Matplotlib/Pylab Error

[subhabangalore at gmail.com]

Dear Group,

I am trying to enumerate few interesting errors on pylab/matplotlib. 
If any of the learned members can kindly let me know how should I address them.

I am trying to enumerate them as follows.

i) >>> import numpy
>>> import pylab
>>> t = numpy.arange(0.0, 1.0+0.01, 0.01)
>>> s = numpy.cos(2*2*numpy.pi*t)
>>> pylab.plot(t, s)
[<matplotlib.lines.Line2D object at 0x021122D0>]
>>> pylab.show()
Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Python26\lib\lib-tk\Tkinter.py", line 1410, in __call__
    return self.func(*args)
  File "C:\Python26\Lib\site-packages\matplotlib\backends\backend_tkagg.py", line 236, in resize
    self.show()
  File "C:\Python26\Lib\site-packages\matplotlib\backends\backend_tkagg.py", line 239, in draw
    FigureCanvasAgg.draw(self)
  File "C:\Python26\Lib\site-packages\matplotlib\backends\backend_agg.py", line 421, in draw
    self.figure.draw(self.renderer)
  File "C:\Python26\Lib\site-packages\matplotlib\artist.py", line 55, in draw_wrapper
    draw(artist, renderer, *args, **kwargs)
  File "C:\Python26\Lib\site-packages\matplotlib\figure.py", line 898, in draw
    func(*args)
  File "C:\Python26\Lib\site-packages\matplotlib\artist.py", line 55, in draw_wrapper
    draw(artist, renderer, *args, **kwargs)
  File "C:\Python26\Lib\site-packages\matplotlib\axes.py", line 1997, in draw
    a.draw(renderer)
  File "C:\Python26\Lib\site-packages\matplotlib\artist.py", line 55, in draw_wrapper
    draw(artist, renderer, *args, **kwargs)
  File "C:\Python26\Lib\site-packages\matplotlib\axis.py", line 1045, in draw
    tick.draw(renderer)
  File "C:\Python26\Lib\site-packages\matplotlib\artist.py", line 55, in draw_wrapper
    draw(artist, renderer, *args, **kwargs)
  File "C:\Python26\Lib\site-packages\matplotlib\axis.py", line 239, in draw
    self.label1.draw(renderer)
  File "C:\Python26\Lib\site-packages\matplotlib\artist.py", line 55, in draw_wrapper
    draw(artist, renderer, *args, **kwargs)
  File "C:\Python26\Lib\site-packages\matplotlib\text.py", line 591, in draw
    ismath=ismath)
  File "C:\Python26\Lib\site-packages\matplotlib\backends\backend_agg.py", line 167, in draw_text
    font.draw_glyphs_to_bitmap(antialiased=rcParams['text.antialiased'])
TypeError: draw_glyphs_to_bitmap() takes no keyword arguments

ii) Python 2.6.1 (r261:67517, Dec  4 2008, 16:51:00) [MSC v.1500 32 bit (Intel)] on win32
Type "copyright", "credits" or "license()" for more information.

    ****************************************************************
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    makes to its subprocess using this computer's internal loopback
    interface.  This connection is not visible on any external
    interface and no data is sent to or received from the Internet.
    ****************************************************************
    
IDLE 2.6.1      
>>> import networkx as nx
>>> G=nx.Graph()
>>> G.add_node(1)
>>> G.add_nodes_from([2,3])
>>> H=nx.path_graph(10)
>>> G.add_nodes_from(H)
>>> G.add_node(H)
>>> G.add_edge(1,2)
>>> G.draw()

Traceback (most recent call last):
  File "<pyshell#8>", line 1, in <module>
    G.draw()
AttributeError: 'Graph' object has no attribute 'draw'
>>> import matplotlib.pyplot as plt
>>> plt.show()
>>> nx.draw(G)
>>> plt.show()
Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Python26\lib\lib-tk\Tkinter.py", line 1410, in __call__
    return self.func(*args)
  File "C:\Python26\Lib\site-packages\matplotlib\backends\backend_tkagg.py", line 236, in resize
    self.show()
  File "C:\Python26\Lib\site-packages\matplotlib\backends\backend_tkagg.py", line 239, in draw
    FigureCanvasAgg.draw(self)
  File "C:\Python26\Lib\site-packages\matplotlib\backends\backend_agg.py", line 421, in draw
    self.figure.draw(self.renderer)
  File "C:\Python26\Lib\site-packages\matplotlib\artist.py", line 55, in draw_wrapper
    draw(artist, renderer, *args, **kwargs)
  File "C:\Python26\Lib\site-packages\matplotlib\figure.py", line 898, in draw
    func(*args)
  File "C:\Python26\Lib\site-packages\matplotlib\artist.py", line 55, in draw_wrapper
    draw(artist, renderer, *args, **kwargs)
  File "C:\Python26\Lib\site-packages\matplotlib\axes.py", line 1997, in draw
    a.draw(renderer)
  File "C:\Python26\Lib\site-packages\matplotlib\artist.py", line 55, in draw_wrapper
    draw(artist, renderer, *args, **kwargs)
  File "C:\Python26\Lib\site-packages\matplotlib\text.py", line 591, in draw
    ismath=ismath)
  File "C:\Python26\Lib\site-packages\matplotlib\backends\backend_agg.py", line 167, in draw_text
    font.draw_glyphs_to_bitmap(antialiased=rcParams['text.antialiased'])
TypeError: draw_glyphs_to_bitmap() takes no keyword arguments

Regards,
Subhabrata.