diff --git a/trytond/convert.py b/trytond/convert.py
index 4841ef1c50..2306e77690 100644
--- a/trytond/convert.py
+++ b/trytond/convert.py
@@ -9,10 +9,10 @@ import re
 from collections import defaultdict
 from decimal import Decimal
 
-from . import __version__
-from .tools import grouped_slice
-from .transaction import Transaction
-from .pyson import PYSONEncoder, CONTEXT
+from trytond import __version__
+from trytond.pyson import PYSONEncoder, CONTEXT
+from trytond.tools import grouped_slice
+from trytond.transaction import Transaction
 
 logger = logging.getLogger(__name__)
 
diff --git a/trytond/ir/__init__.py b/trytond/ir/__init__.py
index 33dcc0ab35..cb003cb51d 100644
--- a/trytond/ir/__init__.py
+++ b/trytond/ir/__init__.py
@@ -1,6 +1,6 @@
 # This file is part of Tryton.  The COPYRIGHT file at the top level of
 # this repository contains the full copyright notices and license terms.
-from ..pool import Pool
+from trytond.pool import Pool
 from . import configuration
 from . import translation
 from . import sequence
diff --git a/trytond/ir/action.py b/trytond/ir/action.py
index 96e8252dc0..cb5aef9075 100644
--- a/trytond/ir/action.py
+++ b/trytond/ir/action.py
@@ -7,25 +7,19 @@ from functools import partial
 
 from sql import Null
 
+from trytond.cache import Cache
 from trytond.config import config
 from trytond.i18n import gettext
-from trytond.model.exceptions import ValidationError
-from trytond.pyson import PYSONEncoder
-from ..model import (
+from trytond.model import (
     ModelView, ModelStorage, ModelSQL, DeactivableMixin, fields,
     sequence_ordered)
-from ..tools import file_open
-from ..pyson import PYSONDecoder, PYSON, Eval
-from ..transaction import Transaction
-from ..pool import Pool
-from ..cache import Cache
-from ..rpc import RPC
-
-__all__ = [
-    'Action', 'ActionKeyword', 'ActionReport',
-    'ActionActWindow', 'ActionActWindowView', 'ActionActWindowDomain',
-    'ActionWizard', 'ActionURL',
-    ]
+from trytond.model.exceptions import ValidationError
+from trytond.pool import Pool
+from trytond.pyson import PYSONDecoder, PYSON, Eval
+from trytond.pyson import PYSONEncoder
+from trytond.rpc import RPC
+from trytond.tools import file_open
+from trytond.transaction import Transaction
 
 if not config.get('html', 'plugins-ir.action.report-report_content_html'):
     config.set(
diff --git a/trytond/ir/attachment.py b/trytond/ir/attachment.py
index f0b6ca499b..7a25c64e9f 100644
--- a/trytond/ir/attachment.py
+++ b/trytond/ir/attachment.py
@@ -3,12 +3,12 @@
 from sql import Null
 from sql.operators import Concat
 
+from trytond.config import config
 from trytond.i18n import lazy_gettext
-from ..model import ModelView, ModelSQL, fields
-from ..transaction import Transaction
-from ..pyson import Eval
+from trytond.model import ModelView, ModelSQL, fields
+from trytond.pyson import Eval
+from trytond.transaction import Transaction
 from .resource import ResourceMixin, resource_copy
-from ..config import config
 
 __all__ = ['AttachmentCopyMixin']
 
diff --git a/trytond/ir/cache.py b/trytond/ir/cache.py
index b38a6b7bf5..d980355452 100644
--- a/trytond/ir/cache.py
+++ b/trytond/ir/cache.py
@@ -1,10 +1,6 @@
 # This file is part of Tryton.  The COPYRIGHT file at the top level of
 # this repository contains the full copyright notices and license terms.
-from ..model import ModelSQL, fields
-
-__all__ = [
-    'Cache',
-    ]
+from trytond.model import ModelSQL, fields
 
 
 class Cache(ModelSQL):
diff --git a/trytond/ir/calendar_.py b/trytond/ir/calendar_.py
index a4153f9662..08f3cc876f 100644
--- a/trytond/ir/calendar_.py
+++ b/trytond/ir/calendar_.py
@@ -1,10 +1,10 @@
 # This file is part of Tryton.  The COPYRIGHT file at the top level of
 # this repository contains the full copyright notices and license terms.
 
