Fix flake8 errors and warnings

We add the flake8 configuration used so we ensure everyone uses the same.
We remove the usage of __all__ for non public API.
When possible, we rationalize the class name according to its __name__ and module.

issue9082
review297061002

.flake8

@@ -0,0 +1,2 @@
+[flake8]
+ignore=E123,E124,E126,E128,W503

__init__.py

@@ -2,18 +2,18 @@
 # this repository contains the full copyright notices and license terms.
 
 from trytond.pool import Pool
-from .work import *
-from .routing import *
-from .production import *
+from . import work
+from . import routing
+from . import production
 
 
 def register():
     Pool.register(
-        WorkCenterCategory,
-        WorkCenter,
-        Work,
-        WorkCycle,
-        Operation,
-        RoutingStep,
-        Production,
+        work.WorkCenterCategory,
+        work.WorkCenter,
+        work.Work,
+        work.WorkCycle,
+        routing.Operation,
+        routing.RoutingStep,
+        production.Production,
         module='production_work', type_='model')

production.py

@@ -11,8 +11,6 @@ from trytond.model.exceptions import AccessError
 from trytond.pyson import Eval, Bool
 from trytond.transaction import Transaction
 
-__all__ = ['Production']
-
 
 class Production(metaclass=PoolMeta):
     __name__ = 'production'

routing.py

@@ -3,8 +3,6 @@
 from trytond.pool import PoolMeta, Pool
 from trytond.model import fields
 
-__all__ = ['Operation', 'RoutingStep']
-
 
 class Operation(metaclass=PoolMeta):
     __name__ = 'production.routing.operation'

setup.py

@@ -79,8 +79,8 @@ setup(name=name,
     keywords='tryton production work',
     package_dir={'trytond.modules.production_work': '.'},
     packages=(
-        ['trytond.modules.production_work'] +
-        ['trytond.modules.production_work.%s' % p for p in find_packages()]
+        ['trytond.modules.production_work']
+        + ['trytond.modules.production_work.%s' % p for p in find_packages()]
         ),
     package_data={
         'trytond.modules.production_work': (info.get('xml', [])
@@ -94,7 +94,8 @@ setup(name=name,
         'Intended Audience :: Financial and Insurance Industry',
         'Intended Audience :: Legal Industry',
         'Intended Audience :: Manufacturing',
-        'License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)',
+        'License :: OSI Approved :: '
+        'GNU General Public License v3 or later (GPLv3+)',
         'Natural Language :: Bulgarian',
         'Natural Language :: Catalan',
         'Natural Language :: Chinese (Simplified)',

tests/__init__.py

@@ -2,7 +2,7 @@
 # this repository contains the full copyright notices and license terms.
 
 try:
-    from trytond.modules.production_work.tests.test_production_work import suite
+    from trytond.modules.production_work.tests.test_production_work import suite  # noqa: E501
 except ImportError:
     from .test_production_work import suite
 

work.py

@@ -17,8 +17,6 @@ from trytond.transaction import Transaction
 from trytond.modules.product import price_digits
 from .exceptions import PickerError
 
-__all__ = ['WorkCenterCategory', 'WorkCenter', 'Work', 'WorkCycle']
-
 
 class WorkCenterCategory(ModelSQL, ModelView):
     'Work Center Category'