Ejemplo n.º 1
0
def _patch_NeuroTools(target):     
    
#     return
    
    def StGen():
        pass 

    def StandardPickleFile():
        pass 

    def signals():
        pass      
 
    def get_display():
        pass    

    def set_labels():
        pass   

    def set_axis_limits():
        pass   
    target.StGen = types.MethodType(StGen, target)
    target.StandardPickleFile = types.MethodType(StandardPickleFile, target)
    target.signals = types.MethodType(signals, target)
    target.ConductanceList = types.ClassType('ConductanceList',(),{})
    target.CurrentList = types.ClassType('CurrentList',(),{})
    target.VmList = types.ClassType('VmList',(),{})
    target.SpikeList = types.ClassType('SpikeList',(),{})
    target.get_display = types.MethodType(get_display, target) 
    target.set_labels = types.MethodType(set_labels, target) 
    target.set_axis_limits = types.MethodType(set_axis_limits, target) 
Ejemplo n.º 2
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    def __new__(cls, name, bases, attrs):
        # If this isn't a subclass of Model, don't do anything special.
        try:
            parents = [b for b in bases if issubclass(b, Model)]
            if not parents:
                return super(ModelBase, cls).__new__(cls, name, bases, attrs)
        except NameError:
            # 'Model' isn't defined yet, meaning we're looking at Django's own
            # Model class, defined below.
            return super(ModelBase, cls).__new__(cls, name, bases, attrs)

        # Create the class.
        new_class = type.__new__(cls, name, bases, {'__module__': attrs.pop('__module__')})
        new_class.add_to_class('_meta', Options(attrs.pop('Meta', None)))
        new_class.add_to_class('DoesNotExist', types.ClassType('DoesNotExist', (ObjectDoesNotExist,), {}))
        new_class.add_to_class('MultipleObjectsReturned',
            types.ClassType('MultipleObjectsReturned', (MultipleObjectsReturned, ), {}))

        # Build complete list of parents
        for base in parents:
            # Things without _meta aren't functional models, so they're
            # uninteresting parents.
            if hasattr(base, '_meta'):
                new_class._meta.parents.append(base)
                new_class._meta.parents.extend(base._meta.parents)


        if getattr(new_class._meta, 'app_label', None) is None:
            # Figure out the app_label by looking one level up.
            # For 'django.contrib.sites.models', this would be 'sites'.
            model_module = sys.modules[new_class.__module__]
            new_class._meta.app_label = model_module.__name__.split('.')[-2]

        # Bail out early if we have already created this class.
        m = get_model(new_class._meta.app_label, name, False)
        if m is not None:
            return m

        # Add all attributes to the class.
        for obj_name, obj in attrs.items():
            new_class.add_to_class(obj_name, obj)

        # Add Fields inherited from parents
        for parent in new_class._meta.parents:
            for field in parent._meta.fields:
                # Only add parent fields if they aren't defined for this class.
                try:
                    new_class._meta.get_field(field.name)
                except FieldDoesNotExist:
                    field.contribute_to_class(new_class, field.name)

        new_class._prepare()

        register_models(new_class._meta.app_label, new_class)
        # Because of the way imports happen (recursively), we may or may not be
        # the first class for this model to register with the framework. There
        # should only be one class for each model, so we must always return the
        # registered version.
        return get_model(new_class._meta.app_label, name, False)
Ejemplo n.º 3
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def _deserialize_func(funcs, globalDict):
    items = pickle.loads(funcs)
    res = None
    for objType, name, data in items:
        if objType == 'func':
            codeArgs, funcArgs, updatedGlobals = pickle.loads(data)
            code = CodeType(*codeArgs)    
    
            globalDict.update(**updatedGlobals)

            value = FunctionType(code, globalDict, *funcArgs)
        elif objType == 'mod':
            value = __import__(data)
        elif objType == 'oldclass':
            class_name, module, bases, class_dict = data
            value = typesmod.ClassType(class_name, bases, {k:_deserialize_func(v, globalDict) for k, v in class_dict.items()})
            value.__module__ = module
        elif objType == 'type':
            raise Exception('deserialize type')
        else:
            raise Exception('Unknown serialization type')
        globalDict[name] = value

        if res is None:
            res = value

    return res
Ejemplo n.º 4
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    def hook_class(self, cls, hook):

