diff --git a/contract_payment_mode/__manifest__.py b/contract_payment_mode/__manifest__.py
index 5136d4725..a235ad1c4 100644
--- a/contract_payment_mode/__manifest__.py
+++ b/contract_payment_mode/__manifest__.py
@@ -6,23 +6,16 @@
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 
 {
-    'name': 'Contract Payment Mode',
-    'summary': 'Payment mode in contracts and their invoices',
-    'version': '12.0.1.1.0',
-    'author': 'Domatix, '
-              'Tecnativa, '
-              'Odoo Community Association (OCA)',
-    'website': 'https://github.com/OCA/contract',
-    'depends': [
-        'contract',
-        'account_payment_partner'
-    ],
-    'category': 'Sales Management',
-    'license': 'AGPL-3',
-    'data': [
-        'views/contract_view.xml',
-    ],
-    'post_init_hook': 'post_init_hook',
-    'installable': True,
-    'auto_install': True,
+    "name": "Contract Payment Mode",
+    "summary": "Payment mode in contracts and their invoices",
+    "version": "12.0.1.1.0",
+    "author": "Domatix, " "Tecnativa, " "Odoo Community Association (OCA)",
+    "website": "https://github.com/OCA/contract",
+    "depends": ["contract", "account_payment_partner"],
+    "category": "Sales Management",
+    "license": "AGPL-3",
+    "data": ["views/contract_view.xml",],
+    "post_init_hook": "post_init_hook",
+    "installable": True,
+    "auto_install": True,
 }
diff --git a/contract_payment_mode/hooks.py b/contract_payment_mode/hooks.py
index 230a23852..7ba0b9e65 100644
--- a/contract_payment_mode/hooks.py
+++ b/contract_payment_mode/hooks.py
@@ -1,9 +1,10 @@
 # Copyright 2016 Antiun Ingenieria S.L. - Antonio Espinosa
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 
-from odoo import api, SUPERUSER_ID
 import logging
 
+from odoo import SUPERUSER_ID, api
+
 _logger = logging.getLogger(__name__)
 
 
@@ -11,15 +12,12 @@ def post_init_hook(cr, registry):
     """Copy payment mode from partner to the new field at contract."""
     with api.Environment.manage():
         env = api.Environment(cr, SUPERUSER_ID, {})
-        m_contract = env['contract.contract']
-        contracts = m_contract.search([
-            ('payment_mode_id', '=', False),
-        ])
+        m_contract = env["contract.contract"]
+        contracts = m_contract.search([("payment_mode_id", "=", False),])
         if contracts:
-            _logger.info('Setting payment mode: %d contracts' %
-                         len(contracts))
+            _logger.info("Setting payment mode: %d contracts" % len(contracts))
         for contract in contracts:
             payment_mode = contract.partner_id.customer_payment_mode_id
             if payment_mode:
                 contract.payment_mode_id = payment_mode.id
-        _logger.info('Setting payment mode: Done')
+        _logger.info("Setting payment mode: Done")
diff --git a/contract_payment_mode/models/contract.py b/contract_payment_mode/models/contract.py
index d575aacb7..edba78254 100644
--- a/contract_payment_mode/models/contract.py
+++ b/contract_payment_mode/models/contract.py
@@ -2,26 +2,27 @@ from odoo import api, fields, models
 
 
 class ContractContract(models.Model):
-    _inherit = 'contract.contract'
+    _inherit = "contract.contract"
 
     payment_mode_id = fields.Many2one(
-        comodel_name='account.payment.mode',
-        string='Payment Mode',
-        domain=[('payment_type', '=', 'inbound')],
+        comodel_name="account.payment.mode",
+        string="Payment Mode",
+        domain=[("payment_type", "=", "inbound")],
         index=True,
     )
 
-    @api.onchange('partner_id')
+    @api.onchange("partner_id")
     def on_change_partner_id(self):
         self.payment_mode_id = self.partner_id.customer_payment_mode_id.id
 
     @api.multi
     def _prepare_invoice(self, date_invoice, journal=None):
         invoice_vals = super(ContractContract, self)._prepare_invoice(
-            date_invoice=date_invoice, journal=journal)
+            date_invoice=date_invoice, journal=journal
+        )
         if self.payment_mode_id:
-            invoice_vals['payment_mode_id'] = self.payment_mode_id.id
-            invoice = self.env['account.invoice'].new(invoice_vals)
+            invoice_vals["payment_mode_id"] = self.payment_mode_id.id
+            invoice = self.env["account.invoice"].new(invoice_vals)
             invoice._onchange_payment_mode_id()
             invoice_vals = invoice._convert_to_write(invoice._cache)
         return invoice_vals
@@ -35,8 +36,7 @@ class ContractContract(models.Model):
         payment_modes_by_invoice = {}
         for invoice in invoices:
             payment_modes_by_invoice[invoice] = invoice.payment_mode_id
-        res = super(ContractContract, self)._finalize_invoice_creation(
-            invoices)
+        res = super(ContractContract, self)._finalize_invoice_creation(invoices)
         for invoice in invoices:
             invoice.payment_mode_id = payment_modes_by_invoice.get(invoice)
         return res
diff --git a/contract_payment_mode/tests/test_contract_payment.py b/contract_payment_mode/tests/test_contract_payment.py
index 708045454..cee797167 100644
--- a/contract_payment_mode/tests/test_contract_payment.py
+++ b/contract_payment_mode/tests/test_contract_payment.py
@@ -4,91 +4,105 @@
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 
 import odoo.tests
+
 from ..hooks import post_init_hook
 
