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This article mainly explains "how to use python to download pictures in batches." Interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Let Xiaobian take you to learn "how to use python to download pictures in batches"!

from time import timefrom threading import Threadimport requestsclass 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(): #Get network resources through the get function of the requests module resp = requests.get( 'http://api.tianapi.com/meinv/? key=keyvalue4&num=10') #Parse JSON data returned by the server into a dictionary data_model = resp.json() for mm_dict in data_model['newslist']: url = mm_dict['picUrl'] #Image download via multithreading DownloadHanlder(url).start()if __name__ == '__main__': main()

The Thread module provides the Thread class to handle threads, and the Thread class provides the following methods: run(): A method to indicate thread activity. start(): Start thread activity.

The Thread class contains the method start() defined as follows:

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() At this point, I believe that everyone has a deeper understanding of "how to use python to download pictures in batches", so let's actually operate it! Here is the website, more related content can enter the relevant channels for inquiry, pay attention to us, continue to learn!

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