用Python语言编写爬取百度图片中猫和狗的图片各100张，将图片存入相应文件夹，两个文件夹分别为cat和dog的代码

这是一段Python代码，可以爬取百度图片中猫和狗的图片各100张，并将图片存入相应文件夹，两个文件夹分别为cat和dog：

import requests
import os

def download_images(keyword, folder):
    if not os.path.exists(folder):
        os.mkdir(folder)
    url = 'https://image.baidu.com/search/acjson'
    headers = {
        'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36'
    }
    params = {
        'tn': 'resultjson',
        'logid': '7124381283671390293',
        'ipn': 'rj',
        'ct': '201326592',
        'is': '',
        'fp': 'result',
        'queryWord': keyword,
        'cl': '2',
        'lm': '-1',
        'ie': 'utf-8',
        'oe': 'utf-8',
        'adpicid': '',
        'st': '-1',
        'z': '',
        'ic': '0',
        'word': keyword,
        's': '',
        'se': '',
        'tab': '',
        'width': '',
        'height': '',
        'face': '0',
        'istype': '2',
        'qc': '',
        'nc': '1',
        'fr': '',
        'expermode': '',
        'force': '',
        'pn': '',
        'rn': '30',
        'gsm': '1e',
        '1590666527759': ''
    }
    for i in range(0, 100, 30):
        params['pn'] = str(i)
        response = requests.get(url, headers=headers, params=params)
        json_data = response.json()
        for item in json_data['data']:
            if item.get('thumbURL') != None:
                image_url = item['thumbURL']
                try:
                    response = requests.get(image_url, headers=headers, timeout=10)
                    content = response.content
                    file_path = os.path.join(folder, item['di'] + '.jpg')
                    with open(file_path, 'wb') as f:
                        f.write(content)
                except Exception as e:
                    print(e)

download_images('猫', 'cat')
download_images('狗', 'dog')

这段代码的原理是通过调用百度图片搜索接口，根据关键词获取图片的链接，在通过requests.get方法发送请求获取图片内容，并将图片存储到本地文件夹中。