-from ..cache import Cache
-from ..model import ModelSQL, fields, Unique
-from ..rpc import RPC
-from ..transaction import Transaction
+from trytond.cache import Cache
+from trytond.model import ModelSQL, fields, Unique
+from trytond.rpc import RPC
+from trytond.transaction import Transaction
 
 
 class _Calendar(ModelSQL):
diff --git a/trytond/ir/configuration.py b/trytond/ir/configuration.py
index 5e580725dd..2dd408e93f 100644
--- a/trytond/ir/configuration.py
+++ b/trytond/ir/configuration.py
@@ -1,10 +1,8 @@
 # This file is part of Tryton.  The COPYRIGHT file at the top level of
 # this repository contains the full copyright notices and license terms.
-from ..model import ModelSQL, ModelSingleton, fields
-from ..cache import Cache
-from ..config import config
-
-__all__ = ['Configuration']
+from trytond.cache import Cache
+from trytond.config import config
+from trytond.model import ModelSQL, ModelSingleton, fields
 
 
 class Configuration(ModelSingleton, ModelSQL):
diff --git a/trytond/ir/cron.py b/trytond/ir/cron.py
index b4cc48d3ac..c088de311a 100644
--- a/trytond/ir/cron.py
+++ b/trytond/ir/cron.py
@@ -5,12 +5,13 @@ import time
 from dateutil.relativedelta import relativedelta
 import logging
 
-from ..model import ModelView, ModelSQL, DeactivableMixin, fields, dualmethod
-from ..transaction import Transaction
-from ..pool import Pool
 from trytond import backend
 from trytond.config import config
+from trytond.model import (
+    ModelView, ModelSQL, DeactivableMixin, fields, dualmethod)
+from trytond.pool import Pool
 from trytond.pyson import Eval
+from trytond.transaction import Transaction
 from trytond.worker import run_task
 
 logger = logging.getLogger(__name__)
diff --git a/trytond/ir/date.py b/trytond/ir/date.py
index 41624ce3a7..e1fb0a4197 100644
--- a/trytond/ir/date.py
+++ b/trytond/ir/date.py
@@ -2,12 +2,8 @@
 # this repository contains the full copyright notices and license terms.
 import datetime
 
-from ..model import Model
-from ..rpc import RPC
-
-__all__ = [
-    'Date',
-    ]
+from trytond.model import Model
+from trytond.rpc import RPC
 
 
 class Date(Model):
diff --git a/trytond/ir/export.py b/trytond/ir/export.py
index f3c17851fc..55c0cd849b 100644
--- a/trytond/ir/export.py
+++ b/trytond/ir/export.py
@@ -1,7 +1,7 @@
 # This file is part of Tryton.  The COPYRIGHT file at the top level of
 # this repository contains the full copyright notices and license terms.
 "Exports"
-from ..model import ModelView, ModelSQL, fields
+from trytond.model import ModelView, ModelSQL, fields
 from trytond.pool import Pool
 from trytond.rpc import RPC
 
diff --git a/trytond/ir/lang.py b/trytond/ir/lang.py
index a9af110662..a097e9622d 100644
--- a/trytond/ir/lang.py
+++ b/trytond/ir/lang.py
@@ -7,15 +7,15 @@ from ast import literal_eval
 
 from sql import Table
 
-from ..model import ModelView, ModelSQL, DeactivableMixin, fields, Check
-from ..modules import create_graph, load_translations
-from ..cache import Cache
-from ..transaction import Transaction
-from ..pool import Pool
-from ..pyson import Eval
-from ..exceptions import UserError
-from ..i18n import gettext
-from ..wizard import Wizard, StateView, Button, StateTransition
+from trytond.cache import Cache
+from trytond.exceptions import UserError
+from trytond.i18n import gettext
+from trytond.model import ModelView, ModelSQL, DeactivableMixin, fields, Check
+from trytond.modules import create_graph, load_translations
+from trytond.pool import Pool
+from trytond.pyson import Eval
+from trytond.transaction import Transaction
+from trytond.wizard import Wizard, StateView, Button, StateTransition
 
 Transaction.cache_keys.add('translate_name')
 
diff --git a/trytond/ir/message.py b/trytond/ir/message.py
index 4b69f46d4b..9aaa38516c 100644
--- a/trytond/ir/message.py
+++ b/trytond/ir/message.py
@@ -1,13 +1,11 @@
 # This file is part of Tryton.  The COPYRIGHT file at the top level of
 # this repository contains the full copyright notices and license terms.
 
