[Python知识库]记录第一次爬虫

第一次的爬虫尝试，在此记录下代码，想请教大佬如何用f-string那种格式表示地址拼接，format不够美观。

import requests
import time
import random


class BaiduSpider:
    def __init__(self):
        self.url = "https://www.baidu.com/s?wd={}&pn={}"
        self.headers = {
            "User-Agent": "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.1 (KHTML, like Gecko) Chrome/14.0.835.163 Safari/535.1"}

    def get_html(self, url):
        html = requests.get(url=url,
                            headers=self.headers).content.decode("utf-8", "ignore")  # decode内用原网站查看charset获得
        return html

    def parse_html(self):
        pass

    def save_html(self, filename, html):
        with open(filename, "w", encoding="utf-8") as f:  # window记得加encoding
            f.write(html)

    def crawl(self):
        """
        程序入口
        """
        name = input("请输入查询明星：")
        start = int(input("请输入起始页："))
        end = int(input("请输入结束页："))
        for page in range(start, end + 1):
            # 拼接地址
            pn = (page - 1) * 10
            page_url = self.url.format(name, pn)  # 在self.url.format中传入name,pn数据
            html = self.get_html(url=page_url)  # 得到完整的url
            filename = f"{name}_第{page}页.html"
            self.save_html(filename, html)  # 在self.save_html中传入数据
            time.sleep(random.uniform(0, 2))
            # 爬取完成提示
            print(f"第{page}页爬取成功啦")


if __name__ == '__main__':
    spider = BaiduSpider()
    spider.crawl()