Python3 使用requests模块显示下载大文件显示进度

咱们直接看代码：

参数看到不懂

很详细有没有：

懂了吗，不懂就收藏一下，可以拿来直接用？

可以关注 回复 ：tqdm

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

"""

@Time: 2018/1/16

@Author: songhao

@微信公众号: zeropython

@File: index.py

"""

importos

fromurllib.requestimporturlopen

importrequests

fromtqdmimporttqdm

defdownload_from_url(url, dst):

"""

@param: url to download file

@param: dst place to put the file

"""

file_size=int(urlopen(url).info().get('Content-Length',-1))

"""

print(urlopen(url).info())

# output

Server: AliyunOSS

Date: Tue, 19 Dec 2017 06:55:41 GMT

Content-Type: application/octet-stream

Content-Length: 29771146

Connection: close

x-oss-request-id: 5A38B7EDCE2B804FFB1FD51C

Accept-Ranges: bytes

ETag: "9AA9C1783224A1536D3F1E222C9C791B-6"

Last-Modified: Wed, 15 Nov 2017 10:38:33 GMT

x-oss-object-type: Multipart

x-oss-hash-crc64ecma: 14897370096125855628

x-oss-storage-class: Standard

x-oss-server-time: 4

"""

ifos.path.exists(dst):

first_byte=os.path.getsize(dst)

else:

first_byte=

iffirst_byte>=file_size:

returnfile_size

header={"Range":"bytes=%s-%s"%(first_byte, file_size)}

pbar=tqdm(

total=file_size,initial=first_byte,

unit='B',unit_scale=True,desc=url.split('/')[-1])

req=requests.get(url,headers=header,stream=True)

with(open(dst,'ab'))asf:

forchunkinreq.iter_content(chunk_size=1024):

ifchunk:

f.write(chunk)

pbar.update(1024)

pbar.close()

returnfile_size

if__name__=='__main__':

url="http://newoss.maiziedu.com/machinelearning/pythonrm/pythonrm5.mp4"

download_from_url(url,"./new.mp4")