Python types.InstanceType() Examples

def latestVersionOf(self, anObject):
        """
        Get the latest version of an object.

        This can handle just about anything callable; instances, functions,
        methods, and classes.
        """
        t = type(anObject)
        if t == types.FunctionType:
            return latestFunction(anObject)
        elif t == types.MethodType:
            if anObject.__self__ is None:
                return getattr(anObject.im_class, anObject.__name__)
            else:
                return getattr(anObject.__self__, anObject.__name__)
        elif not _PY3 and t == InstanceType:
            # Kick it, if it's out of date.
            getattr(anObject, 'nothing', None)
            return anObject
        elif _isClassType(t):
            return latestClass(anObject)
        else:
            log.msg('warning returning anObject!')
            return anObject 

def _invoke_callbacks(self):
        for callback in self._done_callbacks:
            try:
                callback(self)
            except Exception:
                LOGGER.exception('exception calling callback for %r', self)
            except BaseException:
                # Explicitly let all other new-style exceptions through so
                # that we can catch all old-style exceptions with a simple
                # "except:" clause below.
                #
                # All old-style exception objects are instances of
                # types.InstanceType, but "except types.InstanceType:" does
                # not catch old-style exceptions for some reason.  Thus, the
                # only way to catch all old-style exceptions without catching
                # any new-style exceptions is to filter out the new-style
                # exceptions, which all derive from BaseException.
                raise
            except:
                # Because of the BaseException clause above, this handler only
                # executes for old-style exception objects.
                LOGGER.exception('exception calling callback for %r', self) 

def in_idle():
    """
    @rtype: C{boolean}
    @return: true if this function is run within idle.  Tkinter
    programs that are run in idle should never call L{Tk.mainloop}; so
    this function should be used to gate all calls to C{Tk.mainloop}.

    @warning: This function works by checking C{sys.stdin}.  If the
    user has modified C{sys.stdin}, then it may return incorrect
    results.
    """
    import sys, types
    return (type(sys.stdin) == types.InstanceType and \
            sys.stdin.__class__.__name__ == 'PyShell')

##//////////////////////////////////////////////////////
##  Test code.
##////////////////////////////////////////////////////// 

def packDevicesList(self, devicesCount):
        values = []
        i = 0
        for field in self._fields_:
            if (i == devicesCount + 2):
                break
            if type(field[1]) is types.InstanceType:
                if BaseStucture in field[1].__class__.__bases__:
                     values.append(getattr(self, field[0], 0).pack())
            else:
                if 'si' == field[1]:
                    values.append(chr(getattr(self, field[0], 0)))
                else:
                    values.append(getattr(self, field[0], 0))
            i += 1
        return struct.pack(self.formatDevicesList(devicesCount), *values) 

def _invoke_callbacks(self):
        for callback in self._done_callbacks:
            try:
                callback(self)
            except Exception:
                LOGGER.exception('exception calling callback for %r', self)
            except BaseException:
                # Explicitly let all other new-style exceptions through so
                # that we can catch all old-style exceptions with a simple
                # "except:" clause below.
                #
                # All old-style exception objects are instances of
                # types.InstanceType, but "except types.InstanceType:" does
                # not catch old-style exceptions for some reason.  Thus, the
                # only way to catch all old-style exceptions without catching
                # any new-style exceptions is to filter out the new-style
                # exceptions, which all derive from BaseException.
                raise
            except:
                # Because of the BaseException clause above, this handler only
                # executes for old-style exception objects.
                LOGGER.exception('exception calling callback for %r', self) 

def formatDevicesList(self, devicesCount):

        pack_format = '>'
        i = 0
        for field in self._fields_:
            if (i == devicesCount + 2):
                break
            if type(field[1]) is types.InstanceType:
                if BaseStucture in field[1].__class__.__bases__:
                    pack_format += str(field[1].size()) + 's'
            elif 'si' == field[1]:
                pack_format += 'c'
            elif '<' in field[1]:
                pack_format += field[1][1:]
            else:
                pack_format += field[1]
            i += 1
        return pack_format 

