[examples] clean up imports

examples/tutorial/basic_shapes.py

@@ -1,11 +1,9 @@
-from collections.abc import Sequence
 
 import numpy
 from numpy import pi
 
 from masque import (
-    layer_t, Pattern, Label, Port,
+    layer_t, Pattern, Circle, Arc, Polygon,
-    Circle, Arc, Polygon,
     )
 import masque.file.gdsii
 

examples/tutorial/devices.py

@@ -4,8 +4,8 @@ import numpy
 from numpy import pi
 
 from masque import (
-    layer_t, Pattern, Ref, Label, Builder, Port, Polygon,
+    layer_t, Pattern, Ref, Builder, Port, Polygon,
-    Library, ILibraryView,
+    Library,
     )
 from masque.utils import ports2data
 from masque.file.gdsii import writefile, check_valid_names

examples/tutorial/library.py

@@ -1,17 +1,13 @@
 from typing import Any
-from collections.abc import Sequence, Callable
 from pprint import pformat
 
-import numpy
-from numpy import pi
 
-from masque import Pattern, Builder, LazyLibrary
+from masque import Builder, LazyLibrary
 from masque.file.gdsii import writefile, load_libraryfile
 
-import pcgen
 import basic_shapes
 import devices
-from devices import ports_to_data, data_to_ports
+from devices import data_to_ports
 from basic_shapes import GDS_OPTS
 
 

examples/tutorial/pather.py

@@ -1,10 +1,9 @@
 """
 Manual wire routing tutorial: Pather and AutoTool
 """
-from collections.abc import Callable
 from numpy import pi
-from masque import Pather, RenderPather, Library, Pattern, Port, layer_t, map_layers
+from masque import Pather, Library, Pattern, Port, layer_t
-from masque.builder.tools import AutoTool, PathTool
+from masque.builder.tools import AutoTool, Tool
 from masque.file.gdsii import writefile
 
 from basic_shapes import GDS_OPTS

examples/tutorial/renderpather.py

@@ -1,8 +1,7 @@
 """
 Manual wire routing tutorial: RenderPather an PathTool
 """
-from collections.abc import Callable
+from masque import RenderPather, Library
-from masque import RenderPather, Library, Pattern, Port, layer_t, map_layers
 from masque.builder.tools import PathTool
 from masque.file.gdsii import writefile