String [] cost_titles={"餐饮", "交通", "住宿", "教育","娱乐","医疗","其他支出","工资","彩票","红包","其他收入"};怎么更改字符串的颜色

要更改字符串的颜色，你需要使用 HTML 标签。您可以使用以下代码将标题“餐饮”更改为红色：

String cost_title = "<font color='red'>餐饮</font>";

您可以根据需要更改颜色名称，例如将颜色更改为蓝色或绿色。确保将此代码插入到适当的位置，以便在应用程序中正确显示更改后的文本。

相关问题

url = "http://www.greenfinance.org.cn/" # 发送HTTP请求，获取网页HTML代码 response = requests.get(url) html = response.content # 使用BeautifulSoup解析HTML代码 soup = BeautifulSoup(html, 'html.parser') # 查找包含政策数据的HTML元素 policy_section = soup.find('div', class_='policy-section') # 查找政策标题和内容 policy_titles = policy_section.find_all('h3') policy_contents = policy_section.find_all('p') print(policy_section) # 输出政策数据 for i in range(len(policy_titles)): print(policy_titles[i].text) print(policy_contents[i].text) print() Traceback (most recent call last): File "/var/folders/wj/mvzl124x2xv1ywq89bjh3qkm0000gn/T/ipykernel_71039/3485610234.py", line 14, in <module> policy_titles = policy_section.find_all('h3') AttributeError: 'NoneType' object has no attribute 'find_all' url = "http://www.greenfinance.org.cn/" # 发送HTTP请求，获取网页HTML代码 response = requests.get(url) html = response.content # 使用BeautifulSoup解析HTML代码 soup = BeautifulSoup(html, 'html.parser') # 查找包含政策数据的HTML元素 policy_section = soup.find('div', class_='policy-section') # 打印policy_section的值 print(policy_section) # 查找政策标题和内容 policy_titles = policy_section.find_all('h3') policy_contents = policy_section.find_all('p') # 输出政策数据 for i in range(len(policy_titles)): print(policy_titles[i].text) print(policy_contents[i].text) print() None Traceback (most recent call last): File "/var/folders/wj/mvzl124x2xv1ywq89bjh3qkm0000gn/T/ipykernel_71039/3956965668.py", line 17, in <module> policy_titles = policy_section.find_all('h3') AttributeError: 'NoneType' object has no attribute 'find_all'

这段代码的问题是在查找包含政策数据的HTML元素时，返回的结果为None，即没有找到该元素。因此在之后的代码中，访问None的属性或方法时，会出现'NoneType' object has no attribute 'find_all'的错误提示。可能的原因是该网页的结构发生了变化或者网络连接出现了问题，建议检查一下网页的结构和网络连接状态。

import requests from bs4 import BeautifulSoup import xlwt title_list = [] datalist = [] headers = { "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36 Edg/114.0.1823.67" } # 获取网页信息 response = requests.get("https://movie.douban.com/top250", headers=headers) content = response.text soup = BeautifulSoup(content, "html.parser") all_titles = soup.findAll("span", attrs={"class": "title"}) for title in all_titles: title_string = title.string if "/" not in title_string: print(title_string.string) title_list.append(title_string.string) all_comments = soup.findAll("span", attrs={"class": "inq"}) for comment in all_comments: print(comment.string)能不能帮我将title.string和comment.string的数据写入excel文件

当然可以帮您将`title.string`和`comment.string`的数据写入Excel文件。您可以使用`xlwt`库来完成这个任务。以下是示例代码：

import requests
from bs4 import BeautifulSoup
import xlwt

title_list = []
comment_list = []

headers = {
    "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36 Edg/114.0.1823.67"
}

# 获取网页信息
response = requests.get("https://movie.douban.com/top250", headers=headers)
content = response.text
soup = BeautifulSoup(content, "html.parser")

all_titles = soup.findAll("span", attrs={"class": "title"})
for title in all_titles:
    title_string = title.string
    if "/" not in title_string:
        title_list.append(title_string)

all_comments = soup.findAll("span", attrs={"class": "inq"})
for comment in all_comments:
    comment_list.append(comment.string)

# 创建Excel文件和工作表
workbook = xlwt.Workbook()
worksheet = workbook.add_sheet("Movie Comments")

# 写入数据到Excel文件
for i in range(len(title_list)):
    worksheet.write(i, 0, title_list[i])
    worksheet.write(i, 1, comment_list[i])

# 保存Excel文件
workbook.save("movie_comments.xls")

运行上述代码后，将会在当前目录下生成一个名为`movie_comments.xls`的Excel文件，其中包含了电影标题和评论内容的数据。