        # Attach a new class type with the original methods on it so that
        # super() works as expected.
        hookname = "_rootpy_{0}_OrigMethods".format(cls.__name__)
        newcls = types.ClassType(hookname, (), {})
        cls.__bases__ = (newcls, ) + cls.__bases__

        # For every function-like (or property), replace `cls`'s methods
        for key, value in hook.__dict__.iteritems():
            if not isinstance(value, interesting):
                continue

            # Save the original methods onto the newcls which has been
            # injected onto our bases, so that the originals can be called with
            # super().
            orig_method = getattr(cls, key, None)
            if orig_method:
                newcls.__dict__[key] = orig_method

            newmeth = value
            if uses_super(newmeth):
                assert getattr(hook, "__rootpy_have_super_overridden", None), (
                    "Hook class {0} is not decorated with @super_overridden! "
                    "See the ``hook`` module to understand why this must be "
                    "the case for all classes overridden with @classhook".
                    format(hook))
                # Make super behave as though the class hierarchy is what we'd
                # like.
                newsuper = self.overridden_super(hook, cls)
                newmeth = inject_closure_values(value, super=newsuper)
            setattr(cls, key, newmeth)
Ejemplo n.º 5
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    def set_meta(mcs, bases, attr):
        """
        Get all of the ``Meta`` classes from bases and combine them with this
        class.

        Pops or creates ``Meta`` from attributes, combines all bases, adds
        ``_meta`` to attributes with all meta

        :param bases: bases of this class
        :param attr: class attributes
        :return: attributes with ``Meta`` class from combined parents
        """
        # pop the meta class from the attributes
        meta = attr.pop(mcs._meta_cls, types.ClassType(mcs._meta_cls, (), {}))
        # get a list of the meta public class attributes
        meta_attrs = get_public_attributes(meta)
        # check all bases for meta
        for base in bases:
            base_meta = getattr(base, mcs._meta_cls, None)
            # skip if base has no meta
            if base_meta is None:
                continue
            # loop over base meta
            for a in get_public_attributes(base_meta, as_list=False):
                # skip if already in meta
                if a in meta_attrs:
                    continue
                # copy meta-option attribute from base
                setattr(meta, a, getattr(base_meta, a))
        attr[mcs._meta_attr] = meta  # set _meta combined from bases
        return attr
Ejemplo n.º 6
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    def extension_add_event(self, code, evt, name=None):
        """extension_add_event(code, evt, [name])

        Add an extension event.  CODE is the numeric code, and EVT is
        the event class.  EVT will be cloned, and the attribute _code
        of the new event class will be set to CODE.

        If NAME is omitted, it will be set to the name of EVT.  This
        name is used to insert an entry in the DictWrapper
        extension_event.
        """

        if hasattr(types, 'ClassType'):
            newevt = types.ClassType(evt.__name__, evt.__bases__,
                                     evt.__dict__.copy())
        else:
            newevt = types.new_class(evt.__name__, evt.__bases__,
                                     evt.__dict__.copy())
        newevt._code = code

        self.display.add_extension_event(code, newevt)

        if name is None:
            name = evt.__name__

        setattr(self.extension_event, name, code)
Ejemplo n.º 7
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    def test_dunder_module(self):
        self.assertEqual(str.__module__, '__builtin__')
        class Foo:
            pass
        Fu = types.ClassType('Fu', (), {})
        for cls in Foo, Fu:
            self.assert_('__module__' in cls.__dict__)
            self.assertEqual(cls.__module__, __name__)
            self.assertEqual(str(cls), '%s.%s' % (__name__, cls.__name__))
            self.assert_(repr(cls).startswith('<class %s.%s at' %
                                              (__name__, cls.__name__)))
            obj = cls()
            self.assert_(str(obj).startswith('<%s.%s instance at' %
                                             (__name__, cls.__name__)))

        class Bar(object):
            pass
        class Baz(Object):
            pass
        Bang = type('Bang', (), {})
        for cls in Bar, Baz, Bang:
            self.assert_('__module__' in cls.__dict__)
            self.assertEqual(cls.__module__, __name__)
            self.assertEqual(str(cls), "<class '%s.%s'>" % (__name__, cls.__name__))
            self.assertEqual(repr(cls), "<class '%s.%s'>" % (__name__, cls.__name__))
        self.assert_(str(Bar()).startswith('<%s.Bar object at' % __name__))
        self.assert_(str(Baz()).startswith("org.python.proxies.%s$Baz" % __name__))
Ejemplo n.º 8
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    def extension_add_subevent(self, code, subcode, evt, name=None):
        """extension_add_subevent(code, evt, [name])

        Add an extension subevent.  CODE is the numeric code, subcode
        is the sub-ID of this event that shares the code ID with other
        sub-events and EVT is the event class.  EVT will be cloned, and
        the attribute _code of the new event class will be set to CODE.

        If NAME is omitted, it will be set to the name of EVT.  This
        name is used to insert an entry in the DictWrapper
        extension_event.
        """

        if hasattr(types, 'ClassType'):
            newevt = types.ClassType(evt.__name__, evt.__bases__,
                                     evt.__dict__.copy())
        else:
            newevt = types.new_class(evt.__name__, evt.__bases__,
                                     evt.__dict__.copy())
        newevt._code = code

        self.display.add_extension_event(code, newevt, subcode)

        if name is None:
            name = evt.__name__

        # store subcodes as a tuple of (event code, subcode) in the
        # extension dict maintained in the display object
        setattr(self.extension_event, name, (code, subcode))
Ejemplo n.º 9
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  def __new__(cls, name, bases, attrs):
    """Creates a combined appengine and Django model.

    The resulting model will be known to both the appengine libraries and
    Django.
    """
    if name == 'BaseModel':
      # This metaclass only acts on subclasses of BaseModel.
      return super(PropertiedClassWithDjango, cls).__new__(cls, name,
                                                           bases, attrs)

    new_class = super(PropertiedClassWithDjango, cls).__new__(cls, name,
                                                              bases, attrs)

    new_class._meta = ModelOptions(new_class)
    new_class.objects = ModelManager(new_class)
    new_class._default_manager = new_class.objects
    new_class.DoesNotExist = types.ClassType('DoesNotExist',
                                             (ObjectDoesNotExist,), {})

    m = get_model(new_class._meta.app_label, name, False)
    if m:
      return m

    register_models(new_class._meta.app_label, new_class)
    return get_model(new_class._meta.app_label, name, False)
Ejemplo n.º 10
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def table_description(classname, nclassname, shape=()):
    """
    Return a table description for testing queries.

    The description consists of all PyTables data types, both in the
    top level and in the ``c_nested`` nested column.  A column of a
    certain TYPE gets called ``c_TYPE``.  An extra integer column
    ``c_extra`` is also provided.  If a `shape` is given, it will be
    used for all columns.  Finally, an extra indexed column
    ``c_idxextra`` is added as well in order to provide some basic
    tests for multi-index queries.
    """
    classdict = {}
    colpos = append_columns(classdict, shape)

    ndescr = nested_description(nclassname, colpos, shape=shape)
    classdict['c_nested'] = ndescr
    colpos += 1

    extracol = tables.IntCol(shape=shape, pos=colpos)
    classdict['c_extra'] = extracol
    colpos += 1

    idxextracol = tables.IntCol(shape=shape, pos=colpos)
    classdict['c_idxextra'] = idxextracol
    colpos += 1

    return types.ClassType(classname, (tables.IsDescription, ), classdict)
Ejemplo n.º 11
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def _patch_mpi4py(target): 
    class COMM_WORLD():
        size=1
    
    def barrier(target, *args, **kwargs):
        pass
    
    def bcast(target, *args, **kwargs):
        pass
    
    d={'size':1,
       'rank':0,
       'bcast':types.MethodType(bcast, target),
       'barrier': types.MethodType(barrier, target)}  

    dd={'COMM_WORLD': types.ClassType('COMM_WORLD',(),d)}
    target.MPI = types.ClassType('MPI',(),dd)
Ejemplo n.º 12
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def nested_description(classname, pos, shape=()):
    """
    Return a nested column description with all PyTables data types.

    A column of a certain TYPE gets called ``c_TYPE``.  The nested
    column will be placed in the position indicated by `pos`.
    """
    classdict = {}
    append_columns(classdict, shape=shape)
    classdict['_v_pos'] = pos
    return types.ClassType(classname, (tables.IsDescription, ), classdict)
Ejemplo n.º 13
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    def __new__(cls, name, bases, attrs):
        # If this isn't a subclass of Model, don't do anything special.
        if name == 'Model' or not filter(lambda b: issubclass(b, Model),
                                         bases):
            return super(ModelBase, cls).__new__(cls, name, bases, attrs)

        # Create the class.
        new_class = type.__new__(cls, name, bases,
                                 {'__module__': attrs.pop('__module__')})
        new_class.add_to_class('_meta', Options(attrs.pop('Meta', None)))
        new_class.add_to_class(
            'DoesNotExist',
            types.ClassType('DoesNotExist', (ObjectDoesNotExist, ), {}))

        # Build complete list of parents
        for base in bases:
            # TODO: Checking for the presence of '_meta' is hackish.
            if '_meta' in dir(base):
                new_class._meta.parents.append(base)
                new_class._meta.parents.extend(base._meta.parents)

        model_module = sys.modules[new_class.__module__]

        if getattr(new_class._meta, 'app_label', None) is None:
            # Figure out the app_label by looking one level up.
            # For 'django.contrib.sites.models', this would be 'sites'.
            new_class._meta.app_label = model_module.__name__.split('.')[-2]

        # Bail out early if we have already created this class.
        m = get_model(new_class._meta.app_label, name, False)
        if m is not None:
            return m

        # Add all attributes to the class.
        for obj_name, obj in attrs.items():
            new_class.add_to_class(obj_name, obj)

        # Add Fields inherited from parents
        for parent in new_class._meta.parents:
            for field in parent._meta.fields:
                # Only add parent fields if they aren't defined for this class.
                try:
                    new_class._meta.get_field(field.name)
                except FieldDoesNotExist:
                    field.contribute_to_class(new_class, field.name)

        new_class._prepare()

        register_models(new_class._meta.app_label, new_class)
        # Because of the way imports happen (recursively), we may or may not be
        # the first class for this model to register with the framework. There
        # should only be one class for each model, so we must always return the
        # registered version.
        return get_model(new_class._meta.app_label, name, False)
Ejemplo n.º 14
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 def test_newstyle_new_classobj(self):
     # Ensure new.classobj can create new style classes
     class Foo(object):
         pass
     def hello(self):
         return 'hello'
     Bar = types.ClassType('Bar', (Foo,), dict(hello=hello))
     self.assert_(type(Bar), type)
     self.assert_(issubclass(Bar, Foo))
     self.assert_(hasattr(Bar, 'hello'))
     self.assertEquals(Bar().hello(), 'hello')
Ejemplo n.º 15
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def _create_NativeException(cliClass):
    from rpython.translator.cli.support import getattr_ex
    TYPE = cliClass._INSTANCE
    if PythonNet.__name__ in ('CLR', 'clr'):
        # we are using pythonnet -- use the .NET class
        name = '%s.%s' % (TYPE._namespace, TYPE._classname)
        res = getattr_ex(PythonNet, name)
    else:
        # we are not using pythonnet -- create a fake class
        res = types.ClassType(TYPE._classname, (Exception, ), {})
    res._rpython_hints = {'NATIVE_INSTANCE': TYPE}
    return res
Ejemplo n.º 16
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    def watchObject(self, object, identifier, callback):
        """Watch the given object.

        Whenever I think the object might have changed, I'll send an
        ObjectLink of it to the callback.

        The identifier argument is used to generate identifiers for
        objects which are members of this one.
        """
        if type(object) is not types.InstanceType:
            raise TypeError, "Sorry, can only place a watch on Instances."

        # uninstallers = []

        dct = {}
        reflect.addMethodNamesToDict(object.__class__, dct, '')
        for k in object.__dict__.keys():
            dct[k] = 1

        members = dct.keys()

        clazzNS = {}
        clazz = types.ClassType(
            'Watching%s%X' % (object.__class__.__name__, id(object)), (
                _MonkeysSetattrMixin,
                object.__class__,
            ), clazzNS)

        clazzNS['_watchEmitChanged'] = types.MethodType(
            lambda slf, i=identifier, b=self, cb=callback: cb(
                b.browseObject(slf, i)),
            None,
            clazz)

        # orig_class = object.__class__
        object.__class__ = clazz

        for name in members:
            m = getattr(object, name)
            # Only hook bound methods.
            if ((type(m) is types.MethodType) and (m.im_self is not None)):
                # What's the use of putting watch monkeys on methods
                # in addition to __setattr__?  Well, um, uh, if the
                # methods modify their attributes (i.e. add a key to
                # a dictionary) instead of [re]setting them, then
                # we wouldn't know about it unless we did this.
                # (Is that convincing?)

                monkey = _WatchMonkey(object)
                monkey.install(name)
 def __get__(self, instance, model=None):
     if instance != None:
         raise AttributeError, "Manipulator cannot be accessed via instance"
     else:
         if not self.man:
             # Create a class that inherits from the "Manipulator" class
             # given in the model class (if specified) and the automatic
             # manipulator.
             bases = [self.base]
             if hasattr(model, 'Manipulator'):
                 bases = [model.Manipulator] + bases
             self.man = types.ClassType(self.name, tuple(bases), {})
             self.man._prepare(model)
         return self.man
Ejemplo n.º 18
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def NewTransmissionClass(table):
    cls = types.ClassType(table.TableName.encode("utf-8"),
                          (TransmissionClassBase, ), {})
    cls.__storm_table__ = table.TableName
    cls.ID = Int(primary=True)
    cls.TransmissionID = Int()
    cls.Transmission = Reference(cls.TransmissionID, Transmission.ID)
    cls.Order = Int()
    cls.fields = []
    cls.TransmissionTable = table
    for field in table.Fields:
        cls.fields.append(field)
        setattr(cls, field.FieldName, Unicode())
    return cls
Ejemplo n.º 19
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def makeSQLTests(base, suffix, globals):
    """
    Make a test case for every db connector which can connect.

    @param base: Base class for test case. Additional base classes
                 will be a DBConnector subclass and unittest.TestCase
    @param suffix: A suffix used to create test case names. Prefixes
                   are defined in the DBConnector subclasses.
    """
    connectors = [GadflyConnector, SQLiteConnector, PyPgSQLConnector,
                  PsycopgConnector, MySQLConnector, FirebirdConnector]
    for connclass in connectors:
        name = connclass.TEST_PREFIX + suffix
        klass = types.ClassType(name, (connclass, base, unittest.TestCase),
                                base.__dict__)
        globals[name] = klass
Ejemplo n.º 20
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 def buildProtocol(self, addr):
     # here comes the EVIL
     obj = self.userAuthObject.instance
     bases = []
     for base in obj.__class__.__bases__:
         if base == connection.SSHConnection:
             bases.append(SSHUnixClientProtocol)
         else:
             bases.append(base)
     newClass = types.ClassType(obj.__class__.__name__, tuple(bases),
                                obj.__class__.__dict__)
     obj.__class__ = newClass
     SSHUnixClientProtocol.__init__(obj)
     log.msg('returning %s' % obj)
     if self.d:
         d = self.d
         self.d = None
         d.callback(None)
     return obj
Ejemplo n.º 21
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def custom(klassName, klass='unknown'):
    """Define custom control based on xrcClass.

    klass: new object name
    xrcClass: name of an existing XRC object class or
              a class object defining class parameters.
    """
    if type(klass) is str:
        # Copy correct xxx class under new name
        kl = xxxDict[klass]
        xxxClass = types.ClassType('xxx' + klassName, kl.__bases__, kl.__dict__)
    else:
        xxxClass = klass
        # Register param IDs
        for param in klass.allParams + klass.paramDict.keys():
            if not paramIDs.has_key(param):
                paramIDs[param] = wx.NewId()
    # Insert in dictionaty
    xxxDict[klassName] = xxxClass
    # Add to menu
    g.pullDownMenu.addCustom(klassName)
Ejemplo n.º 22
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def load_local_class(bytes):
    t = loads(bytes)
    if not isinstance(t, tuple):
        return classes_loaded[t]

    name, bases, internal, external = t
    if name in classes_loaded:
        return classes_loaded[name]

    if any(isinstance(base, type) for base in bases):
        cls = type(name, bases, internal)
    else:
        assert six.PY2
        cls = types.ClassType(name, bases, internal)

    classes_loaded[name] = cls
    external = loads(external)
    for k, v in external.items():
        if isinstance(k, tuple):
            t, k = k
            if t == 'property':
                fget, fset, fdel, doc = v
                v = property(fget, fset, fdel, doc)

            if t == 'staticmethod':
                v = load_closure(v)
                v = staticmethod(v)

            if t == 'classmethod':
                v = load_closure(v)
                v = classmethod(v)

            if t == 'method':
                v = load_closure(v)

        setattr(cls, k, v)

    return cls
Ejemplo n.º 23
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    def decorate_row(cls, row, name, bases, cls_attr):
        # store a backref to the container dataset
        row._dataset = cls

