In [1]: t=x.createtext()
In [2]: t.string = "Hello"
In [3]: t.string
Out[3]: ['Hello']
In [4]: x.open()
In [5]: x.gettextextent(t)
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
<ipython-input-5-33453cf4a74f> in <module>()
----> 1 x.gettextextent(t)
/Users/doutriaux1/anaconda2/envs/2.6-42-gaa9dc08/lib/python2.7/site-packages/vcs/Canvas.pyc in gettextextent(self, textobject)
2178 To = textobject.To_name
2179 Tt = textobject.Tt_name
-> 2180 return self.backend.gettextextent(To, Tt)
2181
2182 def match_color(self, color, colormap=None): # noqa
/Users/doutriaux1/anaconda2/envs/2.6-42-gaa9dc08/lib/python2.7/site-packages/vcs/VTKPlots.pyc in gettextextent(self, textorientation, texttable)
1270 dpi = self.renWin.GetDPI()
1271
-> 1272 length = max(len(texttable.string), len(texttable.x), len(texttable.y))
1273
1274 strings = texttable.string + [texttable.string[-1]] * (length - len(texttable.string))
TypeError: object of type 'NoneType' has no len()
