bug fix

Author: Prerak Singh

pydatastructs/graphs/meson.build

@@ -19,19 +19,17 @@ python.install_sources(
 py_include = include_directories('../utils/_backend/cpp')
 
 python.extension_module(
-    '_graph',
-    '_backend/cpp/graph.cpp',
-    include_directories: py_include,
+    '_nodes',
+    '_backend/cpp/nodes.cpp',
     install: true,
-    subdir: 'pydatastructs/graphs/_backend/cpp'
+    subdir: 'pydatastructs/utils/_backend/cpp'
 )
 
 python.extension_module(
-    '_algorithms',
-    '_backend/cpp/algorithms.cpp',
-    include_directories: py_include,
+    '_graph_utils',
+    '_backend/cpp/graph_utils.cpp',
     install: true,
-    subdir: 'pydatastructs/graphs/_backend/cpp'
+    subdir: 'pydatastructs/utils/_backend/cpp'
 )
 
 subdir('tests')

pydatastructs/utils/__init__.py

@@ -5,14 +5,18 @@
     testing_util,
 )
 
+from ._backend.cpp import _graph_utils
+
+AdjacencyListGraphNode = _graph_utils.AdjacencyListGraphNode
+AdjacencyMatrixGraphNode = _graph_utils.AdjacencyMatrixGraphNode
+GraphNode = _graph_utils.GraphNode
+GraphEdge = _graph_utils.GraphEdge
+
 from .misc_util import (
     TreeNode,
     MAryTreeNode,
     LinkedListNode,
     BinomialTreeNode,
-    AdjacencyListGraphNode,
-    AdjacencyMatrixGraphNode,
-    GraphEdge,
     Set,
     CartesianTreeNode,
     RedBlackTreeNode,
@@ -25,5 +29,11 @@
 )
 from .testing_util import test
 
+__all__.extend([
+    'AdjacencyListGraphNode',
+    'AdjacencyMatrixGraphNode',
+    'GraphNode',
+    'GraphEdge',
+])
 __all__.extend(misc_util.__all__)
 __all__.extend(testing_util.__all__)