>>> import _opcode, print
>>> pprint.pprint(_opcode.get_specialization_stats())
{'binary_subscr': {'deferred': 1545,
                   'deopt': 4,
                   'detailed': {(<class 'mappingproxy'>, 'asend', 'not list|tuple|dict'): 1,
                                (<class 'str'>, -3, 'not list|tuple|dict'): 1,
                                (<class 'str'>, -1, 'not list|tuple|dict'): 2,
                                (<class 'str'>, 0, 'not list|tuple|dict'): 8,
                                (<class 'str'>, 2, 'not list|tuple|dict'): 1,
                                (<class 'enum._EnumDict'>, '_ignore_', 'not list|tuple|dict'): 1,
                                (<class 'sre_parse.SubPattern'>, 0, 'not list|tuple|dict'): 8,
                                (<class 'str'>, 7, 'not list|tuple|dict'): 1,
                                (<class 'str'>, 19, 'not list|tuple|dict'): 1,
                                (<class 'str'>, 26, 'not list|tuple|dict'): 1,
                                (<class 'mappingproxy'>, 'from_bytes', 'not list|tuple|dict'): 1},
                   'hit': 870,
                   'miss': 12,
                   'specialization_failure': 49,
                   'specialization_success': 49,
                   'unquickened': 1879},
 'load_attr': {'deferred': 3206,
               'deopt': 24,
               'detailed': {(<class '_frozen_importlib.ModuleSpec'>, 'cached', 'property'): 2,
                            (<class '_frozen_importlib.ModuleSpec'>, 'has_location', 'property'): 2,
                            (<class '_frozen_importlib.ModuleSpec'>, 'parent', 'property'): 2,
                            (<class 'function'>, '__dict__', 'overriding descriptor'): 4,
                            (<class 'sys.flags'>, 'optimize', 'non-object slot'): 2,
                            (<class 'type'>, '_ORIGIN', '__getattribute__ overridden'): 1,
                            (<class 'type'>, 'find_spec', '__getattribute__ overridden'): 3,
                            (<class 'sys.flags'>, 'verbose', 'non-object slot'): 10,
                            (<class 'os.stat_result'>, 'st_mode', 'non-object slot'): 2,
                            (<class 'os.stat_result'>, 'st_mtime', 'non-object slot'): 3,
                            (<class 'os.stat_result'>, 'st_size', 'non-object slot'): 1,
                            (<class 'sys.flags'>, 'ignore_environment', 'non-object slot'): 2,
                            (<class 'module'>, '__dict__', 'index out of range'): 1,
                            (<class 'type'>, '__dict__', '__getattribute__ overridden'): 8,
                            (<class 'super'>, '__new__', '__getattribute__ overridden'): 3,
                            (<class 'type'>, '__mro__', '__getattribute__ overridden'): 3,
                            (<class 'type'>, '__new__', '__getattribute__ overridden'): 5,
                            (<class 'classmethod'>, '__func__', 'non-object slot'): 2,
                            (<class 'function'>, '__name__', 'overriding descriptor'): 2,
                            (<class 'frame'>, 'f_globals', 'overriding descriptor'): 1,
                            (<class 'enum.EnumType'>, 'VAR_KEYWORD', '__getattribute__ overridden'): 1,
                            (<class 'enum.EnumType'>, 'VAR_POSITIONAL', '__getattribute__ overridden'): 1,
                            (<class 'enum.EnumType'>, '__new__', '__getattribute__ overridden'): 4,
                            (<class 'enum.EnumType'>, '_member_map_', '__getattribute__ overridden'): 7,
                            (<class 'enum.EnumType'>, '_member_names_', '__getattribute__ overridden'): 4,
                            (<class 'enum.auto'>, 'value', 'no dict or not a dict'): 2,
                            (<class 'enum.EnumType'>, '_member_type_', '__getattribute__ overridden'): 7,
                            (<class 'NoneType'>, '__doc__', 'non descriptor'): 1,
                            (<class 'NoneType'>, '__new__', 'non descriptor'): 1,
                            (<class 'enum.EnumType'>, '__dict__', '__getattribute__ overridden'): 1,
                            (<class 'enum.EnumType'>, '__mro__', '__getattribute__ overridden'): 1,
                            (<class 'enum.EnumType'>, '__name__', '__getattribute__ overridden'): 1,
                            (<class 'enum.EnumType'>, '_generate_next_value_', '__getattribute__ overridden'): 1,
                            (<class 'enum.EnumType'>, '_new_member_', '__getattribute__ overridden'): 1,
                            (<class 'enum.EnumType'>, '_use_args_', '__getattribute__ overridden'): 2,
                            (<class 'enum.EnumType'>, '_value2member_map_', '__getattribute__ overridden'): 1,
                            (<enum 'FlagBoundary'>, '__init__', 'method'): 1,
                            (<class 'type'>, '__name__', '__getattribute__ overridden'): 1,
                            (<flag 'RegexFlag'>, '_value_', 'negative offset'): 1,
                            (<class 'enum.EnumType'>, '_iter_member_by_def_', '__getattribute__ overridden'): 1,
                            (<class 'sre_constants._NamedIntConstant'>, 'name', 'negative offset'): 2,
                            (<class 'list'>, 'append', 'method'): 10,
                            (<class 'sre_parse.SubPattern'>, 'append', 'method'): 1,
                            (<class 'sre_parse.Tokenizer'>, 'get', 'method'): 1,
                            (<class 'sre_parse.Tokenizer'>, 'match', 'method'): 2,
                            (<class 'type'>, '__call__', '__getattribute__ overridden'): 1,
                            (<class 'type'>, '__repr__', '__getattribute__ overridden'): 11,
                            (<class 'type'>, '_fields', '__getattribute__ overridden'): 1,
                            (<class 'builtin_function_or_method'>, '__call__', 'method'): 1,
                            (<class 'enum.EnumType'>, 'KEYWORD_ONLY', '__getattribute__ overridden'): 1,
                            (<class 'enum.EnumType'>, 'POSITIONAL_ONLY', '__getattribute__ overridden'): 1,
                            (<class 'enum.EnumType'>, 'POSITIONAL_OR_KEYWORD', '__getattribute__ overridden'): 1,
                            (<class 'pprint.PrettyPrinter'>, '_dispatch', 'attribute not in dict'): 1,
                            (<class '_io.TextIOWrapper'>, 'write', 'method'): 1,
                            (<class 'type'>, 'copy', '__getattribute__ overridden'): 4},
               'hit': 5628,
               'miss': 178,
               'specialization_failure': 120,
               'specialization_success': 157,
               'unquickened': 4886},
 'load_global': {'deferred': 3370,
                 'deopt': 199,
                 'hit': 7880,
                 'miss': 1538,
                 'specialization_failure': 0,
                 'specialization_success': 471,
                 'unquickened': 11157}}