python 多线程和多进程

import os
import cv2
import requests
import json
import base64
import numpy as np
from collections import OrderedDict
from concurrent.futures import ThreadPoolExecutor  # 进程池模块
import time

def getByte(path):
    with open(path, 'rb') as f:
        img_byte = base64.b64encode(f.read())
    img_str = img_byte.decode('ascii')
    return img_str

def GetOcr(image):
    url="http://192.168.62.33:8090/api/tr-run/"
    data = {"img":str(image)}
    res = requests.post(url=url,data=data,timeout=100)
    res.encoding = res.apparent_encoding
    json_str = json.loads(res.content,object_pairs_hook=OrderedDict)
    raw= json_str["data"]["raw_out"]
    value=""
    for item in raw:
        value+=item[1]
    return value

def CutImage(path,savepath,key):
    #a= getByte(path)
    image = cv2.imread(path)
    cropImg = image[440:565,415:1400]
    cv2.imencode('.jpg', cropImg)[1].tofile(savepath)
    name= GetOcr(getByte(savepath))
    try:
        cv2.imencode('.jpg', image)[1].tofile("newimages\\"+str(name)+".jpg")
    except Exception as e:
        print('出现异常:', e)
    print(str(key))


def	main():
    pool = ThreadPoolExecutor(5)
    path = "images\\"
    fileList = os.listdir(path)
    if len(fileList)<=0:
        return

    t0 = time.time()
    for item in fileList:
        pool.submit(CutImage, path+item, "cutimages\\"+str(item),fileList.index(item))
    pool.shutdown(wait=True)
    print("完成裁剪,耗时：")
    print (time.time() - t0)

if __name__ == "__main__":
    main()