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在学数据可视化,缺少点数据进行实操,就想着从饿了么上面爬点外卖店信息。
主要是获取数据,所以代码比较简陋,直接上代码:
import requestsimport jsonimport csvdef crawler_ele(page=0):def get_page(page):url = 'https://h5.ele.me/restapi/shopping/v3/restaurants?latitude=xxxx&longitude=xxxx&offset={page}&limit=8&terminal=h5'.format(page=page*8)headers = { "user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.80 Safari/537.36", 'cookie': r'xxxx'}re = json.loads(requests.get(url,headers=headers).text)return rere = get_page(page)if re.get('items'):with open('data.csv','a',newline='') as f:writer = csv.DictWriter(f,fieldnames=['名称', '月销售量','配送费', '起送价', '风味','评分', '配送时长', '评分统计', '距离', '地址'])writer.writeheader()for item in re.get('items'):info = dict()restaurant = item.get('restaurant')info['地址'] = restaurant.get('address')info['配送费'] = restaurant.get('float_delivery_fee')info['名称'] = restaurant.get('name')info['配送时长'] = restaurant.get('order_lead_time')info['距离'] = restaurant.get('distance')info['起送价'] = restaurant.get('float_minimum_order_amount')info['评分'] = restaurant.get('rating')info['月销售量'] = restaurant.get('recent_order_num')info['评分统计'] = restaurant.get('rating_count')info['风味'] = restaurant.get('flavors')[0].get('name')writer.writerow(info) # print(info)if re.get('has_next') == True:crawler_page(page+1)crawler_ele(0)
在这里简单注释几句:
url 中的经纬度去掉了,可以自行查询添加需要爬取地点的经纬度,也可以通过调用地图api获取经纬度;
headers 需要加 Cookies ,不然会有登录权限限制爬取页数;
最后调用的是递归不是循环,所以保存结果的 csv 文件里面会有多个重复表头,可以用 Excel 打开删除重复值就可以了。
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