参考：http://stackoverflow.com/questions/31694616/how-to-get-peewee-result-length
result = Job.select().where(Job.position_name == ‘python’)
result_num = result.count() vs result_num = len(list(result)) ?
参考：http://stackoverflow.com/questions/31694616/how-to-get-peewee-result-length
result = Job.select().where(Job.position_name == ‘python’)
result_num = result.count() vs result_num = len(list(result)) ?
