Minor fixes

.gitignore

@@ -0,0 +1,29 @@
+# See https://help.github.com/ignore-files/ for more about ignoring files.
+
+# dependencies
+/build
+/dist
+*egg-info
+
+
+/node_modules
+
+# testing
+/coverage
+
+# production
+/build
+
+# misc
+
+.DS_Store
+
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+package-lock*
+
+/__pycache__
+/app/__pycache__
+/app/commons/__pycache__

purchase.py

@@ -1,5 +1,5 @@
-#This file is part of Tryton.  The COPYRIGHT file at the top level
-#of this repository contains the full copyright notices and license terms.
+# 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 __future__ import with_statement
 from datetime import date
 from decimal import Decimal
@@ -10,15 +10,17 @@ from trytond.transaction import Transaction
 from trytond.wizard import Wizard, StateView, Button, StateTransition, StateReport
 from trytond.pyson import Eval
 
-__all__ = ['Purchase', 'PurchaseLine', 'PurchaseDetailedReport',
-        'PurchaseAnalyticStart', 'PurchaseAnalytic',
-        'PurchaseAnalyticReport', 'PurchaseForceCancel',
-        'Purchase']
+__all__ = [
+    'Purchase', 'PurchaseLine', 'PurchaseDetailedReport', 'Purchase',
+    'PurchaseAnalyticStart', 'PurchaseAnalytic', 'PurchaseAnalyticReport',
+    'PurchaseForceCancel',
+]
 
 _STATES = {
     'readonly': Eval('state') != 'draft',
 }
 
+
 class Purchase(metaclass=PoolMeta):
     __name__ = 'purchase.purchase'
 
@@ -26,8 +28,8 @@ class Purchase(metaclass=PoolMeta):
     def __setup__(cls):
         super(Purchase, cls).__setup__()
         cls._error_messages.update({
-                'duplicate_purchase': ('Purchase Duplicate! already exists other purchase with reference"%s".'),
-            })
+            'duplicate_purchase': ('Purchase Duplicate! already exists other purchase with reference"%s".'),
+        })
 
     @classmethod
     def confirm(cls, purchases):
@@ -96,8 +98,8 @@ class Purchase(metaclass=PoolMeta):
         PurchaseLine.create(create_lines)
         return count
 
-class PurchaseLine:
-    __metaclass__ = PoolMeta
+
+class PurchaseLine(metaclass=PoolMeta):
     __name__ = 'purchase.line'
     date_start = fields.Date('Date Start')
     date_end = fields.Date('Date End')
@@ -120,7 +122,8 @@ class PurchaseDetailedReport(Report):
 
     @classmethod
     def get_context(cls, records, data):
-        report_context = super(PurchaseDetailedReport, cls).get_context(records, data)
+        report_context = super(PurchaseDetailedReport, cls).get_context(
+            records, data)
         user = Pool().get('res.user')(Transaction().user)
         report_context['company'] = user.company
 
@@ -151,7 +154,7 @@ class PurchaseAnalytic(Wizard):
         'purchase_report.purchase_analytic_start_view_form', [
             Button('Cancel', 'end', 'tryton-cancel'),
             Button('Print', 'print_', 'tryton-ok', default=True),
-            ])
+        ])
     print_ = StateReport('purchase_report.analytic.report')
 
     def do_print_(self, action):