diff --git a/easy_my_coop/models/company.py b/easy_my_coop/models/company.py
index ee27535..e9e0c8b 100644
--- a/easy_my_coop/models/company.py
+++ b/easy_my_coop/models/company.py
@@ -90,7 +90,7 @@ class ResCompany(models.Model):
     )
     financial_risk_approval_text = fields.Html(
         translate=True,
-        help="Text to display aside the checkbox to approve financial risk."
+        help="Text to display aside the checkbox to approve financial risk.",
     )
 
     @api.onchange("data_policy_approval_required")
@@ -103,7 +103,7 @@ class ResCompany(models.Model):
         if self.internal_rules_approval_required:
             self.display_internal_rules_approval = True
 
-    @api.onchange('financial_risk_approval_required')
+    @api.onchange("financial_risk_approval_required")
     def onchange_financial_risk_approval_required(self):
         if self.financial_risk_approval_required:
             self.display_financial_risk_approval = True
diff --git a/easy_my_coop/models/coop.py b/easy_my_coop/models/coop.py
index 5037490..d3fe1f2 100644
--- a/easy_my_coop/models/coop.py
+++ b/easy_my_coop/models/coop.py
@@ -44,7 +44,7 @@ class SubscriptionRequest(models.Model):
         if company.internal_rules_approval_required:
             required_fields.append("internal_rules_approved")
         if company.financial_risk_approval_required:
-            required_fields.append('financial_risk_approved')
+            required_fields.append("financial_risk_approved")
         return required_fields
 
     def get_mail_template_notif(self, is_company=False):
@@ -432,8 +432,7 @@ class SubscriptionRequest(models.Model):
         string="Approved Internal Rules", default=False
     )
     financial_risk_approved = fields.Boolean(
-        string='Financial Risk Approved',
-        default=False,
+        string="Financial Risk Approved", default=False
     )
 
     _order = "id desc"
@@ -580,7 +579,7 @@ class SubscriptionRequest(models.Model):
             "lang": self.lang,
             "data_policy_approved": self.data_policy_approved,
             "internal_rules_approved": self.internal_rules_approved,
-            'financial_risk_approved': self.financial_risk_approved
+            "financial_risk_approved": self.financial_risk_approved,
         }
         return partner_vals
 
@@ -602,7 +601,7 @@ class SubscriptionRequest(models.Model):
             "customer": self.share_product_id.customer,
             "data_policy_approved": self.data_policy_approved,
             "internal_rules_approved": self.internal_rules_approved,
-            "financial_risk_approved": self.financial_risk_approved
+            "financial_risk_approved": self.financial_risk_approved,
         }
         return partner_vals
 
diff --git a/easy_my_coop/models/operation_request.py b/easy_my_coop/models/operation_request.py
index 3b5543c..e1ba986 100644
--- a/easy_my_coop/models/operation_request.py
+++ b/easy_my_coop/models/operation_request.py
@@ -29,7 +29,7 @@ class OperationRequest(models.Model):
     request_date = fields.Date(
         string="Request date", default=lambda self: self.get_date_now()
     )
-    effective_date = fields.Date(string='Effective date')
+    effective_date = fields.Date(string="Effective date")
     partner_id = fields.Many2one(
         "res.partner",
         string="Cooperator",
diff --git a/easy_my_coop/models/partner.py b/easy_my_coop/models/partner.py
index 64e9ab7..cbae28a 100644
--- a/easy_my_coop/models/partner.py
+++ b/easy_my_coop/models/partner.py
@@ -206,12 +206,11 @@ class ResPartner(models.Model):
             member_companies = self.env["res.partner"].search(
                 [("is_company", "=", True), ("member", "=", True)]
             )
+            representatives = member_companies.mapped("child_ids").filtered(
+                "representative"
+            )
             partner.representative_of_member_company = (
-                partner in member_companies.mapped(
-                    "child_ids"
-                ).filtered(
-                    "representative"
-                )
+                partner in representatives
             )
 
     @api.multi
diff --git a/easy_my_coop/views/email_template_view.xml b/easy_my_coop/views/email_template_view.xml
index d110f67..98b87e7 100644
--- a/easy_my_coop/views/email_template_view.xml
+++ b/easy_my_coop/views/email_template_view.xml
@@ -16,9 +16,9 @@
         <field name="model">mail.template</field>
         <field name="inherit_id" ref="mail.email_template_form"/>
         <field name="arch" type="xml">
-        	<field name="mail_server_id" position="after">
-        		<field name="easy_my_coop"/>
-        	</field>
+            <field name="mail_server_id" position="after">
+                <field name="easy_my_coop"/>
+            </field>
         </field>
     </record>
 </odoo>
diff --git a/easy_my_coop/views/res_partner_view.xml b/easy_my_coop/views/res_partner_view.xml
index cc03a14..58ab6b5 100644
--- a/easy_my_coop/views/res_partner_view.xml
+++ b/easy_my_coop/views/res_partner_view.xml
@@ -54,11 +54,11 @@
                         </group>
                         <group name="approvals">
                             <field name="internal_rules_approved"
-                            	   attrs="{'invisible':[('member','=',False)]}"/>
+                                   attrs="{'invisible':[('member','=',False)]}"/>
                             <field name="data_policy_approved"
-                            	   attrs="{'invisible':[('member','=',False)]}"/>
+                                   attrs="{'invisible':[('member','=',False)]}"/>
                             <field name="financial_risk_approved"
-                            	   attrs="{'invisible':[('member','=',False)]}"/>
+                                   attrs="{'invisible':[('member','=',False)]}"/>
                         </group>
                     </group>
                 </xpath>
diff --git a/easy_my_coop_website_taxshelter/controllers/main.py b/easy_my_coop_website_taxshelter/controllers/main.py
index 7263e98..a084bb7 100644
--- a/easy_my_coop_website_taxshelter/controllers/main.py
+++ b/easy_my_coop_website_taxshelter/controllers/main.py
@@ -105,6 +105,11 @@ class PortalTaxShelter(CustomerPortal):
             "easy_my_coop_website_taxshelter.portal_my_tax_shelter", values
         )
 
+    # Black adds a trailing comma after last argument of function definition
+    #  this syntax is invalid for python < 3.6
+    # Exclude for formatting while not fixed, follow status here:
+    # https://github.com/psf/black/issues/1657
+    # fmt: off
     @http.route(
         ["/my/tax_shelter_certificates/<int:certificate_id>"],
         type="http",
@@ -120,6 +125,7 @@ class PortalTaxShelter(CustomerPortal):
         query_string=None,
         **kw
     ):
+        # fmt: on
         partner = request.env.user.partner_id
         try:
             taxshelter_certificate_sudo = self._document_check_access(