fix: linter issues

erpnext/patches/v14_0/set_payroll_cost_centers.py

@@ -1,5 +1,6 @@
 import frappe
 
+
 def execute():
 	frappe.reload_doc('payroll', 'doctype', 'employee_cost_center')
 	frappe.reload_doc('payroll', 'doctype', 'salary_structure_assignment')

erpnext/payroll/doctype/employee_cost_center/employee_cost_center.py

@@ -4,5 +4,6 @@
 # import frappe
 from frappe.model.document import Document
 
+
 class EmployeeCostCenter(Document):
 	pass

erpnext/payroll/doctype/salary_structure_assignment/salary_structure_assignment.py

@@ -5,7 +5,7 @@
 import frappe
 from frappe import _
 from frappe.model.document import Document
-from frappe.utils import getdate, flt
+from frappe.utils import flt, getdate
 
 
 class DuplicateAssignment(frappe.ValidationError): pass
@@ -79,7 +79,6 @@ class SalaryStructureAssignment(Document):
 				frappe.throw(_("Total percentage against cost centers should be 100"))
 
 
-
 def get_assigned_salary_structure(employee, on_date):
 	if not employee or not on_date:
 		return None
@@ -93,6 +92,7 @@ def get_assigned_salary_structure(employee, on_date):
 		})
 	return salary_structure[0][0] if salary_structure else None
 
+
 @frappe.whitelist()
 def get_employee_currency(employee):
 	employee_currency = frappe.db.get_value('Salary Structure Assignment', {'employee': employee}, 'currency')