def call_internal(self, func_modifier, args, kw):
        """ Common utility class for calling an overloaded method,
        either bound on a class or not.  func_modifier is a lambda
        function which is used to "bind" bound methods to the correct
        instance
        """
        argtype = type(args[0])
        class Old:
            pass
        if argtype is types.InstanceType: # old-style class
            argtype = args[0].__class__        
        hier = list(inspect.getmro(argtype)) # class hierarchy
        hier.reverse() # order w/ superclass first
        hier = [ t for t in hier if t in self.registry ]
        if len(hier) == 0:
            raise TypeError("Function %s has no compatible overloads registered for argument type %s" % 
                            (self.func_name, argtype))            
        result = None
        for t in hier:
            if not self.allow_cascade[t] and t != hier[-1]:
                continue # don't "cascade" down from superclass on this method
            result = func_modifier(self.registry[t])(*args, **kw)
        return result 

def try_serialize_handler(handler):
  """Try to serialize map/reduce handler.

  Args:
    handler: handler function/instance. Handler can be a function or an
      instance of a callable class. In the latter case, the handler will
      be serialized across slices to allow users to save states.

  Returns:
    serialized handler string or None.
  """
  if (isinstance(handler, types.InstanceType) or  # old style class
      (isinstance(handler, object) and  # new style class
       not inspect.isfunction(handler) and
       not inspect.ismethod(handler)) and
      hasattr(handler, "__call__")):
    return pickle.dumps(handler)
  return None 

def try_serialize_handler(handler):
  """Try to serialize map/reduce handler.

  Args:
    handler: handler function/instance. Handler can be a function or an
      instance of a callable class. In the latter case, the handler will
      be serialized across slices to allow users to save states.

  Returns:
    serialized handler string or None.
  """
  if (isinstance(handler, types.InstanceType) or  # old style class
      (isinstance(handler, object) and  # new style class
       not inspect.isfunction(handler) and
       not inspect.ismethod(handler)) and
      hasattr(handler, "__call__")):
    return pickle.dumps(handler)
  return None 

def init_info(self):
        scxx_converter.init_info(self)
        self.type_name = 'instance'
        self.check_func = 'PyInstance_Check'
        self.c_type = 'py::object'
        self.return_type = 'py::object'
        self.to_c_return = 'py::object(py_obj)'
        self.matching_types = [types.InstanceType]
        # ref counting handled by py::object
        self.use_ref_count = 0

#----------------------------------------------------------------------------
# Catchall Converter
#
# catch all now handles callable objects
#---------------------------------------------------------------------------- 

def error(self, obj, value):
        kind = type(value)
        if (not py3compat.PY3) and kind is InstanceType:
            msg = 'class %s' % value.__class__.__name__
        else:
            msg = '%s (i.e. %s)' % ( str( kind )[1:-1], repr( value ) )

        if obj is not None:
            e = "The '%s' trait of %s instance must be %s, but a value of %s was specified." \
                % (self.name, class_of(obj),
                   self.info(), msg)
        else:
            e = "The '%s' trait must be %s, but a value of %r was specified." \
                % (self.name, self.info(), msg)

        raise TraitError(e) 

def collect_variables(self, vars, objects, names, treated, skip_unknown = False):
        for name in names:
            if name not in treated:
                try:
                    obj = objects[name]
                    try:
                        if sys.version[0] == '2' and type(obj) is types.InstanceType:
                            type_name = "instance (" + obj.__class__.__name__ + ")"
                        else:
                            type_name = type(obj).__name__
                    except:
                        type_name = 'unknown'
                except:
                    if skip_unknown:
                        continue
                    obj = SynthesizedValue('<undefined>', len_value=0)
                    type_name = 'unknown'
                vars.append((name, type(obj), safe_repr(obj), safe_hex_repr(obj), type_name, get_object_len(obj)))
                treated.add(name) 

def collect_variables(self, vars, objects, names, treated, skip_unknown = False):
        for name in names:
            if name not in treated:
                try:
                    obj = objects[name]
                    try:
                        if sys.version[0] == '2' and type(obj) is types.InstanceType:
                            type_name = "instance (" + obj.__class__.__name__ + ")"
                        else:
                            type_name = type(obj).__name__
                    except:
                        type_name = 'unknown'
                except:
                    if skip_unknown:
                        continue
                    obj = SynthesizedValue('<undefined>', len_value=0)
                    type_name = 'unknown'
                vars.append((name, type(obj), safe_repr(obj), safe_hex_repr(obj), type_name, get_object_len(obj)))
                treated.add(name) 

