想做一个自己的数字货币行情的数据库，代码有点丑，各位大哥给点意见

import pymysql from apscheduler.schedulers.background import BackgroundScheduler import requests import datetime import time logging.basicConfig(filename = 'tstw.log',format = '%(asctime)s - %(name)s - %(levelname)s - %(message)s') db = pymysql.connect(host = "localhost",user = "root",password = "root",database = "dogeusdt",charset = 'utf8' ) global cursor cursor = db.cursor() global sql global last_datetime last_datetime = None sql1 = "CREATE TABLE IF NOT EXISTS `1min` ( `datetime` date,`open` float,`high` float,`low` float,`close` float)" cursor.execute(sql1) sql = 'insert into 1min(datetime,open,high,low,close) values(%(datetime)s,%(open)s,%(high)s,%(low)s,%(close)s);' def get_kbar_and_save(): for i in range(3): try: r1 = requests.get("https://api.huobi.pro/market/history/kline?period=1min&size=1&symbol=btcusdt").json() r1_data = r1['data'][0] if (r1['status']=='ok') and (last_datetime - datetime.datetime.fromtimestamp(r1_d['id'])== datetime.timedelta(secOnds=60)): r1_data['datetime'] = datetime.datetime.fromtimestamp(r1_d['id']) try: cursor.execute(sql,r1_data ) db.commit() last_datetime = r1_data ['datetime'] return logging.info('已写入数据库') except: logging.warning('数据库写入错误') r1_data['datetime'] = datetime.datetime.now() r1_data['open'] = 0 r1_data['high'] = 0 r1_data['low'] = 0 r1_data['close'] = 0 else: time.sleep(10) except: time.sleep(10) sche_00 = BackgroundScheduler() sche_00.add_job(get_kbar_and_save, 'cron', hour='*',minute='*', secOnd='0', id='task0') sche_00.start()``` 觉得自己太菜了想放弃的时候该怎么心理建设。。。