Python定时从Mysql提取数据存入Redis的实现

 # -*- coding:utf-8 -*- 

import MySQLdb
import schedule
import time
import datetime
import random
import string
import redis

# get the data from mysql
class FromSql(object):
  def __init__(self, conn):
    self.conn = conn

  def acquire(self):
    cursor = self.conn.cursor()
    try:
      sql = "SELECT * FROM test WHERE TO_DAYS(NOW()) - TO_DAYS(t) <= 1"

      cursor.execute(sql)
      rs = cursor.fetchall()
      #print (rs)
      for eve in rs:

        print('%s, %s, %s, %s' % eve)
      copy_rs = rs
      cursor.close()

      return copy_rs 

    except Exception as e:
      print("The error: %s" % e)


class RedisQueue(object):

  def __init__(self, name, namespace='queue', **redis_kwargs):
    """The default connection parameters are: host='localhost', port=6379, db=0"""
    self.__db= redis.Redis(**redis_kwargs)
    self.key = '%s:%s' %(namespace, name)

  def qsize(self):
    return self.__db.llen(self.key)

  def put(self, item):
    self.__db.rpush(self.key, item)

  def get(self, block=True, timeout=None):

    if block:
      item = self.__db.blpop(self.key, timeout=timeout)
    else:
      item = self.__db.lpop(self.key)

    if item:
      item = item[1]
    return item

  def get_nowait(self):
    return self.get(False)


if __name__ == "__main__":
  # connect mysqldb
  conn_sql = MySQLdb.connect(
            host = '127.0.0.1',
            port = 3306,
            user = 'root',
            passwd = '',
            db = 'test',
            charset = 'utf8'
            )


def job_for_redis():
    get_data = FromSql(conn_sql)
    data = get_data.acquire()

    q = RedisQueue('test',host='localhost', port=6379, db=0)
    for single_data in data:
      for meta_data in single_data:
        q.put(meta_data)
        print(meta_data)
    print("All data had been inserted.") 

"""
  try:
    schedule.every().day.at("00:00").do(job_for_redis)
  except Exception as e:
    print('Error: %s'% e)
#  finally:
#    conn.close()

  while True:
    schedule.run_pending()
    time.sleep(1)
"""

import schedule
import time
 
def job():
  print("I'm working...")
 
schedule.every(10).minutes.do(job)       # 每隔10分钟执行一次任务
schedule.every().hour.do(job)          # 每隔一小时执行一次任务
schedule.every().day.at("10:30").do(job)    # 每天10：30执行一次任务
schedule.every(5).to(10).days.do(job)      # 每5-10天执行一次任务
schedule.every().monday.do(job)         # 每周一的这个时候执行一次任务
schedule.every().wednesday.at("13:15").do(job) # 每周三13:15执行一次任务
 
while True:
  schedule.run_pending()

import pymysql
import schedule
import time
import requests
import pandas
from sqlalchemy import create_engine

#获取美元的所有外汇
def job():
  content = '美元'
  url = 'http://www.boc.cn/sourcedb/whpj/index.html' #外汇数据地址
  html = requests.get(url).content.decode('utf-8')

  index = html.index('<td>' + content + '</td>')
  str = html[index:index+300]
  result = re.findall('<td>(.*"币种：" + result[0])
  print("现汇买入价：" + result[1])
  print("现钞买入价：" + result[2])
  print("现汇卖出价：" + result[3])
  print("现钞卖出价：" + result[4])
  print("中行结算价：" + result[5])
  print("发布时间：" + result[6] + ' ' + result[7])
  
 #本地地址 数据库账号 密码  数据库名
  db = pymysql.connect('localhost','root','root','pinyougoudb')
  cursor = db.cursor()
  
 #sql语句
  sql = "update tb_money set huiBuy = %s,chaoBuy = %s,huiSale = %s,chaoSale = %s,centerResult= %s,publishTime = '%s' where typeId = '%s'" % (result[1], result[2], result[3], result[4], result[5], result[6] + ' ' + result[7], result[0])

  cursor.execute(sql)
  db.commit()
  print('success')

 # 查询语句，将存入的数据查出来
  # sqlalchemy 进行数据库初始化
  engine = create_engine('mysql+pymysql://root:root@localhost:3306/pinyougoudb')
  sql = '''select * from tb_money'''

  # pandas 进行数据库读写
  df = pandas.read_sql_query(sql,engine)
  print(df)

  db.commit()


# 每隔几分中刷新一次
#schedule.every(0.1).minutes.do(job)

#每天什么时候刷新
schedule.every().day.at("09:29").do(job)
schedule.every().day.at("09:30").do(job)

#一直循环 知道满足条件执行
while True:
  schedule.run_pending()