def collect_variables(self, vars, objects, names, treated, skip_unknown = False):
        for name in names:
            if name not in treated:
                try:
                    obj = objects[name]
                    try:
                        if sys.version[0] == '2' and type(obj) is types.InstanceType:
                            type_name = "instance (" + obj.__class__.__name__ + ")"
                        else:
                            type_name = type(obj).__name__
                    except:
                        type_name = 'unknown'
                except:
                    if skip_unknown:
                        continue
                    obj = SynthesizedValue('<undefined>', len_value=0)
                    type_name = 'unknown'
                vars.append((name, type(obj), safe_repr(obj), safe_hex_repr(obj), type_name, get_object_len(obj)))
                treated.add(name) 

def collect_variables(self, vars, objects, names, treated, skip_unknown = False):
        for name in names:
            if name not in treated:
                try:
                    obj = objects[name]
                    try:
                        if sys.version[0] == '2' and type(obj) is types.InstanceType:
                            type_name = "instance (" + obj.__class__.__name__ + ")"
                        else:
                            type_name = type(obj).__name__
                    except:
                        type_name = 'unknown'
                except:
                    if skip_unknown:
                        continue
                    obj = SynthesizedValue('<undefined>', len_value=0)
                    type_name = 'unknown'
                vars.append((name, type(obj), safe_repr(obj), safe_hex_repr(obj), type_name, get_object_len(obj)))
                treated.add(name) 

def latestVersionOf(self, anObject):
        """
        Get the latest version of an object.

        This can handle just about anything callable; instances, functions,
        methods, and classes.
        """
        t = type(anObject)
        if t == types.FunctionType:
            return latestFunction(anObject)
        elif t == types.MethodType:
            if anObject.im_self is None:
                return getattr(anObject.im_class, anObject.__name__)
            else:
                return getattr(anObject.im_self, anObject.__name__)
        elif t == types.InstanceType:
            # Kick it, if it's out of date.
            getattr(anObject, 'nothing', None)
            return anObject
        elif t == types.ClassType:
            return latestClass(anObject)
        else:
            log.msg('warning returning anObject!')
            return anObject 

def __init__(self,data):
    self.change = 0
    self.maxtype = 0
    self.data = data
    if type(data) is types.InstanceType and ".dump" in str(data.__class__):
      self.which = 0
    elif type(data) is types.InstanceType and ".data" in str(data.__class__):
      self.which = 0
    elif type(data) is types.InstanceType and ".mdump" in str(data.__class__):
      self.which = 1
    elif type(data) is types.InstanceType and ".cdata" in str(data.__class__):
      self.which = 1
    else:
      raise StandardError,"unrecognized object passed to ensight"
    
  # -------------------------------------------------------------------- 

def pdef(self, obj, oname=''):
        """Print the call signature for any callable object.

        If the object is a class, print the constructor information."""

        if not callable(obj):
            print('Object is not callable.')
            return

        header = ''

        if inspect.isclass(obj):
            header = self.__head('Class constructor information:\n')
            obj = obj.__init__
        elif (not py3compat.PY3) and type(obj) is types.InstanceType:
            obj = obj.__call__

        output = self._getdef(obj,oname)
        if output is None:
            self.noinfo('definition header',oname)
        else:
            print(header,self.format(output), end=' ', file=io.stdout)

    # In Python 3, all classes are new-style, so they all have __init__. 

def represent_data(self, data):
        if self.ignore_aliases(data):
            self.alias_key = None
        else:
            self.alias_key = id(data)
        if self.alias_key is not None:
            if self.alias_key in self.represented_objects:
                node = self.represented_objects[self.alias_key]
                #if node is None:
                #    raise RepresenterError("recursive objects are not allowed: %r" % data)
                return node
            #self.represented_objects[alias_key] = None
            self.object_keeper.append(data)
        data_types = type(data).__mro__
        if type(data) is types.InstanceType:
            data_types = self.get_classobj_bases(data.__class__)+list(data_types)
        if data_types[0] in self.yaml_representers:
            node = self.yaml_representers[data_types[0]](self, data)
        else:
            for data_type in data_types:
                if data_type in self.yaml_multi_representers:
                    node = self.yaml_multi_representers[data_type](self, data)
                    break
            else:
                if None in self.yaml_multi_representers:
                    node = self.yaml_multi_representers[None](self, data)
                elif None in self.yaml_representers:
                    node = self.yaml_representers[None](self, data)
                else:
                    node = ScalarNode(None, unicode(data))
        #if alias_key is not None:
        #    self.represented_objects[alias_key] = node
        return node 

def dis(x=None):
    """Disassemble classes, methods, functions, or code.