-from ..model import ModelView, ModelSQL, fields
+from trytond.model import ModelView, ModelSQL, fields
 from trytond.cache import Cache
 from trytond.pool import Pool
 from trytond.transaction import Transaction
 
-__all__ = ['Message']
-
 
 class Message(ModelSQL, ModelView):
     "Message"
diff --git a/trytond/ir/model.py b/trytond/ir/model.py
index b4fa7a977a..a4ec56c5c2 100644
--- a/trytond/ir/model.py
+++ b/trytond/ir/model.py
@@ -11,27 +11,22 @@ from sql.conditionals import Case
 from collections import defaultdict
 from itertools import groupby
 
+from trytond.cache import Cache
 from trytond.i18n import gettext
+from trytond.model import (
+    ModelView, ModelSQL, Workflow, DeactivableMixin, fields, Unique,
+    EvalEnvironment)
 from trytond.model.exceptions import AccessError, ValidationError
-from ..model import (ModelView, ModelSQL, Workflow, DeactivableMixin, fields,
-    Unique, EvalEnvironment)
-from ..report import Report
-from ..wizard import Wizard, StateView, StateAction, Button
-from ..transaction import Transaction
-from ..cache import Cache
-from ..pool import Pool
-from ..pyson import Bool, Eval, PYSONDecoder
-from ..rpc import RPC
-from ..protocols.jsonrpc import JSONDecoder, JSONEncoder
-from ..tools import is_instance_method, cursor_dict, grouped_slice
-from ..tools.string_ import StringMatcher
+from trytond.pool import Pool
+from trytond.protocols.jsonrpc import JSONDecoder, JSONEncoder
+from trytond.pyson import Bool, Eval, PYSONDecoder
+from trytond.report import Report
+from trytond.rpc import RPC
+from trytond.tools import is_instance_method, cursor_dict, grouped_slice
+from trytond.tools.string_ import StringMatcher
+from trytond.transaction import Transaction
+from trytond.wizard import Wizard, StateView, StateAction, Button
 
-__all__ = [
-    'Model', 'ModelField', 'ModelAccess', 'ModelFieldAccess', 'ModelButton',
-    'ModelButtonRule', 'ModelButtonClick', 'ModelButtonReset',
-    'ModelData', 'PrintModelGraphStart', 'PrintModelGraph', 'ModelGraph',
-    'ModelWorkflowGraph',
-    ]
 logger = logging.getLogger(__name__)
 
 
diff --git a/trytond/ir/module.py b/trytond/ir/module.py
index e3a945a9c5..221326d5c0 100644
--- a/trytond/ir/module.py
+++ b/trytond/ir/module.py
@@ -18,14 +18,6 @@ from trytond.transaction import Transaction
 from trytond.pyson import Eval
 from trytond.rpc import RPC
 
-__all__ = [
-    'Module', 'ModuleDependency', 'ModuleConfigWizardItem',
-    'ModuleConfigWizardFirst', 'ModuleConfigWizardOther',
-    'ModuleConfigWizardDone', 'ModuleConfigWizard',
-    'ModuleActivateUpgradeStart', 'ModuleActivateUpgradeDone',
-    'ModuleActivateUpgrade', 'ModuleConfig',
-    ]
-
 
 class DeactivateDependencyError(UserError):
     pass
diff --git a/trytond/ir/note.py b/trytond/ir/note.py
index 6ac2838191..bbc85ad1b4 100644
--- a/trytond/ir/note.py
+++ b/trytond/ir/note.py
@@ -6,11 +6,11 @@ from sql import Null
 from sql.conditionals import Case
 
 from trytond.i18n import lazy_gettext
-from ..model import ModelView, ModelSQL, ModelStorage, fields
-from ..pool import Pool
-from ..transaction import Transaction
-from ..tools import grouped_slice, reduce_ids
-from ..pyson import Eval
+from trytond.model import ModelView, ModelSQL, ModelStorage, fields
+from trytond.pool import Pool
+from trytond.pyson import Eval
+from trytond.tools import grouped_slice, reduce_ids
+from trytond.transaction import Transaction
 from .resource import ResourceMixin, resource_copy
 
