# Path: google/cloud/ndb/exceptions.py
# class Error(Exception):
# class ContextError(Error):
# class BadValueError(Error):
# class BadArgumentError(Error):
# class BadRequestError(Error):
# class Rollback(Error):
# class BadQueryError(Error):
# class BadFilterError(Error):
# class NoLongerImplementedError(NotImplementedError):
# class Cancelled(Error):
# class NestedRetryException(Error):
#     def __init__(self):
#     def __init__(self, filter):
#     def __init__(self):
# 
# Path: google/cloud/ndb/_options.py
# class Options(object):
# class ReadOptions(Options):
#     def options_or_model_properties(cls, wrapped):
#     def options(cls, wrapped, _disambiguate_from_model_properties=False):
#         def wrapper(*args, **kwargs):
#                 def get_arg(kwargs, name):
#     def slots(cls):
#     def __init__(self, config=None, **kwargs):
#     def __eq__(self, other):
#     def __ne__(self, other):
#     def __repr__(self):
#     def copy(self, **kwargs):
#     def items(self):
#     def __init__(self, config=None, **kwargs):
# 
# Path: google/cloud/ndb/tasklets.py
# class Future(object):
# class _TaskletFuture(Future):
# class _MultiFuture(Future):
# class Return(Exception):
# class QueueFuture(object):
# class ReducingFuture(object):
# class SerialQueueFuture(object):
#     def __init__(self, info="Unknown"):
#     def __repr__(self):
#     def done(self):
#     def running(self):
#     def wait(self):
#     def check_success(self):
#     def set_result(self, result):
#     def set_exception(self, exception):
#     def _finish(self):
#     def result(self):
#     def exception(self):
#     def get_traceback(self):
#     def add_done_callback(self, callback):
#     def cancel(self):
#     def cancelled(self):
#     def wait_any(futures):
#     def wait_all(futures):
#     def __init__(self, generator, context, info="Unknown"):
#     def _advance_tasklet(self, send_value=None, error=None):
#         def done_callback(yielded):
#     def cancel(self):
# def _get_return_value(stop):
#     def __init__(self, dependencies):
#     def __repr__(self):
#     def _dependency_done(self, dependency):
#     def cancel(self):
# def tasklet(wrapped):
#     def tasklet_wrapper(*args, **kwargs):
# def wait_any(futures):
# def wait_all(futures):
# def sleep(seconds):
# def add_flow_exception(*args, **kwargs):
# def make_context(*args, **kwargs):
# def make_default_context(*args, **kwargs):
#     def __init__(self, *args, **kwargs):
#     def __init__(self, *args, **kwargs):
#     def __init__(self, *args, **kwargs):
# def set_context(*args, **kwargs):
# def synctasklet(wrapped):
#     def synctasklet_wrapper(*args, **kwargs):
# def toplevel(wrapped):
#     def toplevel_wrapper(*args, **kwargs):
# 
# Path: google/cloud/ndb/utils.py
# TRUTHY_STRINGS = {"t", "true", "y", "yes", "on", "1"}
# DEBUG = asbool(os.environ.get("NDB_DEBUG", False))
# def asbool(value):
# def code_info(*args, **kwargs):
# def decorator(*args, **kwargs):
# def frame_info(*args, **kwargs):
# def func_info(*args, **kwargs):
# def gen_info(*args, **kwargs):
# def get_stack(*args, **kwargs):
# def logging_debug(log, message, *args, **kwargs):
#     def __init__(self, **kwargs):
#     def __call__(self, wrapped):
#         def wrapper(*args, **kwargs):
# def positional(max_pos_args):
#     def positional_decorator(wrapped):
#         def positional_wrapper(*args, **kwds):
# def tweak_logging(*args, **kwargs):
# def wrapping(*args, **kwargs):
# class keyword_only(object):


import functools
import logging
import six
from google.cloud.ndb import exceptions
from google.cloud.ndb import _options
from google.cloud.ndb import tasklets
from google.cloud.ndb import utils
        from google.cloud.ndb import _gql  # avoid circular import
        from google.cloud.ndb import model
        from google.cloud.ndb import model
        from google.cloud.ndb import _datastore_query
        from google.cloud.ndb import _datastore_query
        from google.cloud.ndb import context as context_module
        from google.cloud.ndb import _datastore_api
        from google.cloud.ndb import model
        from google.cloud.ndb import model
        from google.cloud.ndb import _datastore_query
        from google.cloud.ndb import _datastore_query
        from google.cloud.ndb import _datastore_query
        from google.cloud.ndb import _datastore_query
        from google.cloud.ndb import _datastore_query
        from google.cloud.ndb import _datastore_query
    from google.cloud.ndb import _gql
    from google.cloud.ndb import model
    from google.cloud.ndb import model
        return "{}({!r})".format(type(self).__name__, self._key)

    def __eq__(self, other):
        if not isinstance(other, Parameter):
            return NotImplemented

        return self._key == other._key

    @property
    def key(self):
        """Retrieve the key."""
        return self._key

    def resolve(self, bindings, used):
        """Resolve the current parameter from the parameter bindings.

        Args:
            bindings (dict): A mapping of parameter bindings.
            used (Dict[Union[str, int], bool]): A mapping of already used
                parameters. This will be modified if the current parameter
                is in ``bindings``.

        Returns:
            Any: The bound value for the current parameter.