 
 @odoo.tests.post_install(True)
 @odoo.tests.at_install(False)
 class TestContractPaymentInit(odoo.tests.HttpCase):
-
     def setUp(self):
         super(TestContractPaymentInit, self).setUp()
 
-        self.payment_method = self.env['account.payment.method'].create({
-            'name': 'Test Payment Method',
-            'code': 'Test',
-            'payment_type': 'inbound',
-        })
-        self.payment_mode = self.env['account.payment.mode'].create({
-            'name': 'Test payment mode',
-            'active': True,
-            'payment_method_id': self.payment_method.id,
-            'bank_account_link': 'variable',
-        })
-        self.partner = self.env['res.partner'].create({
-            'name': 'Test contract partner',
-            'customer_payment_mode_id': self.payment_mode,
-        })
-        self.product = self.env['product.product'].create({
-            'name': 'Custom Service',
-            'type': 'service',
-            'uom_id': self.env.ref('uom.product_uom_hour').id,
-            'uom_po_id': self.env.ref('uom.product_uom_hour').id,
-            'sale_ok': True,
-        })
-        self.contract = self.env['contract.contract'].create({
-            'name': 'Maintenance of Servers',
-            'partner_id': self.partner.id,
-        })
-        company = self.env.ref('base.main_company')
-        self.journal = self.env['account.journal'].create({
-            'name': 'Sale Journal - Test',
-            'code': 'HRTSJ',
-            'type': 'sale',
-            'company_id': company.id})
+        self.payment_method = self.env["account.payment.method"].create(
+            {"name": "Test Payment Method", "code": "Test", "payment_type": "inbound",}
+        )
+        self.payment_mode = self.env["account.payment.mode"].create(
+            {
+                "name": "Test payment mode",
+                "active": True,
+                "payment_method_id": self.payment_method.id,
+                "bank_account_link": "variable",
+            }
+        )
+        self.partner = self.env["res.partner"].create(
+            {
+                "name": "Test contract partner",
+                "customer_payment_mode_id": self.payment_mode,
+            }
+        )
+        self.product = self.env["product.product"].create(
+            {
+                "name": "Custom Service",
+                "type": "service",
+                "uom_id": self.env.ref("uom.product_uom_hour").id,
+                "uom_po_id": self.env.ref("uom.product_uom_hour").id,
+                "sale_ok": True,
+            }
+        )
+        self.contract = self.env["contract.contract"].create(
+            {"name": "Maintenance of Servers", "partner_id": self.partner.id,}
+        )
+        company = self.env.ref("base.main_company")
+        self.journal = self.env["account.journal"].create(
+            {
+                "name": "Sale Journal - Test",
+                "code": "HRTSJ",
+                "type": "sale",
+                "company_id": company.id,
+            }
+        )
 
     def test_post_init_hook(self):
-        contract = self.env['contract.contract'].create({
-            'name': 'Test contract',
-            'partner_id': self.partner.id,
-            'payment_mode_id': self.payment_mode.id,
-        })
-        self.assertEqual(contract.payment_mode_id,
-                         self.payment_mode)
+        contract = self.env["contract.contract"].create(
+            {
+                "name": "Test contract",
+                "partner_id": self.partner.id,
+                "payment_mode_id": self.payment_mode.id,
+            }
+        )
+        self.assertEqual(contract.payment_mode_id, self.payment_mode)
 
         contract.payment_mode_id = False
         self.assertEqual(contract.payment_mode_id.id, False)
 
         post_init_hook(self.cr, self.env)
-        self.assertEqual(contract.payment_mode_id,
-                         self.payment_mode)
+        self.assertEqual(contract.payment_mode_id, self.payment_mode)
 