 __all__ = ['NoteCopyMixin']
diff --git a/trytond/ir/resource.py b/trytond/ir/resource.py
index c903dad04c..a327243af3 100644
--- a/trytond/ir/resource.py
+++ b/trytond/ir/resource.py
@@ -3,10 +3,10 @@
 from sql.conditionals import Coalesce
 
 from trytond.i18n import lazy_gettext
-from ..model import ModelStorage, ModelView, fields
-from ..pool import Pool
-from ..transaction import Transaction
-from ..pyson import Eval
+from trytond.model import ModelStorage, ModelView, fields
+from trytond.pool import Pool
+from trytond.pyson import Eval
+from trytond.transaction import Transaction
 
 __all__ = ['ResourceMixin', 'resource_copy']
 
diff --git a/trytond/ir/rule.py b/trytond/ir/rule.py
index c830c5e745..1d6a4e2029 100644
--- a/trytond/ir/rule.py
+++ b/trytond/ir/rule.py
@@ -4,17 +4,13 @@ from collections import defaultdict
 
 from sql import Literal
 
+from trytond.cache import Cache
 from trytond.i18n import gettext
+from trytond.model import ModelView, ModelSQL, fields, EvalEnvironment, Check
 from trytond.model.exceptions import ValidationError
-from ..model import ModelView, ModelSQL, fields, EvalEnvironment, Check
-from ..transaction import Transaction
-from ..cache import Cache
-from ..pool import Pool
-from ..pyson import PYSONDecoder
-
-__all__ = [
-    'RuleGroup', 'Rule',
-    ]
+from trytond.pool import Pool
+from trytond.pyson import PYSONDecoder
+from trytond.transaction import Transaction
 
 
 class DomainError(ValidationError):
diff --git a/trytond/ir/sequence.py b/trytond/ir/sequence.py
index 3e343fa712..1effc28199 100644
--- a/trytond/ir/sequence.py
+++ b/trytond/ir/sequence.py
@@ -5,18 +5,14 @@ import time
 
 from sql import Literal, For
 
+from trytond import backend
 from trytond.exceptions import UserError
+from trytond.i18n import gettext
+from trytond.model import ModelView, ModelSQL, DeactivableMixin, fields, Check
 from trytond.model.exceptions import ValidationError
-from ..model import ModelView, ModelSQL, DeactivableMixin, fields, Check
-from ..pyson import Eval, And
-from ..transaction import Transaction
-from ..pool import Pool
-from ..i18n import gettext
-from .. import backend
-
-__all__ = [
-    'SequenceType', 'Sequence', 'SequenceStrict',
-    ]
+from trytond.pool import Pool
+from trytond.pyson import Eval, And
+from trytond.transaction import Transaction
 
 sql_sequence = backend.Database.has_sequence()
 
diff --git a/trytond/ir/session.py b/trytond/ir/session.py
index a79509d936..d2acd1ebbd 100644
--- a/trytond/ir/session.py
+++ b/trytond/ir/session.py
@@ -15,10 +15,6 @@ except ImportError:
 from trytond.model import ModelSQL, fields
 from trytond.config import config
 
-__all__ = [
-    'Session', 'SessionWizard',
-    ]
-
 
 class Session(ModelSQL):
     "Session"
diff --git a/trytond/ir/translation.py b/trytond/ir/translation.py
index 562b0e1bfc..c9ae022848 100644
--- a/trytond/ir/translation.py
+++ b/trytond/ir/translation.py
@@ -17,28 +17,20 @@ from genshi.filters.i18n import extract as genshi_extract
 from relatorio.reporting import MIMETemplateLoader
 from relatorio.templates.opendocument import get_zip_file
 
+from trytond.cache import Cache
+from trytond.config import config
 from trytond.exceptions import UserError
 from trytond.i18n import gettext
+from trytond.model import ModelView, ModelSQL, fields
+from trytond.pool import Pool
+from trytond.pyson import PYSONEncoder, Eval
+from trytond.tools import file_open, grouped_slice, cursor_dict
 from trytond.tools.string_ import LazyString
-from ..model import ModelView, ModelSQL, fields
-from ..wizard import Wizard, StateView, StateTransition, StateAction, \
-    Button
-from ..tools import file_open, grouped_slice, cursor_dict
-from ..pyson import PYSONEncoder, Eval
-from ..transaction import Transaction
-from ..pool import Pool
-from ..cache import Cache
-from ..config import config
+from trytond.transaction import Transaction
+from trytond.wizard import (
+    Wizard, StateView, StateTransition, StateAction, Button)
 
