本文实例讲述了Python实现使用request模块下载图片。分享给大家供大家参考，具体如下：
利用流传输下载图片
# -*- coding: utf-8 -*-
import requests
def download_image():
"""
demo:下载图片
:return:
"""
headers = {"User-Agent":"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2454.101 Safari/537.36"}
url = "https://timgsa.baidu.com/timg"
response = requests.get(url, headers=headers, stream=True)
#print str(response.text).decode('ascii').encode('gbk')
with open('demo.jpg', 'wb') as fd:
for chunk in response.iter_content(128):
fd.write(chunk)
download_image()
def download_image_improved():
"""demo: 下载图片"""
#伪造headers信息
headers = {
"User-Agent": "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2454.101 Safari/537.36"}
#限定URL
url = "https://timgsa.baidu.com/timg"
response = requests.get(url, headers=headers, stream=True)
from contextlib import closing
#用完流自动关掉
with closing(requests.get(url, headers=headers, stream=True)) as response:
#打开文件
with open('demo1.jpg', 'wb') as fd:
#每128写入一次
for chunk in response.iter_content(128):
fd.write(chunk)
download_image_improved()
运行结果（在当前目录下下载了一个demo.jpg文件）：
更多关于Python相关内容感兴趣的读者可查看本站专题：《Python函数使用技巧总结》、《Python面向对象程序设计入门与进阶教程》、《Python数据结构与算法教程》、《Python字符串操作技巧汇总》、《Python编码操作技巧总结》及《Python入门与进阶经典教程》
希望本文所述对大家Python程序设计有所帮助。