#19451: Graph plot default options before first call to plot() fail
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   Reporter:  jmantysalo    |            Owner:
       Type:  defect        |           Status:  new
   Priority:  minor         |        Milestone:  sage-6.10
  Component:  group theory  |         Keywords:
  Merged in:                |          Authors:
  Reviewers:                |  Report Upstream:  N/A
Work issues:                |           Branch:
     Commit:                |     Dependencies:
   Stopgaps:                |
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 {{{
 sage: G = Graph({1:[2,3,4]})
 sage: sage.graphs.graph_plot.DEFAULT_PLOT_OPTIONS['vertex_shape'] = 's'
 ---------------------------------------------------------------------------
 AttributeError                            Traceback (most recent call
 last)
 <ipython-input-2-aa626427af43> in <module>()
 ----> 1 sage.graphs.graph_plot.DEFAULT_PLOT_OPTIONS['vertex_shape'] = 's'

 AttributeError: 'module' object has no attribute 'graph_plot'
 sage: G.plot()
 Launched png viewer for Graphics object consisting of 8 graphics
 primitives
 sage: sage.graphs.graph_plot.DEFAULT_PLOT_OPTIONS['vertex_shape'] = 's'
 sage:
 }}}

 I.e. I can set up default options for graph plotting, but only after
 making at least one plot.

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Ticket URL: <http://trac.sagemath.org/ticket/19451>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
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