-from trytond.ir.lang import get_parent_language as get_parent
-
-__all__ = ['Translation',
-    'TranslationSetStart', 'TranslationSetSucceed', 'TranslationSet',
-    'TranslationCleanStart', 'TranslationCleanSucceed', 'TranslationClean',
-    'TranslationUpdateStart', 'TranslationUpdate',
-    'TranslationExportStart', 'TranslationExportResult', 'TranslationExport',
-    'TranslationReport',
-    ]
+from .lang import get_parent_language as get_parent
 
 TRANSLATION_TYPE = [
     ('field', 'Field'),
diff --git a/trytond/ir/trigger.py b/trytond/ir/trigger.py
index 794a8f7404..021574ab41 100644
--- a/trytond/ir/trigger.py
+++ b/trytond/ir/trigger.py
@@ -7,20 +7,16 @@ from sql.aggregate import Count, Max
 from sql.functions import CurrentTimestamp
 from sql.operators import Concat
 
-from trytond.model.exceptions import ValidationError
+from trytond.cache import Cache
 from trytond.i18n import gettext
-from ..model import (
+from trytond.model import (
     ModelView, ModelSQL, DeactivableMixin, fields, EvalEnvironment, Check)
-from ..pyson import Eval, PYSONDecoder
-from ..tools import grouped_slice
-from ..tools import reduce_ids
-from ..transaction import Transaction
-from ..cache import Cache
-from ..pool import Pool
-
-__all__ = [
-    'Trigger', 'TriggerLog',
-    ]
+from trytond.model.exceptions import ValidationError
+from trytond.pool import Pool
+from trytond.pyson import Eval, PYSONDecoder
+from trytond.tools import grouped_slice
+from trytond.tools import reduce_ids
+from trytond.transaction import Transaction
 
 
 class ConditionError(ValidationError):
diff --git a/trytond/ir/ui/icon.py b/trytond/ir/ui/icon.py
index ec39237cf4..19b8efcf02 100644
--- a/trytond/ir/ui/icon.py
+++ b/trytond/ir/ui/icon.py
@@ -8,10 +8,6 @@ from trytond.tools import file_open
 from trytond.transaction import Transaction
 from trytond.rpc import RPC
 
-__all__ = [
-    'Icon',
-    ]
-
 
 class Icon(sequence_ordered(), ModelSQL, ModelView):
     'Icon'
diff --git a/trytond/ir/ui/menu.py b/trytond/ir/ui/menu.py
index 53be683f36..1dd1d98b8b 100644
--- a/trytond/ir/ui/menu.py
+++ b/trytond/ir/ui/menu.py
@@ -9,10 +9,6 @@ from trytond.tools import grouped_slice
 from trytond.pool import Pool
 from trytond.rpc import RPC
 
-__all__ = [
-    'UIMenu', 'UIMenuFavorite',
-    ]
-
 
 def one_in(i, j):
     """Check the presence of an element of setA in setB
diff --git a/trytond/ir/ui/view.py b/trytond/ir/ui/view.py
index 437095a7ce..9d1e1448c6 100644
--- a/trytond/ir/ui/view.py
+++ b/trytond/ir/ui/view.py
@@ -17,11 +17,6 @@ from trytond.pool import Pool
 from trytond.cache import Cache
 from trytond.rpc import RPC
 
-__all__ = [
-    'View', 'ShowViewStart', 'ShowView',
-    'ViewTreeWidth', 'ViewTreeState', 'ViewSearch',
-    ]
-
 logger = logging.getLogger(__name__)
 
 
diff --git a/trytond/model/fields/binary.py b/trytond/model/fields/binary.py
index f6db1c89bc..4fb353b135 100644
--- a/trytond/model/fields/binary.py
+++ b/trytond/model/fields/binary.py
@@ -2,10 +2,10 @@
 # this repository contains the full copyright notices and license terms.
 from sql import Column, Null
 
+from trytond.filestore import filestore
+from trytond.tools import grouped_slice, reduce_ids
+from trytond.transaction import Transaction
 from .field import Field
-from ...transaction import Transaction
-from ...tools import grouped_slice, reduce_ids
-from ...filestore import filestore
 
 
 class Binary(Field):
diff --git a/trytond/model/fields/char.py b/trytond/model/fields/char.py
index fedf452a3f..a309c4fb2a 100644
--- a/trytond/model/fields/char.py
+++ b/trytond/model/fields/char.py
@@ -2,9 +2,9 @@
 # this repository contains the full copyright notices and license terms.
 import warnings
 
