new_contents: # The plot server must be running
  # Go to http://localhost:5006/bokeh to view this plot
  
  import time
  from collections import OrderedDict
  import numpy as np
  
  from bokeh.plotting import *
  from bokeh.charts import Line
  from bokeh.models import GlyphRenderer
  
  N = 80
  x = np.linspace(0, 4*np.pi, N)
  # output_server("line_animate")
  xyvalues = OrderedDict(sin=np.sin(x), cos=np.cos(x))
  
  chart = Line(xyvalues, title="Lines", ylabel='measures', server='line_animate')
  
  # show(chart)
  # _session = cursession()
  chart.show()
  _session = chart.session
  
  renderer = chart.select(dict(type=GlyphRenderer))
  ds = renderer[0].data_source
  
  while True:
      for i in np.hstack((np.linspace(1, -1, 100), np.linspace(-1, 1, 100))):
          for k, values in xyvalues.items():
              if k != 'x':
                  ds.data['y_%s'%k] = values * i
          _session.store_objects(ds)
          time.sleep(0.05)
  
subject: add line_animate charts server example