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本篇内容主要讲解“如何使用python 批量下载图片”,感兴趣的朋友不妨来看看。本文介绍的方法操作简单快捷,实用性强。下面就让小编来带大家学习“如何使用python 批量下载图片”吧!
from time import time
from threading import Thread
import requests
class DownloadHanlder(Thread):
def __init__(self, url):
super().__init__()
self.url = url
def run(self):
filename = self.url[self.url.rfind('/') + 1:]
#get the filename from origin url with the value of :
# 'https://cache.yisu.com/upload/information/20210521/347/345442.jpg'
resp = requests.get(self.url)
with open('./pictest/' + filename, 'wb') as f:
f.write(resp.content)
def main():
# 通过requests模块的get函数获取网络资源
resp = requests.get(
'http://api.tianapi.com/meinv/?key=keyvalue4&num=10')
# 将服务器返回的JSON格式的数据解析为字典
data_model = resp.json()
for mm_dict in data_model['newslist']:
url = mm_dict['picUrl']
# 通过多线程的方式实现图片下载
DownloadHanlder(url).start()
if __name__ == '__main__':
main()线程模块提供了Thread类来处理线程,Thread类提供了以下方法: run(): 用以表示线程活动的方法。 start():启动线程活动。
其中,Thread类中含有方法start() 其定义如下:
def start(self):
"""Start the thread's activity.
It must be called at most once per thread object. It arranges for the
object's run() method to be invoked in a separate thread of control.
This method will raise a RuntimeError if called more than once on the
same thread object.
"""
if not self._initialized:
raise RuntimeError("thread.__init__() not called")
if self._started.is_set():
raise RuntimeError("threads can only be started once")
with _active_limbo_lock:
_limbo[self] = self
try:
_start_new_thread(self._bootstrap, ())
except Exception:
with _active_limbo_lock:
del _limbo[self]
raise
self._started.wait()到此,相信大家对“如何使用python 批量下载图片”有了更深的了解,不妨来实际操作一番吧!这里是亿速云网站,更多相关内容可以进入相关频道进行查询,关注我们,继续学习!
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