+from trytond.rpc import RPC
 from trytond.transaction import Transaction
 from .field import Field, FieldTranslate, size_validate
-from ...rpc import RPC
 
 
 class Char(FieldTranslate):
diff --git a/trytond/model/fields/date.py b/trytond/model/fields/date.py
index 54597f88b7..9f8e288fcd 100644
--- a/trytond/model/fields/date.py
+++ b/trytond/model/fields/date.py
@@ -4,8 +4,8 @@ import datetime
 
 from sql.functions import Function
 
+from trytond import backend
 from trytond.pyson import PYSONEncoder
-from ... import backend
 from .field import Field
 
 
diff --git a/trytond/model/fields/dict.py b/trytond/model/fields/dict.py
index b34c92019c..849cc9f2ff 100644
--- a/trytond/model/fields/dict.py
+++ b/trytond/model/fields/dict.py
@@ -6,11 +6,11 @@ import json
 from sql import operators, Literal, Select, CombiningQuery, Cast, Null
 
 from trytond import backend
+from trytond.pool import Pool
+from trytond.protocols.jsonrpc import JSONDecoder, JSONEncoder
+from trytond.tools import grouped_slice
 from trytond.transaction import Transaction
 from .field import Field, SQL_OPERATORS
-from ...protocols.jsonrpc import JSONDecoder, JSONEncoder
-from ...pool import Pool
-from ...tools import grouped_slice
 
 # Use canonical form
 dumps = partial(
diff --git a/trytond/model/fields/field.py b/trytond/model/fields/field.py
index 0644e7321b..aeb85ff346 100644
--- a/trytond/model/fields/field.py
+++ b/trytond/model/fields/field.py
@@ -8,14 +8,13 @@ from sql import (operators, Column, Literal, Select, CombiningQuery, Null,
 from sql.conditionals import Coalesce, NullIf
 from sql.operators import Concat
 
-from trytond.pyson import PYSON, PYSONEncoder, PYSONDecoder, Eval
+from trytond.cache import LRUDictTransaction
 from trytond.const import OPERATORS
+from trytond.pool import Pool
+from trytond.pyson import PYSON, PYSONEncoder, PYSONDecoder, Eval
+from trytond.rpc import RPC
 from trytond.tools.string_ import StringPartitioned, LazyString
 from trytond.transaction import Transaction
-from trytond.pool import Pool
-from trytond.cache import LRUDictTransaction
-
-from ...rpc import RPC
 
 
 def domain_validate(value):
diff --git a/trytond/model/fields/float.py b/trytond/model/fields/float.py
index 30fff4dc41..0534dd125f 100644
--- a/trytond/model/fields/float.py
+++ b/trytond/model/fields/float.py
@@ -1,8 +1,7 @@
 # This file is part of Tryton.  The COPYRIGHT file at the top level of
 # this repository contains the full copyright notices and license terms.
-from trytond.pyson import PYSONEncoder
+from trytond.pyson import PYSONEncoder, PYSON
 from .field import Field
-from ...pyson import PYSON
 
 
 def digits_validate(value):
diff --git a/trytond/model/fields/many2many.py b/trytond/model/fields/many2many.py
index 48351be36f..a16008eb58 100644
--- a/trytond/model/fields/many2many.py
+++ b/trytond/model/fields/many2many.py
@@ -7,12 +7,12 @@ from sql import Cast, Literal, Null
 from sql.functions import Substring, Position
 from sql.conditionals import Coalesce
 
+from trytond.pool import Pool
 from trytond.pyson import PYSONEncoder
+from trytond.tools import grouped_slice
+from trytond.transaction import Transaction
 from .field import (Field, size_validate, instanciate_values, domain_validate,
     search_order_validate, context_validate, instantiate_context)
-from ...pool import Pool
-from ...tools import grouped_slice
-from ...transaction import Transaction
 
 
 class Many2Many(Field):
diff --git a/trytond/model/fields/many2one.py b/trytond/model/fields/many2one.py
index 623442693d..628c0be969 100644
--- a/trytond/model/fields/many2one.py
+++ b/trytond/model/fields/many2one.py
@@ -5,12 +5,12 @@ from sql.aggregate import Max
 from sql.conditionals import Coalesce
 from sql.operators import Or
 
