python 中的 f 字符串是否有替代方案？

Question

所以我正在用 link 抓取这个网站：https://www.americanexpress.com/in/credit-cards/payback-card/ 使用美丽的汤和 python.

link = 'https://www.americanexpress.com/in/credit-cards/payback-card/'
html = urlopen(link)
soup = BeautifulSoup(html, 'lxml')

details = []

for span in soup.select(".why-amex__subtitle span"):
    details.append(f'{span.get_text(strip=True)}: {span.find_next("span").get_text(strip=True)}')

print(details)

输出：

['EARN POINTS: Earn multiple Points from more than 50 PAYBACK partners2and 2 PAYBACK Points from American\xa0Express PAYBACK Credit\xa0Card for every Rs.\xa0100 spent', 'WELCOME GIFT: Get Flipkart voucher worth Rs. 7503on taking 3 transactions within 60 days of Cardmembership', 'MILESTONE BENEFITS: Flipkart vouchers4worth Rs. 7,000 on spending Rs. 2.5 lacs in a Cardmembership yearYou will earn a Flipkart voucher4worth Rs. 2,000 on spending Rs. 1.25 lacs in a Cardmembership year. Additionally, you will earn a Flipkart voucher4worth Rs. 5,000 on spending Rs. 2.5 lacs in a Cardmembership year.']

正如您在输出中看到的那样，有 \xa0 个字符要从字符串中删除。

我尝试使用 replace 函数，但它不适用于 f 字符串，因为涉及到 \。

details.append(f'{span.get_text(strip=True)}: {span.find_next("span").get_text(strip=True).replace("\xa0","")}')

有没有其他方法可以解决这个问题？

非常感谢任何帮助!!!

Answer 1

这可能是一个临时解决方案，因为 .replace("\xa0","") 不能在内部工作之前在外部进行更改：

link = 'https://www.americanexpress.com/in/credit-cards/payback-card/'
html = urlopen(link)
soup = BeautifulSoup(html, 'lxml')

details = []

for span in soup.select(".why-amex__subtitle span"):

    element = span.get_text(strip=True).replace("\xa0","")
    next_element = span.find_next("span").get_text(strip=True).replace("\xa0","")
    details.append(f'{element}: {next_element}')

print(details)

Answer 2

您可以使用 unicodedata 删除 \xa0 个字符。当包含在 f 字符串中时，它不会运行，但是这样做：

from bs4 import BeautifulSoup
from unicodedata import normalize

link = 'https://www.americanexpress.com/in/credit-cards/payback-card/'
html = urlopen(link)
soup = BeautifulSoup(html, 'lxml')

details = []

for span in soup.select(".why-amex__subtitle span"):
    a = normalize('NFKD', span.get_text(strip=True))
    b = normalize('NFKD',span.find_next("span").get_text(strip=True))
    details.append(f'{a}: {b}')

print(details)

python 中的 f 字符串是否有替代方案？

Is there any alternative for \ in f string in python?

python

beautifulsoup

string-formatting

web-scraping

scrapinghub