        # bind a ref method
        row.ref = Ref(cls, row)

        # fix inherited primary keys
        names_to_uninherit = []
        for name in dir(row):
            if name in cls_attr['_primary_key']:
                if name not in row.__dict__:
                    # then this was an inherited value, so we need to nullify it
                    # without 1) disturbing the other inherited values and 2)
                    # disturbing the inherited class.  is this nuts?
                    names_to_uninherit.append(name)
        bases_to_replace = []
        if names_to_uninherit:
            base_pos = 0
            for c in row.__bases__:
                for name in names_to_uninherit:
                    if name in c.__dict__:
                        bases_to_replace.append((c, base_pos))
                        # just need to detect one attribute...
                        break
                base_pos += 1
        new_bases = [b for b in row.__bases__]
        for base_c, base_pos in bases_to_replace:
            # this may not work if the row's base was a new-style class
            new_base = types.ClassType(
                            base_c.__name__, base_c.__bases__,
                            dict([(k, getattr(base_c, k)) for k in dir(base_c) \
                                    if not k.startswith('_') and \
                                    k not in names_to_uninherit]))
            new_bases[base_pos] = new_base
        if new_bases:
            row.__bases__ = tuple(new_bases)
Ejemplo n.º 24
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def _patch_nest(target):
    def sr(target, *args, **kwargs):
        pass
        
    def version(target, *args, **kwargs):
        return 'NEST 2.2.2'

    def Models(target, *args, **kwargs):
        return []


    def Install(target, *args, **kwargs):
        pass
    
    def GetDefaults(target, *args, **kwargs):
        return {'receptor_types':{'AMPA_1':0,
                                  'AMPA_2':0,
                                  'NMDA_1':0,
                                  'NMDA_2':0,
                                  'GABAA_1':0,
                                  'GABAA_2':0,
                                  'GABAA_3':0}}
        
    def GetKernelStatus(target, *args, **kwargs):
        return 1
    
    target.GetKernelStatus = types.MethodType(GetKernelStatus, target)
    target.sr = types.MethodType(sr, target)
    target.version = types.MethodType(version, target)
    target.Models = types.MethodType(Models, target)
    target.Install = types.MethodType(Install, target)
    target.GetDefaults = types.MethodType(GetDefaults, target)
    
    d={'pushsli':None,
       'runsli':None}
    target.pynestkernel = types.ClassType('pynestkernel',(),d)
Ejemplo n.º 25
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    BUILDER = builder.CEDICTBuilder
    OPTIONS = [{'enableFTS3': False},
        {'filePath': './test/downloads/CEDICT', 'fileType': '.gz'}]


class CEDICTGRBuilderTest(TableBuilderTest, unittest.TestCase):
    BUILDER = builder.CEDICTGRBuilder
    OPTIONS = [{'enableFTS3': False},
        {'filePath': './test/downloads/CEDICTGR', 'fileType': '.zip'}]


class HanDeDictBuilderTest(TableBuilderTest, unittest.TestCase):
    BUILDER = builder.HanDeDictBuilder
    OPTIONS = [{'enableFTS3': False},
        {'filePath': './test/downloads/HanDeDict', 'fileType': '.tar.bz2'}]


class CFDICTBuilderTest(TableBuilderTest, unittest.TestCase):
    BUILDER = builder.CFDICTBuilder
    OPTIONS = [{'enableFTS3': False},
        {'filePath': './test/downloads/CFDICT', 'fileType': '.zip'}]


# Generate default test classes for TableBuilder without special definitions
for builderClass in DatabaseBuilder.getTableBuilderClasses(
    resolveConflicts=False):
    testClassName = '%sTest' % builderClass.__name__
    if testClassName not in globals():
        globals()[testClassName] = types.ClassType(testClassName,
            (TableBuilderTest, unittest.TestCase), {'BUILDER': builderClass})
    del testClassName
Ejemplo n.º 26
0
    def decorate_row(cls, row, name, bases, cls_attr):
        """Each row (an inner class) assigned to a :class:`DataSet` will be customized after it is created.
        
        This is because it's easier to type::
            
            class MyData(DataSet):
                class foo:
                    col1 = "bz"
                    col2 = "bx"
        
        ... than it is to type:
        
            class MyData(DataSet):
                class foo(Row):
                    col1 = "bz"
                    col2 = "bx"
        
        (Note the subclassing that would be required in inner classes without this behavior.)
        
        But more importantly, rows must be able to inherit from other rows, like::
        
            class MyData(DataSet):
                class joe:
                    first_name = "Joe"
                    last_name = "Phelps"
                class joe_gibbs(joe):
                    last_name = "Gibbs"
        
        Here is what happens to each inner class object as it is assigned to a :class:`DataSet`:
        
        1. A ``Row._dataset`` property is added which is a reference to the :class:`DataSet` instance.
        2. A ``Row.ref()`` property (instance of :class:`Ref`) is added
        3. Any database primary key inherited from another Row is de-referenced 
           since primary keys must be unique per row.  See :ref:`Using Dataset <using-dataset>` for an 
           example of referencing primary key values that may or may not exist yet.
        
        
        """
        # store a backref to the container dataset
        row._dataset = cls

        # bind a ref method
        row.ref = Ref(cls, row)

        # fix inherited primary keys
        names_to_uninherit = []
        for name in dir(row):
            if name in cls_attr['_primary_key']:
                if name not in row.__dict__:
                    # then this was an inherited value, so we need to nullify it
                    # without 1) disturbing the other inherited values and 2)
                    # disturbing the inherited class.  is this nuts?
                    names_to_uninherit.append(name)
        bases_to_replace = []
        if names_to_uninherit:
            base_pos = 0
            for c in row.__bases__:
                for name in names_to_uninherit:
                    if name in c.__dict__:
                        bases_to_replace.append((c, base_pos))
                        # just need to detect one attribute...
                        break
                base_pos += 1
        new_bases = [b for b in row.__bases__]
        for base_c, base_pos in bases_to_replace:
            # this may not work if the row's base was a new-style class
            new_base = types.ClassType(
                            base_c.__name__, base_c.__bases__,
                            dict([(k, getattr(base_c, k)) for k in dir(base_c) \
                                    if not k.startswith('_') and \
                                    k not in names_to_uninherit]))
            new_bases[base_pos] = new_base
        if new_bases:
            row.__bases__ = tuple(new_bases)
Ejemplo n.º 27
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from celery.utils.serialization import subclass_exception
from celery.utils.serialization import find_pickleable_exception as fnpe
from celery.utils.serialization import UnpickleableExceptionWrapper
from celery.utils.serialization import get_pickleable_exception as gpe


class wrapobject(object):

    def __init__(self, *args, **kwargs):
        self.args = args


if sys.version_info[0] == 3 or getattr(sys, 'pypy_version_info', None):
    Oldstyle = None
else:
    Oldstyle = types.ClassType(bytes_if_py2('Oldstyle'), (), {})
Unpickleable = subclass_exception(
    bytes_if_py2('Unpickleable'), KeyError, 'foo.module',
)
Impossible = subclass_exception(
    bytes_if_py2('Impossible'), object, 'foo.module',
)
Lookalike = subclass_exception(
    bytes_if_py2('Lookalike'), wrapobject, 'foo.module',
)


class test_nulldict:

    def test_nulldict(self):
        x = _nulldict()
Ejemplo n.º 28
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def construct_deprecated(name, alt):
    doc = """Deprecated alias for :class:`%s`""" % alt.__name__
    cls = types.ClassType(name, (Deprecated, alt),
                          dict(cur=name, alt=alt, __doc__=doc))
    return cls
Ejemplo n.º 29
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 def subclass_exception(name, parent, unused):
     return types.ClassType(name, (parent, ), {})
Ejemplo n.º 30
0
)
from celery.result import result_from_tuple
from celery.utils import uuid

from celery.tests.case import AppCase, Mock, SkipTest, patch


class wrapobject(object):
    def __init__(self, *args, **kwargs):
        self.args = args


if sys.version_info[0] == 3 or getattr(sys, 'pypy_version_info', None):
    Oldstyle = None
else:
    Oldstyle = types.ClassType('Oldstyle', (), {})
Unpickleable = subclass_exception('Unpickleable', KeyError, 'foo.module')
Impossible = subclass_exception('Impossible', object, 'foo.module')
Lookalike = subclass_exception('Lookalike', wrapobject, 'foo.module')


class test_serialization(AppCase):
    def test_create_exception_cls(self):
        self.assertTrue(serialization.create_exception_cls('FooError', 'm'))
        self.assertTrue(
            serialization.create_exception_cls('FooError', 'm', KeyError))


class test_BaseBackend_interface(AppCase):
    def setup(self):
        self.b = BaseBackend(self.app)