+from trytond.pool import Pool
 from trytond.pyson import PYSONEncoder
+from trytond.tools import reduce_ids
+from trytond.transaction import Transaction
 from .field import (Field, search_order_validate, context_validate,
     with_inactive_records, instantiate_context)
-from ...pool import Pool
-from ...tools import reduce_ids
-from ...transaction import Transaction
 
 
 class Many2One(Field):
diff --git a/trytond/model/fields/numeric.py b/trytond/model/fields/numeric.py
index d7d17b6fe2..536c2d800a 100644
--- a/trytond/model/fields/numeric.py
+++ b/trytond/model/fields/numeric.py
@@ -3,7 +3,7 @@
 from decimal import Decimal
 from sql import Cast, Literal, Select, CombiningQuery, As
 
-from ... import backend
+from trytond import backend
 from .float import Float
 
 
diff --git a/trytond/model/fields/one2many.py b/trytond/model/fields/one2many.py
index 14145e1d5c..286ad164d8 100644
--- a/trytond/model/fields/one2many.py
+++ b/trytond/model/fields/one2many.py
@@ -6,12 +6,12 @@ from sql import Cast, Literal
 from sql.functions import Substring, Position
 from sql.conditionals import Coalesce
 
+from trytond.pool import Pool
 from trytond.pyson import PYSONEncoder
+from trytond.tools import grouped_slice
+from trytond.transaction import Transaction
 from .field import (Field, size_validate, instanciate_values, domain_validate,
     search_order_validate, context_validate, instantiate_context)
-from ...pool import Pool
-from ...tools import grouped_slice
-from ...transaction import Transaction
 
 
 class One2Many(Field):
diff --git a/trytond/model/fields/reference.py b/trytond/model/fields/reference.py
index 78f2006807..fec7bdc2ce 100644
--- a/trytond/model/fields/reference.py
+++ b/trytond/model/fields/reference.py
@@ -5,13 +5,13 @@ import warnings
 from sql import Cast, Literal, Query, Expression
 from sql.functions import Substring, Position
 
+from trytond.pool import Pool
 from trytond.pyson import PYSONEncoder
+from trytond.rpc import RPC
+from trytond.transaction import Transaction
+from .selection import SelectionMixin
 from .field import (Field, search_order_validate, context_validate,
     with_inactive_records, instantiate_context)
-from .selection import SelectionMixin
-from ...transaction import Transaction
-from ...pool import Pool
-from ...rpc import RPC
 
 
 class Reference(SelectionMixin, Field):
diff --git a/trytond/model/fields/selection.py b/trytond/model/fields/selection.py
index 8ac21b6161..c6d5c63141 100644
--- a/trytond/model/fields/selection.py
+++ b/trytond/model/fields/selection.py
@@ -5,11 +5,11 @@ import warnings
 from sql.conditionals import Case
 
 from trytond.pool import Pool
-from ...transaction import Transaction
-from ...tools import is_instance_method
+from trytond.rpc import RPC
+from trytond.tools import is_instance_method
 from trytond.tools.string_ import LazyString
+from trytond.transaction import Transaction
 from .field import Field
-from ...rpc import RPC
 
 
 class SelectionMixin(Field):
diff --git a/trytond/model/multivalue.py b/trytond/model/multivalue.py
index 5cf45d4a61..af8f55119a 100644
--- a/trytond/model/multivalue.py
+++ b/trytond/model/multivalue.py
@@ -1,6 +1,6 @@
 # This file is part of Tryton.  The COPYRIGHT file at the toplevel of this
 # repository contains the full copyright notices and license terms.
-from ..pool import Pool
+from trytond.pool import Pool
 from .model import Model
 from .match import MatchMixin
 
diff --git a/trytond/res/__init__.py b/trytond/res/__init__.py
index dc75b653e0..cb4fd486aa 100644
--- a/trytond/res/__init__.py
+++ b/trytond/res/__init__.py
@@ -1,6 +1,6 @@
 # This file is part of Tryton.  The COPYRIGHT file at the top level of
 # this repository contains the full copyright notices and license terms.
-from ..pool import Pool
+from trytond.pool import Pool
 