     def test_contract_and_invoices(self):
-        self.contract.write({'partner_id': self.partner.id})
+        self.contract.write({"partner_id": self.partner.id})
         self.contract.on_change_partner_id()
-        self.assertEqual(self.contract.payment_mode_id,
-                         self.contract.partner_id.customer_payment_mode_id)
-        self.contract.write({
-            'contract_line_ids': [(0, 0, {
-                'product_id': self.product.id,
-                'name': 'Database Administration 25',
-                'quantity': 2.0,
-                'uom_id': self.product.uom_id.id,
-                'price_unit': 200.0,
-                'recurring_rule_type': 'monthly',
-                'recurring_interval': 1,
-                'date_start': '2018-01-01',
-                'recurring_next_date': '2018-01-15',
-                'is_auto_renew': False,
-            })]
-        })
+        self.assertEqual(
+            self.contract.payment_mode_id,
+            self.contract.partner_id.customer_payment_mode_id,
+        )
+        self.contract.write(
+            {
+                "contract_line_ids": [
+                    (
+                        0,
+                        0,
+                        {
+                            "product_id": self.product.id,
+                            "name": "Database Administration 25",
+                            "quantity": 2.0,
+                            "uom_id": self.product.uom_id.id,
+                            "price_unit": 200.0,
+                            "recurring_rule_type": "monthly",
+                            "recurring_interval": 1,
+                            "date_start": "2018-01-01",
+                            "recurring_next_date": "2018-01-15",
+                            "is_auto_renew": False,
+                        },
+                    )
+                ]
+            }
+        )
         self.contract.recurring_create_invoice()
         new_invoice = self.contract._get_related_invoices()
         self.assertTrue(new_invoice)
         self.assertEqual(new_invoice.partner_id, self.contract.partner_id)
-        self.assertEqual(new_invoice.payment_mode_id,
-                         self.contract.payment_mode_id)
+        self.assertEqual(new_invoice.payment_mode_id, self.contract.payment_mode_id)
         self.assertEqual(len(new_invoice.ids), 1)
         self.contract.recurring_create_invoice()
-        self.assertEqual(self.contract.payment_mode_id,
-                         new_invoice.payment_mode_id)
+        self.assertEqual(self.contract.payment_mode_id, new_invoice.payment_mode_id)
diff --git a/contract_payment_mode/views/contract_view.xml b/contract_payment_mode/views/contract_view.xml
index 9c9704c71..028fb4b1b 100644
--- a/contract_payment_mode/views/contract_view.xml
+++ b/contract_payment_mode/views/contract_view.xml
@@ -1,9 +1,10 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8" ?>
 <odoo>
-
     <!--FORM view-->
     <record id="contract_contract_form_view" model="ir.ui.view">
-        <field name="name">contract.contract form view (in contract_payment_mode)</field>
+        <field
+            name="name"
+        >contract.contract form view (in contract_payment_mode)</field>
         <field name="model">contract.contract</field>
         <field name="inherit_id" ref="contract.contract_contract_form_view" />
         <field name="arch" type="xml">
@@ -12,10 +13,11 @@
             </field>
         </field>
     </record>
-
     <!--TREE view-->
     <record id="contract_contract_tree_view" model="ir.ui.view">
-        <field name="name">contract.contract tree view (in contract_payment_mode)</field>
+        <field
+            name="name"
+        >contract.contract tree view (in contract_payment_mode)</field>
         <field name="model">contract.contract</field>
         <field name="inherit_id" ref="contract.contract_contract_tree_view" />
         <field name="arch" type="xml">
@@ -24,10 +26,11 @@
             </field>
         </field>
     </record>
-
     <!--FORM view-->
     <record id="contract_contract_search_view" model="ir.ui.view">
-        <field name="name">contract.contract search view (in contract_payment_mode)</field>
+        <field
+            name="name"
+        >contract.contract search view (in contract_payment_mode)</field>
         <field name="model">contract.contract</field>
         <field name="inherit_id" ref="contract.contract_contract_search_view" />
         <field name="arch" type="xml">
@@ -36,19 +39,21 @@
             </field>
         </field>
     </record>
-    
-    
-        <!--Supplier FORM view-->
+    <!--Supplier FORM view-->
     <record id="contract_contract_supplier_form_view" model="ir.ui.view">
-        <field name="name">contract.contract supplier form view (in contract_payment_mode)</field>
+        <field
+            name="name"
+        >contract.contract supplier form view (in contract_payment_mode)</field>
         <field name="model">contract.contract</field>
-		<field name="priority">18</field>
-        <field name="inherit_id" ref="contract.contract_contract_supplier_form_view"/>
+        <field name="priority">18</field>
+        <field name="inherit_id" ref="contract.contract_contract_supplier_form_view" />
         <field name="arch" type="xml">
             <field name="partner_id" position="after">
-               <field name="payment_mode_id" domain="[('payment_type', '=', 'outbound')]"/>
+                <field
+                    name="payment_mode_id"
+                    domain="[('payment_type', '=', 'outbound')]"
+                />
             </field>
         </field>
     </record>
-
 </odoo>