import requests  import re  # 請求頭  headers = {    'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36'  }    def get_all(url,key):    for page in range(1,200,2):      params = {        'keyword':key,        'enc':'utf-8',        'page':page      }      num = int((int(page)+1)/2)      try:        response = requests.get(url=url,params=params,headers=headers)        # 轉碼        content = response.text.encode(response.encoding).decode(response.apparent_encoding)        data_all = re.findall('<div class="p-price">.*?<i>(.*?)</i>.*?<div class="p-name p-name-type-2">.*?title="(.*?)"'                   '.*?<div class="p-shop".*?title="(.*?)"',content,re.S)        for i in data_all:          with open(key + '.txt', 'a+', encoding='utf-8') as f:            f.write('店鋪名稱：' + i[2]+'n'+'商品名稱：'+i[1]+'n'+'價格:'+i[0]+'nn')          print('第'+str(num)+'頁'+'數據下載中....')      except Exception as e:        print(e)    if __name__ == '__main__':    print('輸入要搜索的內容，獲取京東商城里面的商品名稱，店鋪名稱，商品價格')    key = input('輸入搜索內容：')    url = 'https://search.jd.com/Search?'    get_all(url,key)