formatting

__init__.py

@@ -7,6 +7,7 @@ from trytond.pool import Pool
 from .category import Category
 from .book import CategoryCashbookRel, Cashbook
 
+
 def register():
     Pool.register(
         Category,

book.py

@@ -9,7 +9,8 @@ from trytond.pool import PoolMeta
 class Cashbook(metaclass=PoolMeta):
     __name__ = 'cashbook.book'
 
-    categories = fields.Many2Many(string='Categories',
+    categories = fields.Many2Many(
+        string='Categories',
         relation_name='cashbook.bookcategory-rel',
         origin='cashbook', target='category')
 
@@ -20,9 +21,11 @@ class CategoryCashbookRel(ModelSQL):
     'Category Cashbook Relation'
     __name__ = 'cashbook.bookcategory-rel'
 
-    category = fields.Many2One(string='Category', required=True, select=True,
+    category = fields.Many2One(
+        string='Category', required=True, select=True,
         model_name='cashbook.bookcategory', ondelete='CASCADE')
-    cashbook = fields.Many2One(string='Cashbook', required=True, select=True,
+    cashbook = fields.Many2One(
+        string='Cashbook', required=True, select=True,
         model_name='cashbook.book', ondelete='CASCADE')
 
 # end CategoryCashbookRel

category.py

@@ -11,16 +11,20 @@ class Category(tree(separator=' / '), ModelSQL, ModelView):
     "Cashbook Category"
     __name__ = "cashbook.bookcategory"
 
-    company = fields.Many2One(string='Company', model_name='company.company',
+    company = fields.Many2One(
+        string='Company', model_name='company.company',
         required=True, ondelete="RESTRICT")
     name = fields.Char(string='Name', required=True, translate=True)
 
-    parent = fields.Many2One(string='Parent', select=True,
+    parent = fields.Many2One(
+        string='Parent', select=True,
         model_name='cashbook.bookcategory', ondelete='CASCADE')
-    childs = fields.One2Many(string='Children', field='parent',
+    childs = fields.One2Many(
+        string='Children', field='parent',
         model_name='cashbook.bookcategory')
 
-    cashbooks = fields.Many2Many(string='Cashbooks',
+    cashbooks = fields.Many2Many(
+        string='Cashbooks',
         relation_name='cashbook.bookcategory-rel',
         origin='category', target='cashbook')
 

tests/__init__.py

@@ -1,24 +1,26 @@
-# This file is part of Tryton.  The COPYRIGHT file at the top level of
-# this repository contains the full copyright notices and license terms.
+# -*- coding: utf-8 -*-
+# This file is part of the cashbook-module from m-ds for Tryton.
+# The COPYRIGHT file at the top level of this repository contains the
+# full copyright notices and license terms.
 
 import trytond.tests.test_tryton
 import unittest
 
-from trytond.modules.cashbook_bookcategory.tests.test_category import CategoryTestCase
+from .test_category import CategoryTestCase
 
 
 __all__ = ['suite']
 
 
-class CashbookCategoryTestCase(\
-    CategoryTestCase,\
-    ):
+class CashbookCategoryTestCase(CategoryTestCase):
     'Test cashbook module'
     module = 'cashbook_bookcategory'
 
 # end CashbookCategoryTestCase
 
+
 def suite():
     suite = trytond.tests.test_tryton.suite()
-    suite.addTests(unittest.TestLoader().loadTestsFromTestCase(CashbookCategoryTestCase))
+    suite.addTests(unittest.TestLoader().loadTestsFromTestCase(
+        CashbookCategoryTestCase))
     return suite

tests/test_category.py

@@ -3,10 +3,9 @@
 # The COPYRIGHT file at the top level of this repository contains the
 # full copyright notices and license terms.
 
-from trytond.tests.test_tryton import ModuleTestCase, with_transaction
+from trytond.tests.test_tryton import with_transaction
 from trytond.pool import Pool
 from trytond.transaction import Transaction
-from trytond.exceptions import UserError
 from trytond.modules.cashbook.tests import CashbookTestCase
 
 
@@ -22,8 +21,7 @@ class CategoryTestCase(CashbookTestCase):
 
         company = self.prep_company()
         with Transaction().set_context({
-            'company': company.id,
-            }):
+                'company': company.id}):
             categories, = BookCategory.create([{
                 'name': 'Cat 0',
                 'childs': [('create', [{
@@ -56,8 +54,7 @@ class CategoryTestCase(CashbookTestCase):
         types = self.prep_type()
         company = self.prep_company()
         with Transaction().set_context({
-            'company': company.id,
-            }):
+                'company': company.id}):
             category, = BookCategory.create([{
                 'name': 'Cat 0',
                 'childs': [('create', [{
@@ -79,7 +76,9 @@ class CategoryTestCase(CashbookTestCase):
             self.assertEqual(book.categories[0].rec_name, 'Cat 0')
 
             self.assertEqual(len(category.cashbooks), 1)
-            self.assertEqual(category.cashbooks[0].rec_name, 'Book 1 | 0.00 usd | Open')
+            self.assertEqual(
+                category.cashbooks[0].rec_name,
+                'Book 1 | 0.00 usd | Open')
 
             # replace category
             Book.write(*[