    With no argument, disassemble the last traceback.

    """
    if x is None:
        distb()
        return
    if isinstance(x, types.InstanceType):
        x = x.__class__
    if hasattr(x, 'im_func'):
        x = x.im_func
    if hasattr(x, 'func_code'):
        x = x.func_code
    if hasattr(x, '__dict__'):
        items = x.__dict__.items()
        items.sort()
        for name, x1 in items:
            if isinstance(x1, _have_code):
                print "Disassembly of %s:" % name
                try:
                    dis(x1)
                except TypeError, msg:
                    print "Sorry:", msg
                print 

def __call__(self, test_func):
        self.assert_not_in_testcase_subclass()

        @wraps(test_func)
        def wrapper(test_self=None):
            test_cls = test_self and type(test_self)
            if test_self is not None:
                if issubclass(test_cls, InstanceType):
                    raise TypeError((
                        "@parameterized can't be used with old-style classes, but "
                        "%r has an old-style class. Consider using a new-style "
                        "class, or '@parameterized.expand' "
                        "(see http://stackoverflow.com/q/54867/71522 for more "
                        "information on old-style classes)."
                    ) %(test_self, ))

            original_doc = wrapper.__doc__
            for num, args in enumerate(wrapper.parameterized_input):
                p = param.from_decorator(args)
                unbound_func, nose_tuple = self.param_as_nose_tuple(test_self, test_func, num, p)
                try:
                    wrapper.__doc__ = nose_tuple[0].__doc__
                    # Nose uses `getattr(instance, test_func.__name__)` to get
                    # a method bound to the test instance (as opposed to a
                    # method bound to the instance of the class created when
                    # tests were being enumerated). Set a value here to make
                    # sure nose can get the correct test method.
                    if test_self is not None:
                        setattr(test_cls, test_func.__name__, unbound_func)
                    yield nose_tuple
                finally:
                    if test_self is not None:
                        delattr(test_cls, test_func.__name__)
                    wrapper.__doc__ = original_doc
        wrapper.parameterized_input = self.get_input()
        wrapper.parameterized_func = test_func
        test_func.__name__ = "_parameterized_original_%s" %(test_func.__name__, )
        return wrapper 

def represent_data(self, data):
        if self.ignore_aliases(data):
            self.alias_key = None
        else:
            self.alias_key = id(data)
        if self.alias_key is not None:
            if self.alias_key in self.represented_objects:
                node = self.represented_objects[self.alias_key]
                #if node is None:
                #    raise RepresenterError("recursive objects are not allowed: %r" % data)
                return node
            #self.represented_objects[alias_key] = None
            self.object_keeper.append(data)
        data_types = type(data).__mro__
        if type(data) is types.InstanceType:
            data_types = self.get_classobj_bases(data.__class__)+list(data_types)
        if data_types[0] in self.yaml_representers:
            node = self.yaml_representers[data_types[0]](self, data)
        else:
            for data_type in data_types:
                if data_type in self.yaml_multi_representers:
                    node = self.yaml_multi_representers[data_type](self, data)
                    break
            else:
                if None in self.yaml_multi_representers:
                    node = self.yaml_multi_representers[None](self, data)
                elif None in self.yaml_representers:
                    node = self.yaml_representers[None](self, data)
                else:
                    node = ScalarNode(None, unicode(data))
        #if alias_key is not None:
        #    self.represented_objects[alias_key] = node
        return node 

def is_String(obj):
            t = type(obj)
            return t is StringType \
                or (t is InstanceType and isinstance(obj, UserString)) 

def is_String(obj):
            t = type(obj)
            return t is StringType \
                or t is UnicodeType \
                or (t is InstanceType and isinstance(obj, UserString)) 

def is_Sequence(obj):
        t = type(obj)
        return t is ListType \
            or t is TupleType \
            or (t is InstanceType and isinstance(obj, UserList)) 

def checkrec(self, key, value):
        # override this in a subclass if the key type is different

