python实现爬取百度图片的方法示例

import jsonimport itertoolsimport urllibimport requestsimport osimport reimport sysword=input("请输入关键字：")path="./ok"if not os.path.exists(path):  os.mkdir(path)word=urllib.parse.quote(word)url = r"http://image.baidu.com/search/acjson?tn=resultjson_com&ipn=rj&ct=201326592&fp=result&queryWord={word}&cl=2&lm=-1&ie=utf-8&oe=utf-8&st=-1&ic=0&word={word}&face=0&istype=2nc=1&pn={pn}&rn=60"urls=(url.format(word=word,pn=x)for x in itertools.count(start=0,step=60))index=0str_table = {  '_z2C$q': ':',  '_z&e3B': '.',  'AzdH3F': '/'}char_table = {  'w': 'a',  'k': 'b',  'v': 'c',  '1': 'd',  'j': 'e',  'u': 'f',  '2': 'g',  'i': 'h',  't': 'i',  '3': 'j',  'h': 'k',  's': 'l',  '4': 'm',  'g': 'n',  '5': 'o',  'r': 'p',  'q': 'q',  '6': 'r',  'f': 's',  'p': 't',  '7': 'u',  'e': 'v',  'o': 'w',  '8': '1',  'd': '2',  'n': '3',  '9': '4',  'c': '5',  'm': '6',  '0': '7',  'b': '8',  'l': '9',  'a': '0'}i=1char_table = {ord(key): ord(value) for key, value in char_table.items()}for url in urls:  html=requests.get(url,timeout=10).text  a=re.compile(r'"objURL":"(.*?)"')  downURL=re.findall(a,html)  for t in downURL:    for key, value in str_table.items():        t = t.replace(key, value)    t=t.translate(char_table)    try:      html_1=requests.get(t)      if str(html_1.status_code)[0]=="4":        print('失败1')        continue    except Exception as e:      print('失败2')      continue    with open(path+"/"+str(i)+".jpg",'wb') as f:      f.write(html_1.content)    i=i+1