort

      import os

      pjoin = os.path.join

      static_dir = 'static'

      components_dir = os.path.join(static_dir, 'components')

      def css(minify=True, verbose=False):

          """generate the css from less files"""

          for name in ('style', 'ipython'):

              source = pjoin('style', "%s.less" % name)

              target = pjoin('style', "%s.min.css" % name)

              _compile_less(source, target, minify, verbose)

      def _to_bool(b):

          if not b in ['True', 'False', True, False]:

              abort('boolean expected, got: %s' % b)

          return (b in ['True', True])

      def _compile_less(source, target, minify=True, verbose=False):

          """Compile a less file by source and target relative to static_dir"""

          minify = _to_bool(minify)

          verbose = _to_bool(verbose)

          min_flag = '-x' if minify is True else ''

          ver_flag = '--verbose' if verbose is True else ''

          lessc = os.path.join('components', 'less.js', 'bin', 'lessc')

          with lcd(static_dir):

              local('{lessc} {min_flag} {ver_flag} {source} {target}'.format(**locals()))

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				""" fabfile to prepare the notebook """

				from fabric.api import local,lcd
				from fabric.utils import abort
				import os

				pjoin = os.path.join
				static_dir = 'static'
				components_dir = os.path.join(static_dir, 'components')


				def css(minify=True, verbose=False):
				"""generate the css from less files"""
				for name in ('style', 'ipython'):
				source = pjoin('style', "%s.less" % name)
				target = pjoin('style', "%s.min.css" % name)
				_compile_less(source, target, minify, verbose)

				def _to_bool(b):
				if not b in ['True', 'False', True, False]:
				abort('boolean expected, got: %s' % b)
				return (b in ['True', True])

				def _compile_less(source, target, minify=True, verbose=False):
				"""Compile a less file by source and target relative to static_dir"""
				minify = _to_bool(minify)
				verbose = _to_bool(verbose)
				min_flag = '-x' if minify is True else ''
				ver_flag = '--verbose' if verbose is True else ''
				lessc = os.path.join('components', 'less.js', 'bin', 'lessc')
				with lcd(static_dir):
				local('{lessc} {min_flag} {ver_flag} {source} {target}'.format(**locals()))