 from . import group
 from . import user
diff --git a/trytond/res/group.py b/trytond/res/group.py
index 863a9d64ed..b8e16877b7 100644
--- a/trytond/res/group.py
+++ b/trytond/res/group.py
@@ -1,9 +1,9 @@
 # This file is part of Tryton.  The COPYRIGHT file at the top level of
 # this repository contains the full copyright notices and license terms.
 from itertools import chain
-from ..model import ModelView, ModelSQL, DeactivableMixin, fields, Unique
-from ..pool import Pool
-from ..tools import grouped_slice
+from trytond.model import ModelView, ModelSQL, DeactivableMixin, fields, Unique
+from trytond.pool import Pool
+from trytond.tools import grouped_slice
 
 
 class MenuMany2Many(fields.Many2Many):
diff --git a/trytond/res/ir.py b/trytond/res/ir.py
index 381d35bc65..1ac53279b0 100644
--- a/trytond/res/ir.py
+++ b/trytond/res/ir.py
@@ -1,7 +1,7 @@
 # This file is part of Tryton.  The COPYRIGHT file at the top level of
 # this repository contains the full copyright notices and license terms.
-from ..model import ModelSQL, DeactivableMixin, fields
-from ..pool import Pool, PoolMeta
+from trytond.model import ModelSQL, DeactivableMixin, fields
+from trytond.pool import Pool, PoolMeta
 from trytond.pyson import Eval
 
 
diff --git a/trytond/res/user.py b/trytond/res/user.py
index b11fa5464b..82d04c4eb1 100644
--- a/trytond/res/user.py
+++ b/trytond/res/user.py
@@ -37,28 +37,23 @@ try:
 except ImportError:
     bcrypt = None
 
+from trytond.cache import Cache
+from trytond.config import config
+from trytond.exceptions import LoginException, RateLimitException
 from trytond.exceptions import UserError
 from trytond.i18n import gettext
-from ..model import (
+from trytond.model import (
     ModelView, ModelSQL, Workflow, DeactivableMixin, fields, Unique)
-from ..wizard import Wizard, StateView, Button, StateTransition
-from ..tools import grouped_slice
-from ..transaction import Transaction
-from ..cache import Cache
-from ..pool import Pool
-from ..config import config
-from ..pyson import PYSONEncoder, Eval, Bool
-from ..rpc import RPC
-from ..exceptions import LoginException, RateLimitException
+from trytond.pool import Pool
+from trytond.pyson import PYSONEncoder, Eval, Bool
 from trytond.report import Report, get_email
+from trytond.rpc import RPC
 from trytond.sendmail import sendmail_transactional
+from trytond.tools import grouped_slice
+from trytond.transaction import Transaction
 from trytond.url import host, http_host
+from trytond.wizard import Wizard, StateView, Button, StateTransition
 
-__all__ = [
-    'User', 'LoginAttempt', 'UserAction', 'UserGroup', 'Warning_',
-    'UserApplication', 'EmailResetPassword',
-    'UserConfigStart', 'UserConfig',
-    ]
 logger = logging.getLogger(__name__)
 _has_password = 'password' in re.split('[,+]', config.get(
     'session', 'authentications', default='password'))
diff --git a/trytond/sendmail.py b/trytond/sendmail.py
index 3454556936..586c0417c8 100644
--- a/trytond/sendmail.py
+++ b/trytond/sendmail.py
@@ -7,8 +7,8 @@ from email.utils import formatdate
 from email.mime.text import MIMEText
 from urllib.parse import parse_qs, unquote_plus
 
-from .config import config, parse_uri
-from .transaction import Transaction
+from trytond.config import config, parse_uri
+from trytond.transaction import Transaction
 
 __all__ = ['sendmail_transactional', 'sendmail', 'SMTPDataManager']
 logger = logging.getLogger(__name__)
diff --git a/trytond/tools/misc.py b/trytond/tools/misc.py
index a5c4b00620..cb29c72984 100644
--- a/trytond/tools/misc.py
+++ b/trytond/tools/misc.py
@@ -84,7 +84,7 @@ def get_smtp_server():
     :return: A SMTP instance. The quit() method must be call when all
     the calls to sendmail() have been made.
     """
-    from ..sendmail import get_smtp_server
+    from trytond.sendmail import get_smtp_server
     warnings.warn(
         'get_smtp_server is deprecated use trytond.sendmail',
         DeprecationWarning)