需求分析

• 从https://pic.netbian.com/4kfengjing/网站爬取图片，并保存

Python实现

• 获取待爬取网页

def get_htmls(pages=list(range(2, 5))):"""获取待爬取网页"""pages_list = []for page in pages:url = f"https://pic.netbian.com/4kfengjing/index_{page}.html"response = requests.get(url)response.encoding = 'gbk'pages_list.append(response.text)return pages_list
get_htmls(pages=list(range(2, 5)))

• 获取所有图片，并下载

def get_picturs(htmls):"""获取所有图片，并下载"""for html in htmls:soup = BeautifulSoup(html, 'html.parser')pic_li = soup.find('div', id='main').find('div', class_='slist').find('ul', class_='clearfix')image_path = pic_li.find_all('img')for file in image_path:pic_name = './practice05/' + file['alt'].replace(" ",'_') + '.jpg'src = file['src']src = f"https://pic.netbian.com/{src}"response = requests.get(src)with open(pic_name, 'wb') as f:f.write(response.content)print("图片已下载并保存为:{}".format(pic_name))htmls = get_htmls(pages=list(range(2, 5)))
get_picturs(htmls)

• 爬取结果展示