from datetime import datetime,date,timedelta

from contextlib import closing

import urllib,urllib3

import os

import requests

def downLoad(fileUrl,filePath):

    headers = {"User-Agent":"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36"}

    with closing(requests.get(fileUrl,headers=headers,stream=True)) as response:

        chunkSize = 1024

        contentSize = int(response.headers['content-length'])

        dateCount = 0

        with open(filePath,"wb") as file:

            for data in response.iter_content(chunk_size=chunkSize):

                file.write(data)

                dateCount = dateCount + len(data)

                nowJd = (dateCount / contentSize) * 100

                print("\r 文件下载进度: %d%%(%d%d) - %s" % (nowJd,dateCount,contentSize,filePath),end='')

def getUrl(**args):

    yesterday=(date.today() + timedelta(days = -2)).strftime("%Y-%m-%d")

    fileName='xxx-'+ yesterday +'.rar'

    url = "http://3.1.2.2:8079/"+ fileName

    return url,fileName

if __name__ == "__main__":

    headers = {"User-Agent":"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36"}

    fileUrl = getUrl()[0]

    filePath = "D:\downfile\\"+ getUrl()[1]

    downLoad(fileUrl,filePath)

pyinstaller .\downfile.py