        if sys.version_info[0] >= 3 :
            if isinstance(key, bytes) :
                key = key.decode("iso8859-1")  # 8 bits

        x = key[1]
        if key[0] == 'S':
            self.assertEqual(type(value), str)
            self.assertEqual(value, 10 * x)

        elif key[0] == 'I':
            self.assertEqual(type(value), int)
            self.assertEqual(value, ord(x))

        elif key[0] == 'L':
            self.assertEqual(type(value), list)
            self.assertEqual(value, [x] * 10)

        elif key[0] == 'O':
            if sys.version_info[0] < 3 :
                from types import InstanceType
                self.assertEqual(type(value), InstanceType)
            else :
                self.assertEqual(type(value), DataClass)

            self.assertEqual(value.S, 10 * x)
            self.assertEqual(value.I, ord(x))
            self.assertEqual(value.L, [x] * 10)

        else:
            self.assertTrue(0, 'Unknown key type, fix the test')

#---------------------------------------------------------------------- 

def describe(thing):
    """Produce a short description of the given thing."""
    if inspect.ismodule(thing):
        if thing.__name__ in sys.builtin_module_names:
            return 'built-in module ' + thing.__name__
        if hasattr(thing, '__path__'):
            return 'package ' + thing.__name__
        else:
            return 'module ' + thing.__name__
    if inspect.isbuiltin(thing):
        return 'built-in function ' + thing.__name__
    if inspect.isgetsetdescriptor(thing):
        return 'getset descriptor %s.%s.%s' % (
            thing.__objclass__.__module__, thing.__objclass__.__name__,
            thing.__name__)
    if inspect.ismemberdescriptor(thing):
        return 'member descriptor %s.%s.%s' % (
            thing.__objclass__.__module__, thing.__objclass__.__name__,
            thing.__name__)
    if inspect.isclass(thing):
        return 'class ' + thing.__name__
    if inspect.isfunction(thing):
        return 'function ' + thing.__name__
    if inspect.ismethod(thing):
        return 'method ' + thing.__name__
    if type(thing) is types.InstanceType:
        return 'instance of ' + thing.__class__.__name__
    return type(thing).__name__ 

def __call__(self, test_func):
        self.assert_not_in_testcase_subclass()

        @wraps(test_func)
        def wrapper(test_self=None):
            test_cls = test_self and type(test_self)
            if test_self is not None:
                if issubclass(test_cls, InstanceType):
                    raise TypeError((
                        "@parameterized can't be used with old-style classes, but "
                        "%r has an old-style class. Consider using a new-style "
                        "class, or '@parameterized.expand' "
                        "(see http://stackoverflow.com/q/54867/71522 for more "
                        "information on old-style classes)."
                    ) %(test_self, ))

            original_doc = wrapper.__doc__
            for num, args in enumerate(wrapper.parameterized_input):
                p = param.from_decorator(args)
                unbound_func, nose_tuple = self.param_as_nose_tuple(test_self, test_func, num, p)
                try:
                    wrapper.__doc__ = nose_tuple[0].__doc__
                    # Nose uses `getattr(instance, test_func.__name__)` to get
                    # a method bound to the test instance (as opposed to a
                    # method bound to the instance of the class created when
                    # tests were being enumerated). Set a value here to make
                    # sure nose can get the correct test method.
                    if test_self is not None:
                        setattr(test_cls, test_func.__name__, unbound_func)
                    yield nose_tuple
                finally:
                    if test_self is not None:
                        delattr(test_cls, test_func.__name__)
                    wrapper.__doc__ = original_doc
        wrapper.parameterized_input = self.get_input()
        wrapper.parameterized_func = test_func
        test_func.__name__ = "_parameterized_original_%s" %(test_func.__name__, )
        return wrapper 

def is_List(obj):
        t = type(obj)
        return t is ListType \
            or (t is InstanceType and isinstance(obj, UserList)) 

def _getmethods(obj, methods):
    # Helper to get a list of methods from an object
    # Adds names to dictionary argument 'methods'
    for name in dir(obj):
        attr = getattr(obj, name)
        if hasattr(attr, '__call__'):
            methods[name] = 1
    if type(obj) == types.InstanceType:
        _getmethods(obj.__class__, methods)
    if type(obj) == types.ClassType:
        for super in obj.__bases__:
            _getmethods(super, methods)