Pyflakes fixes.

__init__.py

@@ -1,9 +1,9 @@
 #The COPYRIGHT file at the top level of this repository contains the full
 #copyright notices and license terms.
-
 from trytond.pool import Pool
-from .work import *
+from . import work
+
 def register():
     Pool.register(
-        Work,
+        work.Work,
         module='project_task_invoice', type_='model')

tests/__init__.py

@@ -1,4 +1,5 @@
 # The COPYRIGHT file at the top level of this repository contains the full
 # copyright notices and license terms.
-
 from .test import suite
+
+__all__ = ['suite']

work.py

@@ -5,8 +5,6 @@ from trytond.model import fields
 from trytond.pool import PoolMeta
 from trytond.pyson import Eval
 
-__all__ = ['Work']
-
 
 class Work(metaclass=PoolMeta):
     __name__ = 'project.work'