本文整理汇总了Python中graphs.Graph.add_vertex方法的典型用法代码示例。如果您正苦于以下问题：Python Graph.add_vertex方法的具体用法？Python Graph.add_vertex怎么用？Python Graph.add_vertex使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类graphs.Graph的用法示例。
在下文中一共展示了Graph.add_vertex方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: test_add_vertex
# 需要导入模块: from graphs import Graph [as 别名]
# 或者: from graphs.Graph import add_vertex [as 别名]
def test_add_vertex(self):
"""Tests the add_vertex method with an empty graph.
"""
graph = Graph()
self.assertFalse(graph.contains_vertex('A'), 'The graph does not contain A yet.')
graph.add_vertex('A')
self.assertTrue(graph.contains_vertex('A'), 'The graph now contains A.')示例2: test_add_vertex_existing_one
# 需要导入模块: from graphs import Graph [as 别名]
# 或者: from graphs.Graph import add_vertex [as 别名]
def test_add_vertex_existing_one(self):
"""Tests the add_vertex method in a graph where the vertex to add already exists.
"""
data = { 'A' : ['B'] }
graph = Graph(graph=data)
connected = graph.connected_vertex('A')
self.assertTrue(graph.contains_vertex('A'), 'Graph contains the vertex A.')
self.assertEqual(connected[0], 'B', 'A has an edge to vertex B.')
graph.add_vertex('A')
connected = graph.connected_vertex('A')
self.assertTrue(graph.contains_vertex('A'), 'Graph still contains vertex A.')
self.assertEqual(connected[0], 'B', 'A still has an edge to vertex B.')示例3: test_is_connected
# 需要导入模块: from graphs import Graph [as 别名]
# 或者: from graphs.Graph import add_vertex [as 别名]
def test_is_connected(self):
# Returns False for an empty graph
v, w = self.v, self.w
g = Graph([v, w], [])
eq_(g.is_connected(), False)
# Returns True for a complete graph
g.add_all_edges()
eq_(g.is_connected(), True)
# Returns False when a new vertex is added
x = Vertex('x')
g.add_vertex(x)
eq_(g.is_connected(), False)
# Returns True when edge is added to connect it
e2 = Edge(w, x)
g.add_edge(e2)
eq_(g.is_connected(), True)