pyhton多线程例子

#!/usr/bin/python3
# -*- coding: utf-8 -*-
# --------------------------------
# Name GrapHan_pin
# Author DELL
# Date  2020/9/22
# 多线程
#多线程处理图谱数据，把图谱中所有节点都更新拼音编码属性
# -------------------------------
import pinyin
from py2neo import Graph
from threading import Thread
import time
import math
import random

class Grap_pinyin:
    def __init__(self):
        self.neo_graph = Graph(
            "http://192.168.3.150:7480",
            username="neo4j",
            password="root"
        )

def getStrAllAplha(str):
        return pinyin.get_initial(str, delimiter="").upper()

def getStrFirstAplha(str):
        str = getStrAllAplha(str)
        str = str[0:1]
        return str.upper()

def processsGrep(neo_graph,df,data):
    for jj in data:
        try:
            query = 'match(d) where d.name=%r set d.拼音编码=%r ' % (jj, getStrAllAplha(jj))
            print(df, query)
            neo_graph.run(query)
        except Exception as e:
            print(e)


def split_def():
    graph_object = Grap_pinyin()
    neo_graph = graph_object.neo_graph
    query = 'match(d) where d.拼音编码 is null return collect(distinct d.name) as data'
    data = neo_graph.run(query).data()[0]['data']
    thread_list = []
    # 每个线程处理的数据大小
    split_count = 20
    # 需要的线程个数
    times = math.ceil(len(data) / split_count)
    count = 0
    for item in range(times):
        _list = data[count:count+split_count]
        #线程相关处理
        thread = Thread(target=processsGrep,args=(neo_graph,item,_list))
        thread_list.append(thread)
        #在子线程中运行任务
        thread.start()
        count += split_count
    #线程同步，等待子线程运行结束，主线程再结束
    for _item in thread_list:
        _item.join()


if __name__ == '__main__':
  
    split_def()