I am fetching the variable from url when I print them it shows excellent output in console

mgr = request.args.get('mgr')  # Getting the value of 'mgr' parameter from the query string
dept = request.args.get('dept')  # Getting the value of 'dept' parameter from the query string
    
print("Manager",mgr)
print("Department:", dept)

but when I fire these variables in query it shows following output

employee_data = EmployeeBio.query.filter(EmployeeBio.department == dept, func.lower(EmployeeBio.line_manager).ilike(f'%{mgr.lower()}%')).all()

output query

SELECT employee_bio.employee_id AS employee_bio_employee_id, employee_bio.name AS employee_bio_name, employee_bio.designation AS employee_bio_designation, employee_bio.department AS employee_bio_department, employee_bio.years_in_usf AS employee_bio_years_in_usf, employee_bio.is_manager AS employee_bio_is_manager, employee_bio.line_manager AS employee_bio_line_manager, employee_bio.is_cxo AS employee_bio_is_cxo, employee_bio.cxo AS employee_bio_cxo
FROM employee_bio
WHERE employee_bio.department = %(department_1)s AND lower(employee_bio.line_manager) ILIKE %(lower_1)s

why this %(department_1)s instead of value in dept variable?