PEP8 cleanup

compiler/base/custom_cell_properties.py

@@ -7,6 +7,7 @@
 #
 from globals import OPTS
 
+
 class _pins:
     def __init__(self, pin_dict):
         # make the pins elements of the class to allow "." access.
@@ -14,6 +15,7 @@ class _pins:
         for k, v in pin_dict.items():
             self.__dict__[k] = v
 
+            
 class _cell:
     def __init__(self, pin_dict):
         pin_dict.update(self._default_power_pins())
@@ -24,13 +26,16 @@ class _cell:
         return self._pins
 
     def _default_power_pins(self):
-        return { 'vdd' : 'vdd', 'gnd' : 'gnd' }
+        return {'vdd': 'vdd',
+                'gnd': 'gnd'}
+
     
 class _mirror_axis:
     def __init__(self, x, y):
         self.x = x
         self.y = y
 
+        
 class _bitcell:
     def __init__(self, mirror, cell_s8_6t, cell_6t, cell_1rw1r, cell_1w1r):
         self.mirror = mirror
@@ -94,21 +99,25 @@ class _dff:
         self.custom_type_list = custom_type_list
         self.clk_pin = clk_pin
 
+        
 class _dff_buff:
     def __init__(self, use_custom_ports, custom_buff_ports, add_body_contacts):
         self.use_custom_ports = use_custom_ports
         self.buf_ports = custom_buff_ports
         self.add_body_contacts = add_body_contacts
 
+        
 class _dff_buff_array:
     def __init__(self, use_custom_ports, add_body_contacts):
         self.use_custom_ports = use_custom_ports
         self.add_body_contacts = add_body_contacts
 
+        
 class _bitcell_array:
     def __init__(self, use_custom_cell_arrangement):
         self.use_custom_cell_arrangement = use_custom_cell_arrangement
 
+        
 class cell_properties():
     """
     This contains meta information about the custom designed cells. For