Add pylint fixes to tree determinism code

Author: pavlin-policar

Orange/widgets/visualize/owtreeviewer2d.py

@@ -4,7 +4,7 @@
     QBrush, QPen, QColor, QPainter, QPainterPath, QTransform
 )
 from AnyQt.QtWidgets import (
-    QGraphicsItem, QGraphicsEllipseItem, QGraphicsRectItem, QGraphicsTextItem,
+    QGraphicsItem, QGraphicsEllipseItem, QGraphicsTextItem,
     QGraphicsLineItem, QGraphicsScene, QGraphicsView, QStyle, QSizePolicy,
     QFormLayout
 )
@@ -287,7 +287,7 @@ def brect(node):
 
         if node.branches and node.isOpen:
             for n in node.branches:
-                x, ry = self._fix_pos(n, x, y + self._VSPACING + brect(node).height())
+                x, _ = self._fix_pos(n, x, y + self._VSPACING + brect(node).height())
             x = (node.branches[0].pos().x() + node.branches[-1].pos().x()) / 2
             node.setPos(x, y)
             for e in node.graph_edges():
@@ -435,7 +435,7 @@ def send_report(self):
 
         if self.model:
             self.reportSection("Tree")
-            urlfn, filefn = self.getUniqueImageName(ext=".svg")
+            _, filefn = self.getUniqueImageName(ext=".svg")
             svg = QSvgGenerator()
             svg.setFileName(filefn)
             ssize = self.scene.sceneRect().size()

Orange/widgets/visualize/tests/test_owpythagorastree.py

@@ -301,7 +301,7 @@ def _check_all_same(data):
 
         # Make sure the tree are deterministic for iris
         scene_nodes = []
-        for i in range(n_tries):
+        for _ in range(n_tries):
             self.send_signal(self.signal_name, self.signal_data)
             scene_nodes.append([n.pos() for n in self.get_visible_squares()])
         for node_row in zip(*scene_nodes):
@@ -317,7 +317,7 @@ def _check_all_same(data):
             path.dirname(__file__), "../../tests/datasets/same_entropy.tab"))
         data_same_entropy = TreeLearner()(data_same_entropy)
         scene_nodes = []
-        for i in range(n_tries):
+        for _ in range(n_tries):
             self.send_signal(self.signal_name, data_same_entropy)
             scene_nodes.append([n.pos() for n in self.get_visible_squares()])
         for node_row in zip(*scene_nodes):

Orange/widgets/visualize/tests/test_owtreegraph.py

@@ -60,7 +60,7 @@ def _check_all_same(data):
 
         # Make sure the tree are deterministic for iris
         scene_nodes = []
-        for i in range(n_tries):
+        for _ in range(n_tries):
             self.send_signal(self.signal_name, self.signal_data)
             scene_nodes.append([n.pos() for n in self.widget.scene.nodes()])
         for node_row in zip(*scene_nodes):
@@ -73,7 +73,7 @@ def _check_all_same(data):
         # Make sure trees are deterministic with data where some variables have
         # the same entropy
         scene_nodes = []
-        for i in range(n_tries):
+        for _ in range(n_tries):
             self.send_signal(self.signal_name, self.data_same_entropy)
             scene_nodes.append([n.pos() for n in self.widget.scene.nodes()])
         for node_row in zip(*scene_nodes):