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📄 __init__.py(7.9 KB)
📄 __init__.pyc(9.31 KB)
📄 __init__.pyo(9.31 KB)
📄 attributes.py(55.94 KB)
📄 attributes.pyc(55.59 KB)
📄 attributes.pyo(55.32 KB)
📄 base.py(14.32 KB)
📄 base.pyc(15.11 KB)
📄 base.pyo(15.11 KB)
📄 collections.py(51.18 KB)
📄 collections.pyc(62.31 KB)
📄 collections.pyo(62.1 KB)
📄 dependency.py(45.11 KB)
📄 dependency.pyc(28.68 KB)
📄 dependency.pyo(28.59 KB)
📄 deprecated_interfaces.py(17.83 KB)
📄 deprecated_interfaces.pyc(21.11 KB)
📄 deprecated_interfaces.pyo(21.11 KB)
📄 descriptor_props.py(24.95 KB)
📄 descriptor_props.pyc(28.1 KB)
📄 descriptor_props.pyo(28.1 KB)
📄 dynamic.py(12.84 KB)
📄 dynamic.pyc(14.42 KB)
📄 dynamic.pyo(14.42 KB)
📄 evaluator.py(4.7 KB)
📄 evaluator.pyc(7.19 KB)
📄 evaluator.pyo(7.19 KB)
📄 events.py(83.09 KB)
📄 events.pyc(91.58 KB)
📄 events.pyo(91.58 KB)
📄 exc.py(5.31 KB)
📄 exc.pyc(7.75 KB)
📄 exc.pyo(7.75 KB)
📄 identity.py(10.01 KB)
📄 identity.pyc(14.76 KB)
📄 identity.pyo(14.76 KB)
📄 instrumentation.py(17.1 KB)
📄 instrumentation.pyc(20.65 KB)
📄 instrumentation.pyo(20.57 KB)
📄 interfaces.py(21.56 KB)
📄 interfaces.pyc(26.11 KB)
📄 interfaces.pyo(26.11 KB)
📄 loading.py(25.29 KB)
📄 loading.pyc(15.28 KB)
📄 loading.pyo(15.28 KB)
📄 mapper.py(116.54 KB)
📄 mapper.pyc(92.81 KB)
📄 mapper.pyo(92.66 KB)
📄 path_registry.py(7.57 KB)
📄 path_registry.pyc(12.58 KB)
📄 path_registry.pyo(12.58 KB)
📄 persistence.py(52.41 KB)
📄 persistence.pyc(41.25 KB)
📄 persistence.pyo(41.25 KB)
📄 properties.py(10.21 KB)
📄 properties.pyc(11.3 KB)
📄 properties.pyo(11.3 KB)
📄 query.py(150.98 KB)
📄 query.pyc(143.06 KB)
📄 query.pyo(143.02 KB)
📄 relationships.py(115.47 KB)
📄 relationships.pyc(100.36 KB)
📄 relationships.pyo(100.33 KB)
📄 scoping.py(6.27 KB)
📄 scoping.pyc(7.5 KB)
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📄 session.py(117.07 KB)
📄 session.pyc(110.77 KB)
📄 session.pyo(110.6 KB)
📄 state.py(26.85 KB)
📄 state.pyc(28.61 KB)
📄 state.pyo(28.61 KB)
📄 strategies.py(60.93 KB)
📄 strategies.pyc(45.88 KB)
📄 strategies.pyo(45.54 KB)
📄 strategy_options.py(35.07 KB)
📄 strategy_options.pyc(36.87 KB)
📄 strategy_options.pyo(36.87 KB)
📄 sync.py(5.32 KB)
📄 sync.pyc(4.48 KB)
📄 sync.pyo(4.48 KB)
📄 unitofwork.py(23.43 KB)
📄 unitofwork.pyc(23.57 KB)
📄 unitofwork.pyo(23.49 KB)
📄 util.py(37.64 KB)
📄 util.pyc(38.09 KB)
📄 util.pyo(37.94 KB)

Editing: exc.py

# orm/exc.py
# Copyright (C) 2005-2017 the SQLAlchemy authors and contributors
# <see AUTHORS file>
#
# This module is part of SQLAlchemy and is released under
# the MIT License: http://www.opensource.org/licenses/mit-license.php

"""SQLAlchemy ORM exceptions."""
from .. import exc as sa_exc, util

NO_STATE = (AttributeError, KeyError)
"""Exception types that may be raised by instrumentation implementations."""

class StaleDataError(sa_exc.SQLAlchemyError):
    """An operation encountered database state that is unaccounted for.

