Please who can help me to find the error in this function:

def get_inputs(self, cr, uid,ids, state,project, credit, context=None):

ret = []

obj = self.pool.get('project.service')

obj_ids = self.pool.get('project.service.line')

res = obj_ids.read(cr, uid, obj_ids, ['id', 'int_service','ext_service', 'unit_service', 'int_sevice_unit','ext_sevice_unit'], context)

for r in res :

inputs = {

'project_service_id': r['id'],

'int_services': r['int_service'],

'ext_services': r['ext_service'],

'state': states,

'project': projects,

'credit': credits,

'unit_services': r['unit_service'],

'int_sevices_unit': r['int_sevice_unit'],

'ext_sevices_unit': r['ext_sevice_unit'],

}

ret += [inputs]

return ret