diff --git a/easy_my_coop_fr/models/coop.py b/easy_my_coop_fr/models/coop.py
index f1952c1..96d44af 100644
--- a/easy_my_coop_fr/models/coop.py
+++ b/easy_my_coop_fr/models/coop.py
@@ -1,9 +1,8 @@
 # -*- coding: utf-8 -*-
-
 from openerp import fields, models
 
 
-class subscription_request(models.Model):
+class SubscriptionRequest(models.Model):
     _inherit = 'subscription.request'
 
     company_type = fields.Selection([
@@ -13,11 +12,11 @@ class subscription_request(models.Model):
                             ('sa', 'SA / SAS')])
 
     def get_required_field(self):
-        required_fields = super(subscription_request, self).get_required_field()
-        if 'iban' in required_fields:
-            required_fields.remove('iban')
+        req_fields = super(SubscriptionRequest, self).get_required_field()
+        if 'iban' in req_fields:
+            req_fields.remove('iban')
 
-        return required_fields
+        return req_fields
 
     # override function to disable the check
     def check_belgian_identification_id(self, nat_register_num):
diff --git a/easy_my_coop_online_payment/models/coop.py b/easy_my_coop_online_payment/models/coop.py
index 52c9e62..3bf7aa8 100644
--- a/easy_my_coop_online_payment/models/coop.py
+++ b/easy_my_coop_online_payment/models/coop.py
@@ -1,22 +1,26 @@
 # -*- coding: utf-8 -*-
-from openerp import api, fields, models, _
+from openerp import fields, models
+
 
 class SubscriptionRequest(models.Model):
     _inherit = 'subscription.request'
 
     payment_type = fields.Selection([('online', 'Online'),
-                                     ('deferred', 'Deferred')], string='Payment Type', default="deferred")
-    
-    def send_capital_release_request(self, invoice):
+                                     ('deferred', 'Deferred')],
+                                    string='Payment Type',
+                                    default="deferred")
+
+    def send_capital_release_request(self, inv):
         if self.payment_type == 'deferred':
-            super(SubscriptionRequest, self).send_capital_release_request(invoice)
+            super(SubscriptionRequest, self).send_capital_release_request(inv)
         return True
-    
+
+
 class AccountInvoice(models.Model):
     _inherit = 'account.invoice'
-        
+
     def post_process_confirm_paid(self, effective_date):
         if self.subscription_request.payment_type == 'deferred':
-            self.set_cooperator_effective(effective_date) 
-               
-        return True
\ No newline at end of file
+            self.set_cooperator_effective(effective_date)
+
+        return True
diff --git a/easy_my_coop_online_payment/models/payment_transaction.py b/easy_my_coop_online_payment/models/payment_transaction.py
index 052fb10..312177e 100644
--- a/easy_my_coop_online_payment/models/payment_transaction.py
+++ b/easy_my_coop_online_payment/models/payment_transaction.py
@@ -2,25 +2,27 @@
 from datetime import datetime
 import logging
 
-from openerp import api, fields, models, _
+from openerp import api, fields, models
 
 _logger = logging.getLogger(__name__)
 
+
 class PaymentTransaction(models.Model):
-    
+
     _inherit = 'payment.transaction'
-    
-    release_capital_request = fields.Many2one('account.invoice', string="Release Capital request")
-    
+
+    release_capital_request = fields.Many2one('account.invoice',
+                                              string="Release Capital request")
+
     @api.model
-    def process_online_payment_reception(self,tx):
+    def process_online_payment_reception(self, tx):
         release_capital_request = tx.release_capital_request
         release_capital_request.subscription_request[0].state = 'paid'
         effective_date = datetime.now().strftime("%d/%m/%Y")
         release_capital_request.sudo().set_cooperator_effective(effective_date)
-        
+
         return True
-    
+
     @api.v7
     def _paypal_form_validate(self, cr, uid, tx, data, context=None):
         status = data.get('payment_status')
@@ -42,4 +44,4 @@ class PaymentTransaction(models.Model):
             error = 'Received unrecognized status for Paypal payment %s: %s, set as error' % (tx.reference, status)
             _logger.info(error)
             res.update(state='error', state_message=error)
-            return tx.write(res)
\ No newline at end of file
+            return tx.write(res)
diff --git a/easy_my_coop_recompute_coop_number/wizard/cooperator_number_wizard.py b/easy_my_coop_recompute_coop_number/wizard/cooperator_number_wizard.py
index dbb2ecb..f673614 100644
--- a/easy_my_coop_recompute_coop_number/wizard/cooperator_number_wizard.py
+++ b/easy_my_coop_recompute_coop_number/wizard/cooperator_number_wizard.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 from openerp import models, fields, api
 
+
 class RecomputeWizard(models.TransientModel):
     _name = 'register.number.wizard'
 
@@ -10,10 +11,12 @@ class RecomputeWizard(models.TransientModel):
     @api.one
     def compute_register_number(self):
         obj_sequence = self.env['ir.sequence']
+        sub_reg_obj = self.env['subscription.register']
 
-        sequence_operation = obj_sequence.search([('name','=','Register Operation')])[0]
-        subscription_registers = self.env['subscription.register'].search([('register_number_operation', '>=', self.from_number)])
+        sequence_operation = obj_sequence.search([('name', '=', 'Register Operation')])[0]
+        subscription_registers = sub_reg_obj.search([('register_number_operation', '>=', self.from_number)])
         for subscription_register in subscription_registers:
             sub_reg_operation = sequence_operation.next_by_id()
 
-            subscription_register.write({'name':sub_reg_operation, 'register_number_operation': int(sub_reg_operation)})
+            subscription_register.write({'name': sub_reg_operation,
+                                         'register_number_operation': int(sub_reg_operation)})