#16215: A missing "import" in DiGraph
----------------------------+---------------------------------
   Reporter:  ncohen        |            Owner:
       Type:  enhancement   |           Status:  new
   Priority:  major         |        Milestone:  sage-6.2
  Component:  graph theory  |         Keywords:
  Merged in:                |          Authors:  Nathann Cohen
  Reviewers:                |  Report Upstream:  N/A
Work issues:                |           Branch:
     Commit:                |     Dependencies:
   Stopgaps:                |
----------------------------+---------------------------------
 {{{
 sage: Graph([(0,1),(0,1)],multiedges=False)
 ValueError: Non-multigraph input dict has multiple edges (0,1)
 sage: DiGraph([(0,1),(0,1)],multiedges=False)
 ...
 NameError: global name 'choice' is not defined
 }}}

 The first message is much clearer `:-P`

 Nathann

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Ticket URL: <http://trac.sagemath.org/ticket/16215>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
and MATLAB

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