python输入关键字爬取图片

使用requests发起请求，re匹配url进行下载

代码如下

import requests
import re
import os
import time

headers = {‘User-Agent’:‘Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.125 Safari/537.36’}
name = input(‘您要爬取什么图片:’)
num = 0
x = input(‘您要爬取几张呢?输入1等于60张图片。:’)
name_1 = ‘F:\my_demo\img’ #保存图片文件夹
if not os.path.exists(name_1):#判断文件夹是否存在
os.mkdir(name_1)
if os.path.getsize(name_1): #判断文件夹是否为空
for i in os.listdir(name_1):
os.remove(f’{name_1}{i}‘)
for i in range(int(x)):
url = ‘https://image.baidu.com/search/flip?tn=baiduimage&ie=utf-8&word=’+name+’&pn=‘+str(i*30)
res = requests.get(url,headers=headers)
htlm_1 = res.content.decode()
a = re.findall('“objURL”:"(.?)",’,htlm_1)
for b in a:
num = num +1
try:
img = requests.get(b)
except Exception as e:
print(‘第’+str(num)+‘张图片无法下载------------’)
print(str(e))
continue
f = open(name_1+‘\image’+str(num)+‘.jpg’,‘ab’)
# print(f)
print(‘---------正在下载第’+str(num)+‘张图片----------’)
f.write(img.content)
f.close()
print(name)
print(‘下载完成’)