Step-1 Install the warehouse module.
Step-2 After that custmozie .py(Python file) file:
In below example, I have custmozied .py file. You can directly copy the below python code in your .py file -

class stock_warehouse(osv.osv):
    _name = "stock.warehouse"
    _description = "Warehouse"
    _columns = {
        'name': fields.char('Name', size=128, required=True, select=True),
        'company_id': fields.many2one('res.company', 'Company', required=True, select=True),
        'partner_id': fields.many2one('res.partner', 'Owner Address'),
        'lot_input_id': fields.many2one('stock.location', 'Location Input', required=True, domain=[('usage','<>','view')]),
        'lot_stock_id': fields.many2one('stock.location', 'Location Stock', required=True, domain=[('usage','=','internal')]),
        'lot_output_id': fields.many2one('stock.location', 'Location Output', required=True, domain=[('usage','<>','view')]),
    }