PEP8 cleanup

compiler/base/geometry.py

@@ -66,14 +66,17 @@ class geometry:
         self.compute_boundary(self.offset, self.mirror, self.rotate)
 
     def compute_boundary(self, offset=vector(0, 0), mirror="", rotate=0):
-        """ Transform with offset, mirror and rotation to get the absolute pin location.
-        We must then re-find the ll and ur. The master is the cell instance. """
+        """
+        Transform with offset, mirror and rotation to get the absolute pin location.
+        We must then re-find the ll and ur. The master is the cell instance.
+        """
         if OPTS.netlist_only:
             self.boundary = [vector(0, 0), vector(0, 0)]
             return
 
         (ll, ur) = [vector(0, 0), vector(self.width, self.height)]
 
+        # Mirroring is performed before rotation
         if mirror == "MX":
             ll = ll.scale(1, -1)
             ur = ur.scale(1, -1)
@@ -202,7 +205,6 @@ class instance(geometry):
                 new_blockages.append(self.transform_coords(b, self.offset, mirr, angle))
         return new_blockages
 
-
     def gds_write_file(self, new_layout):
         """Recursively writes all the sub-modules in this instance"""
         debug.info(4, "writing instance: " + self.name)
@@ -225,7 +227,6 @@ class instance(geometry):
         self.update_boundary()
         debug.info(3, "placing instance {}".format(self))
 
-
     def get_pin(self, name, index=-1):
         """ Return an absolute pin that is offset and transformed based on
         this instance location. Index will return one of several pins."""
@@ -237,7 +238,7 @@ class instance(geometry):
             return pin
         else:
             pins = copy.deepcopy(self.mod.get_pin(name))
-            pin.transform(self.offset,self.mirror,self.rotate)
+            pins.transform(self.offset, self.mirror, self.rotate)
             return pin[index]
 
     def get_num_pins(self, name):
@@ -265,6 +266,7 @@ class instance(geometry):
         """ override print function output """
         return "( inst: " + self.name + " @" + str(self.offset) + " mod=" + self.mod.name + " " + self.mirror + " R=" + str(self.rotate) + ")"
 
+    
 class path(geometry):
     """Represents a Path"""