Conditions which cause this to happen include:

* A flush may have attempted to update or delete rows
      and an unexpected number of rows were matched during
      the UPDATE or DELETE statement.   Note that when
      version_id_col is used, rows in UPDATE or DELETE statements
      are also matched against the current known version
      identifier.

* A mapped object with version_id_col was refreshed,
      and the version number coming back from the database does
      not match that of the object itself.

* A object is detached from its parent object, however
      the object was previously attached to a different parent
      identity which was garbage collected, and a decision
      cannot be made if the new parent was really the most
      recent "parent".

.. versionadded:: 0.7.4

"""

ConcurrentModificationError = StaleDataError

class FlushError(sa_exc.SQLAlchemyError):
    """A invalid condition was detected during flush()."""

class UnmappedError(sa_exc.InvalidRequestError):
    """Base for exceptions that involve expected mappings not present."""

class ObjectDereferencedError(sa_exc.SQLAlchemyError):
    """An operation cannot complete due to an object being garbage
    collected.

"""

class DetachedInstanceError(sa_exc.SQLAlchemyError):
    """An attempt to access unloaded attributes on a
    mapped instance that is detached."""

class UnmappedInstanceError(UnmappedError):
    """An mapping operation was requested for an unknown instance."""

@util.dependencies("sqlalchemy.orm.base")
    def __init__(self, base, obj, msg=None):
        if not msg:
            try:
                base.class_mapper(type(obj))
                name = _safe_cls_name(type(obj))
                msg = ("Class %r is mapped, but this instance lacks "
                       "instrumentation.  This occurs when the instance "
                       "is created before sqlalchemy.orm.mapper(%s) "
                       "was called." % (name, name))
            except UnmappedClassError:
                msg = _default_unmapped(type(obj))
                if isinstance(obj, type):
                    msg += (
                        '; was a class (%s) supplied where an instance was '
                        'required?' % _safe_cls_name(obj))
        UnmappedError.__init__(self, msg)

def __reduce__(self):
        return self.__class__, (None, self.args[0])

class UnmappedClassError(UnmappedError):
    """An mapping operation was requested for an unknown class."""

def __init__(self, cls, msg=None):
        if not msg:
            msg = _default_unmapped(cls)
        UnmappedError.__init__(self, msg)

def __reduce__(self):
        return self.__class__, (None, self.args[0])

class ObjectDeletedError(sa_exc.InvalidRequestError):
    """A refresh operation failed to retrieve the database
    row corresponding to an object's known primary key identity.

A refresh operation proceeds when an expired attribute is
    accessed on an object, or when :meth:`.Query.get` is
    used to retrieve an object which is, upon retrieval, detected
    as expired.   A SELECT is emitted for the target row
    based on primary key; if no row is returned, this
    exception is raised.

The true meaning of this exception is simply that
    no row exists for the primary key identifier associated
    with a persistent object.   The row may have been
    deleted, or in some cases the primary key updated
    to a new value, outside of the ORM's management of the target
    object.

"""
    @util.dependencies("sqlalchemy.orm.base")
    def __init__(self, base, state, msg=None):
        if not msg:
            msg = "Instance '%s' has been deleted, or its "\
                "row is otherwise not present." % base.state_str(state)

sa_exc.InvalidRequestError.__init__(self, msg)

def __reduce__(self):
        return self.__class__, (None, self.args[0])

class UnmappedColumnError(sa_exc.InvalidRequestError):
    """Mapping operation was requested on an unknown column."""

class NoResultFound(sa_exc.InvalidRequestError):
    """A database result was required but none was found."""

class MultipleResultsFound(sa_exc.InvalidRequestError):
    """A single database result was required but more than one were found."""

def _safe_cls_name(cls):
    try:
        cls_name = '.'.join((cls.__module__, cls.__name__))
    except AttributeError:
        cls_name = getattr(cls, '__name__', None)
        if cls_name is None:
            cls_name = repr(cls)
    return cls_name

@util.dependencies("sqlalchemy.orm.base")
def _default_unmapped(base, cls):
    try:
        mappers = base.manager_of_class(cls).mappers
    except NO_STATE:
        mappers = {}
    except TypeError:
        mappers = {}
    name = _safe_cls_name(cls)

if not mappers:
        return "Class '%s' is not mapped" % name

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