content: import numpy
  has_matplotlib = True
  try:
      from matplotlib import pyplot, figure
  except ImportError:
      has_matplotlib = False 
  
  from dagpype._core import filters
  
  
  def _make_relay_call(fn, name):
      def new_fn(*args, **kwargs):
          @filters
          def _dagpype_internal_fn_act(target):
              try:
                  while True:
                      target.send((yield))
              except GeneratorExit:
                  fn(*args, **kwargs)
                  target.close()
  
          return _dagpype_internal_fn_act
  
      new_fn.__name__ = name
      new_fn.__doc__ = """
          Convenience filter utility for corresponding function in pyplot.
  
          Example:
  
          >>> source([1, 2, 3, 4]) | plot.xlabel('x') | plot.ylabel('y') | plot.title('xy') | (plot.plot() | plot.savefig('foo.png'))
          """
  
      return new_fn
  
  
  _try_fns = [
      'annotate',
      'arrow',   
      'autogen_docstring',
      'autoscale',
      'autumn',
      'axes',
      'axhline',
      'axhspan',
      'axis',
      'axvline',
      'axvspan',
      'barbs',
      'bone',
      'box',
      'broken_barh',
      'cla',
      'clabel',
      'clf',
      'clim',
      'cm',
      'cohere',
      'colorbar',
      'colormaps',
      'colors',
      'connect',
      'cool',
      'copper',
      'csd',
      'dedent',
      'delaxes',
      'docstring',
      'draw',
      'figaspect',
      'figimage',
      'figlegend',
      'figtext',
      'figure',
      'fill',
      'fill_between',
      'fill_betweenx',
      'flag',
      'gca',
      'gcf',
      'gci',
      'get',
      'gray',
      'grid',
      'hold',
      'hot',
      'hsv',
      'jet',
      'locator_params',
      'margins',
      'minorticks_off',
      'minorticks_on',
      'normalize',
      'over',
      'pcolor',
      'pcolormesh',
      'pink',
      'plotfile',
      'plotting',
      'polar',
      'prism',
      'psd',
      'quiver',
      'quiverkey',
      'rc',
      'register_cmap',
      'rgrids',
      'sca',
      'sci',
      'set_cmap',
      'setp',
      'silent_list',
      'specgram',
      'spectral',
      'spring',
      'spy',
      'stem',
      'step',
      'subplot',
      'subplot2grid',
      'subplot_tool',
      'subplots',
      'subplots_adjust',
      'summer',
      'suptitle',
      'table',
      'text',
      'thetagrids',
      'tick_params',
      'ticklabel_format',
      'tight_layout',
      'title',
      'tricontour',
      'tricontourf',
      'tripcolor',
      'triplot',
      'twinx',
      'twiny',
      'winter',
      'xlabel',
      'xlim',
      'xscale',
      'xticks',
      'ylabel',
      'ylim',
      'yscale',
      'yticks']
  
  _fns = []
  if has_matplotlib:
      for fn in _try_fns:
          try:
              exec('%s = _make_relay_call(pyplot.%s, "%s")' % (fn, fn, fn))
              _fns.append(fn)
          except AttributeError:
              pass
  
  