How to use the blinker._utilities.symbol function in blinker

"""
from warnings import warn
from weakref import WeakValueDictionary

from blinker._utilities import (
    WeakTypes,
    contextmanager,
    defaultdict,
    hashable_identity,
    lazy_property,
    reference,
    symbol,
    )


ANY = symbol('ANY')
ANY.__doc__ = 'Token for "any sender".'
ANY_ID = 0


class Signal(object):
    """A notification emitter."""

    #: An :obj:`ANY` convenience synonym, allows ``Signal.ANY``
    #: without an additional import.
    ANY = ANY

    @lazy_property
    def receiver_connected(self):
        """Emitted after each :meth:`connect`.

        The signal sender is the signal instance, and the :meth:`connect`

"""
from warnings import warn
from weakref import WeakValueDictionary

from blinker._utilities import (
    WeakTypes,
    contextmanager,
    defaultdict,
    hashable_identity,
    lazy_property,
    reference,
    symbol,
    )


ANY = symbol('ANY')
ANY.__doc__ = 'Token for "any sender".'
ANY_ID = 0


class Signal(object):
    """A notification emitter."""

    #: An :obj:`ANY` convenience synonym, allows ``Signal.ANY``
    #: without an additional import.
    ANY = ANY

    @lazy_property
    def receiver_connected(self):
        """Emitted after each :meth:`connect`.

        The signal sender is the signal instance, and the :meth:`connect`

standard_library.install_aliases()
from builtins import *
from warnings import warn
from weakref import WeakValueDictionary

from blinker._utilities import (
    WeakTypes,
    contextmanager,
    defaultdict,
    hashable_identity,
    reference,
    symbol,
    )


ANY = symbol('ANY')
ANY.__doc__ = 'Token for "any sender".'
ANY_ID = 0


class Signal(object):
    """A notification emitter."""

    #: An :obj:`ANY` convenience synonym, allows ``Signal.ANY``
    #: without an additional import.
    ANY = ANY

    def __init__(self, doc=None):
        """
        :param doc: optional.  If provided, will be assigned to the signal's
          __doc__ attribute.

"""
from warnings import warn
from weakref import WeakValueDictionary

from blinker._utilities import (
    WeakTypes,
    contextmanager,
    defaultdict,
    hashable_identity,
    lazy_property,
    reference,
    symbol,
    )


ANY = symbol('ANY')
ANY.__doc__ = 'Token for "any sender".'
ANY_ID = 0


class Signal(object):
    """A notification emitter."""

    #: An :obj:`ANY` convenience synonym, allows ``Signal.ANY``
    #: without an additional import.
    ANY = ANY

    @lazy_property
    def receiver_connected(self):
        """Emitted after each :meth:`connect`.

        The signal sender is the signal instance, and the :meth:`connect`

from blinker._utilities import (
    WeakTypes,
    contextmanager,
    defaultdict,
    hashable_identity,
    lazy_property,
    reference,
    symbol,
    )


ANY = symbol('ANY')
ANY.__doc__ = 'Token for "any sender".'
ANY_ID = 0

Unspecified = symbol('Unspecified')


class Signal(object):
    """A notification emitter."""

    #: An :obj:`ANY` convenience synonym, allows ``Signal.ANY``
    #: without an additional import.
    ANY = ANY

    #: If this callable is set, will be invoked with `(receiver, sender,
    #: kwargs)` for each receiver during :meth:`send` instead of invoking
    #: reciever functions directly.
    receiver_adapter = None

    @lazy_property
    def receiver_connected(self):

def __reduce__(self):
        return symbol, (self.name,)

"""
from warnings import warn
from weakref import WeakValueDictionary

from blinker._utilities import (
    WeakTypes,
    contextmanager,
    defaultdict,
    hashable_identity,
    lazy_property,
    reference,
    symbol,
    )


ANY = symbol('ANY')
ANY.__doc__ = 'Token for "any sender".'
ANY_ID = 0

Unspecified = symbol('Unspecified')


class Signal(object):
    """A notification emitter."""

    #: An :obj:`ANY` convenience synonym, allows ``Signal.ANY``
    #: without an additional import.
    ANY = ANY

    #: If this callable is set, will be invoked with `(receiver, sender,
    #: kwargs)` for each receiver during :meth:`send` instead of invoking
    #: reciever functions directly.