remove further causalgraphicalmodel code

Author: fehiepsi

notebooks/05_the_many_variables_and_the_spurious_waffles.ipynb

@@ -1690,28 +1690,19 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "dag5_7 = CausalGraphicalModel(\n",
-    "    nodes=[\"M\", \"K\", \"N\"], edges=[(\"M\", \"K\"), (\"N\", \"K\"), (\"M\", \"N\")]\n",
-    ")\n",
+    "dag5_7 = nx.DiGraph()\n",
+    "dag5_7.add_edges_from([(\"M\", \"K\"), (\"N\", \"K\"), (\"M\", \"N\")])\n",
     "coordinates = {\"M\": (0, 0.5), \"K\": (1, 1), \"N\": (2, 0.5)}\n",
-    "nodes = list(dag5_7.dag.nodes.keys())\n",
-    "edges = list(dag5_7.dag.edges.keys())\n",
     "MElist = []\n",
     "for i in range(2):\n",
     "    for j in range(2):\n",
     "        for k in range(2):\n",
-    "            try:\n",
-    "                new_dag = CausalGraphicalModel(\n",
-    "                    nodes=nodes,\n",
-    "                    edges=[\n",
-    "                        edges[0] if i == 0 else edges[0][::-1],\n",
-    "                        edges[1] if j == 0 else edges[1][::-1],\n",
-    "                        edges[2] if k == 0 else edges[2][::-1],\n",
-    "                    ],\n",
-    "                )\n",
-    "                MElist.append(new_dag)\n",
-    "            except:\n",
-    "                pass"
+    "            new_dag = nx.DiGraph()\n",
+    "            new_dag.add_edges_from(\n",
+    "                [edge[::-1] if flip else edge for edge, flip in zip(dag5_7.edges, (i, j, k))]\n",
+    "            )\n",
+    "            if not list(nx.simple_cycles(new_dag)):\n",
+    "                MElist.append(new_dag)"
    ]
   },
   {