        Raises:
            .BadArgumentError: If the current parameter is not in ``bindings``.
        """
        key = self._key
        if key not in bindings:

# Path: google/cloud/ndb/exceptions.py
# class Error(Exception):
# class ContextError(Error):
# class BadValueError(Error):
# class BadArgumentError(Error):
# class BadRequestError(Error):
# class Rollback(Error):
# class BadQueryError(Error):
# class BadFilterError(Error):
# class NoLongerImplementedError(NotImplementedError):
# class Cancelled(Error):
# class NestedRetryException(Error):
#     def __init__(self):
#     def __init__(self, filter):
#     def __init__(self):
# 
# Path: google/cloud/ndb/_options.py
# class Options(object):
# class ReadOptions(Options):
#     def options_or_model_properties(cls, wrapped):
#     def options(cls, wrapped, _disambiguate_from_model_properties=False):
#         def wrapper(*args, **kwargs):
#                 def get_arg(kwargs, name):
#     def slots(cls):
#     def __init__(self, config=None, **kwargs):
#     def __eq__(self, other):
#     def __ne__(self, other):
#     def __repr__(self):
#     def copy(self, **kwargs):
#     def items(self):
#     def __init__(self, config=None, **kwargs):
# 
# Path: google/cloud/ndb/tasklets.py
# class Future(object):
# class _TaskletFuture(Future):
# class _MultiFuture(Future):
# class Return(Exception):
# class QueueFuture(object):
# class ReducingFuture(object):
# class SerialQueueFuture(object):
#     def __init__(self, info="Unknown"):
#     def __repr__(self):
#     def done(self):
#     def running(self):
#     def wait(self):
#     def check_success(self):
#     def set_result(self, result):
#     def set_exception(self, exception):
#     def _finish(self):
#     def result(self):
#     def exception(self):
#     def get_traceback(self):
#     def add_done_callback(self, callback):
#     def cancel(self):
#     def cancelled(self):
#     def wait_any(futures):
#     def wait_all(futures):
#     def __init__(self, generator, context, info="Unknown"):
#     def _advance_tasklet(self, send_value=None, error=None):
#         def done_callback(yielded):
#     def cancel(self):
# def _get_return_value(stop):
#     def __init__(self, dependencies):
#     def __repr__(self):
#     def _dependency_done(self, dependency):
#     def cancel(self):
# def tasklet(wrapped):
#     def tasklet_wrapper(*args, **kwargs):
# def wait_any(futures):
# def wait_all(futures):
# def sleep(seconds):
# def add_flow_exception(*args, **kwargs):
# def make_context(*args, **kwargs):
# def make_default_context(*args, **kwargs):
#     def __init__(self, *args, **kwargs):
#     def __init__(self, *args, **kwargs):
#     def __init__(self, *args, **kwargs):
# def set_context(*args, **kwargs):
# def synctasklet(wrapped):
#     def synctasklet_wrapper(*args, **kwargs):
# def toplevel(wrapped):
#     def toplevel_wrapper(*args, **kwargs):
# 
# Path: google/cloud/ndb/utils.py
# TRUTHY_STRINGS = {"t", "true", "y", "yes", "on", "1"}
# DEBUG = asbool(os.environ.get("NDB_DEBUG", False))
# def asbool(value):
# def code_info(*args, **kwargs):
# def decorator(*args, **kwargs):
# def frame_info(*args, **kwargs):
# def func_info(*args, **kwargs):
# def gen_info(*args, **kwargs):
# def get_stack(*args, **kwargs):
# def logging_debug(log, message, *args, **kwargs):
#     def __init__(self, **kwargs):
#     def __call__(self, wrapped):
#         def wrapper(*args, **kwargs):
# def positional(max_pos_args):
#     def positional_decorator(wrapped):
#         def positional_wrapper(*args, **kwds):
# def tweak_logging(*args, **kwargs):
# def wrapping(*args, **kwargs):
# class keyword_only(object):


# Path: google/cloud/ndb/query.py
import functools
import logging
import six
from google.cloud.ndb import exceptions
from google.cloud.ndb import _options
from google.cloud.ndb import tasklets
from google.cloud.ndb import utils
        from google.cloud.ndb import _gql  # avoid circular import
        from google.cloud.ndb import model
        from google.cloud.ndb import model
        from google.cloud.ndb import _datastore_query
        from google.cloud.ndb import _datastore_query
        from google.cloud.ndb import context as context_module
        from google.cloud.ndb import _datastore_api
        from google.cloud.ndb import model
        from google.cloud.ndb import model
        from google.cloud.ndb import _datastore_query
        from google.cloud.ndb import _datastore_query
        from google.cloud.ndb import _datastore_query
        from google.cloud.ndb import _datastore_query
        from google.cloud.ndb import _datastore_query
        from google.cloud.ndb import _datastore_query
    from google.cloud.ndb import _gql
    from google.cloud.ndb import model
    from google.cloud.ndb import model

        return "{}({!r})".format(type(self).__name__, self._key)

    def __eq__(self, other):
        if not isinstance(other, Parameter):
            return NotImplemented

        return self._key == other._key

    @property
    def key(self):
        """Retrieve the key."""
        return self._key

    def resolve(self, bindings, used):
        """Resolve the current parameter from the parameter bindings.

        Args:
            bindings (dict): A mapping of parameter bindings.
            used (Dict[Union[str, int], bool]): A mapping of already used
                parameters. This will be modified if the current parameter
                is in ``bindings``.

        Returns:
            Any: The bound value for the current parameter.

        Raises:
            .BadArgumentError: If the current parameter is not in ``bindings``.
        """
        key = self._key
        if key not in bindings:

            raise exceptions.BadArgumentError("Parameter :{} is not bound.".format(key))