Add __slots__ to internal parser types

Dynamic properties are not used by these types, so using __slots__ is
slightly more efficient. Public inherited properties are also included.

bonemarketsolver/objects/blacklistaction.py

@@ -18,6 +18,8 @@ def convert_to_enum(value):
     return enum[split[1]]
 
 class BlacklistAction(argparse.Action):
+    __slots__ = '_nargs', 'option_strings', 'dest', 'nargs', 'const', 'default', 'type', 'choices', 'required', 'help', 'metavar'
+
     def __init__(self, **kwargs):
         nargs = kwargs.get('nargs')
 

bonemarketsolver/objects/bonemarketargumentparser.py

@@ -5,5 +5,8 @@ from argparse import ArgumentParser
 
 class BoneMarketArgumentParser(ArgumentParser):
     """An ArgumentParser with the ability to read files with any number of space-delimited arguments on a line."""
+
+    __slots__ = 'description', 'argument_default', 'prefix_chars', 'conflict_handler', 'prog', 'usage', 'epilog', 'formatter_class', 'fromfile_prefix_chars', 'add_help', 'allow_abbrev', 'exit_on_error'
+
     def convert_arg_line_to_args(self, arg_line):
         return arg_line.split()

bonemarketsolver/objects/enumaction.py

@@ -4,6 +4,8 @@ __author__ = "Jeremy Saklad"
 import argparse
 
 class EnumAction(argparse.Action):
+    __slots__ = '_enum', '_nargs', 'option_strings', 'dest', 'nargs', 'const', 'default', 'type', 'choices', 'required', 'help', 'metavar'
+
     def __init__(self, **kwargs):
         # Pop off the type value
         enum = kwargs.pop('type', None)

bonemarketsolver/objects/listaction.py

@@ -15,6 +15,8 @@ from ..data.torsos import Torso
 class ListAction(argparse.Action):
     """Lists enumerations referenced by provided strings then exits"""
 
+    __slots__ = '_nargs', '_default', 'option_strings', 'dest', 'nargs', 'const', 'default', 'type', 'choices', 'required', 'help', 'metavar'
+
     list_options = [enum.__name__.lower() for enum in [
                 Torso,
                 Skull,