Question

您好，我希望能够从此网站获取价格，将其解析为整数，然后平均。尝试了几种方法，但仍在努力解析最终数字。

import requests
from bs4 import BeautifulSoup

URL = 'https://www.watchfinder.co.uk/search?q=114060&orderby=AgeNewToOld'

headers = {
    'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.87 Safari/537.36'}

page = requests.get(URL, headers=headers)

soup = BeautifulSoup(page.content, 'html.parser')


prices = soup.find_all(class_=('prods_price'))
for price in prices:
    price = price.text
    print(price)

这给了我

£9,450



£8,750



£8,450

有没有一种方法可以对它们进行平均？抱歉，谢谢！

Answer 1

下面是一个类似于您的示例。如果愿意，您可以使其更精简，但这应该可以使列表中的数字平均。

编辑：用美元符号替换您的欧元符号。

要将字符串转换为int，只需使用int（string）

price = ['$900','$100','$500','$50']


runSum = 0

for i in price:
    convt = i.replace('$', '') 
    numHld = int(convt)
    runSum = runSum + numHld

avg = runSum/len(price)

print(str(avg))

Answer 2

以下解决方案会读取您的测试列表，然后使用自定义函数convert_to_num来找到平均值

test = ['£9,450', "£8,750", "£8,450"]

def convert_to_num(my_list):
        total = 0
        count = 0
        for item in my_list:
                item = item.replace("£","").replace(",","")
                total += int(item)
                count += 1

        return total / count

new_avg = convert_to_num(test)
print(new_avg)

返回8883.333333333334

解析列表中的平均价格

2 个答案: