html网页源码为<span title="11.580" class="stock-price ellipsis" data-v-5366a542="">11.580</span>怎么爬取中间的数据11.580

您可以使用Python中的BeautifulSoup库和正则表达式来爬取HTML网页源码中的数据。以下是一个示例代码：

import requests
from bs4 import BeautifulSoup
import re

url = 'http://example.com' # 将网页的URL替换为您要爬取的网页URL
response = requests.get(url)
soup = BeautifulSoup(response.text, 'html.parser')
span_element = soup.find('span', {'class': 'stock-price'})
data = span_element.get_text()
match = re.search(r'\d+\.\d+', data)
if match:
    result = match.group()
    print(result) # 将输出11.580
else:
    print('No match found')

在上面的代码中，我们首先使用requests库获取网页的HTML源码。然后，我们使用BeautifulSoup库将HTML源码解析为一个可操作的树状结构。接下来，我们使用find方法从树状结构中找到包含我们想要爬取数据的span标签。然后，我们使用get_text方法获取该标签的文本内容，并使用正则表达式从中提取出我们需要的数据。最后，我们将提取出来的数据打印到控制台上。

相关问题

<li class="new-works-box fl"> <a class="relative block works-detail hover-none new-works-img-box" title="湖洞水风光" hidefocus="true" href="//www.nipic.com/show/43693997.html"><span class="for-vertical"></span><span><img src="//static.ntimg.cn/original/images/grey.gif" data-src="//pic.nximg.cn/pic/20230525/9446643_143102439100_4.jpg" alt="湖洞水风光"/></span></a> <div class="new-search-works-info"> <a href="//www.nipic.com/show/43693997.html" class="search-works-name ellipsis search-left-box" title="湖洞水风光">湖洞水风光</a> <span class="search-works-price search-right-box">共享分:<span class="red">100</span></span> </div> </li> 爬虫 提取出这段文本中的title和data-src

可以使用正则表达式来提取出title和data-src，示例代码如下：

import re

text = '<li class="new-works-box fl"> <a class="relative block works-detail hover-none new-works-img-box" title="湖洞水风光" hidefocus="true" href="//www.nipic.com/show/43693997.html"><span class="for-vertical"></span><span><img src="//static.ntimg.cn/original/images/grey.gif" data-src="//pic.nximg.cn/pic/20230525/9446643_143102439100_4.jpg" alt="湖洞水风光"/></span></a> <div class="new-search-works-info"> <a href="//www.nipic.com/show/43693997.html" class="search-works-name ellipsis search-left-box" title="湖洞水风光">湖洞水风光</a> <span class="search-works-price search-right-box">共享分:<span class="red">100</span></span> </div> </li>'

title_pattern = re.compile(r'title="([^"]*)"')
data_src_pattern = re.compile(r'data-src="([^"]*)"')

title_match = title_pattern.search(text)
data_src_match = data_src_pattern.search(text)

if title_match:
    title = title_match.group(1)
    print(title)

if data_src_match:
    data_src = data_src_match.group(1)
    print(data_src)

输出结果：

湖洞水风光
//pic.nximg.cn/pic/20230525/9446643_143102439100_4.jpg

<main-content :ifDetail="true"> <div class="two-side"> <div class="main-left"> <el-form :model="form" :rules="rules" ref="form" label-width="120px"> <el-form-item label="选择下载模块" prop="accountName"> <el-input v-model.trim="form.accountName" :maxlength="50"></el-input> </el-form-item> <el-form-item label="倾斜度"> <el-slider v-model.number="form.rotate" :min="-180" :max="180"></el-slider> </el-form-item> <el-form-item label="文字"> <el-input type="textarea" v-model="form.text"></el-input> </el-form-item> <el-form-item label="文字大小"> <el-input-number v-model.number="form.fontSize" :min="10" :max="50"></el-input-number> px </el-form-item> <el-form-item label="位置"> <el-select placeholder="请选择位置" v-model="form.alignment"> <el-option v-for="item in options" :key="item.value" :label="item.label" :value="item.value"></el-option> </el-select> </el-form-item> <el-form-item> <el-select v-if="form.alignment === 2" placeholder="请选择位置" v-model="form.textPosition"> <el-option v-for="item in textPositionOptions" :key="item.value" :label="item.label" :value="item.value" ></el-option> </el-select> </el-form-item> </el-form> {{ watermarkStyle }} </div> <div class="main-right" id="show"> <div class="watermark"> <span :style="watermarkStyle" ref="showText" style="word-break:break-all;display: inline-block">{{ form.text }}</span> </div> </div> </div> </main-content> 左边来控制右边div里水印展示，代码怎么写

您可以在 `<el-form>` 标签上绑定 `@input` 事件，当表单数据发生改变时，触发该事件，然后在事件处理函数中计算出水印的样式，并将样式绑定到 `<span>` 标签上。具体实现代码如下：

<template>
  <main-content :ifDetail="true">
    <div class="two-side">
      <div class="main-left">
        <el-form :model="form" :rules="rules" ref="form" label-width="120px" @input="handleInput">
          <!-- 表单项省略 -->
        </el-form>
      </div>
      <div class="main-right" id="show">
        <div class="watermark">
          <span :style="watermarkStyle" ref="showText" style="word-break:break-all;display: inline-block">{{ form.text }}</span>
        </div>
      </div>
    </div>
  </main-content>
</template>

<script>
export default {
  data() {
    return {
      form: {
        accountName: '',
        rotate: 0,
        text: '',
        fontSize: 16,
        alignment: 1,
        textPosition: 1
      },
      options: [
        { label: '左上', value: 1 },
        { label: '居中', value: 2 },
        { label: '右下', value: 3 }
      ],
      textPositionOptions: [
        { label: '正常', value: 1 },
        { label: '斜体', value: 2 }
      ]
    }
  },
  computed: {
    watermarkStyle() {
      const { rotate, fontSize, alignment, textPosition } = this.form
      const deg = rotate + (textPosition === 2 ? -45 : 0)
      const translateX =
        alignment === 1 ? '-10%' : alignment === 2 ? '-50%' : '90%'
      const translateY =
        alignment === 1 ? '-10%' : alignment === 2 ? '-50%' : '90%'
      const transform = `rotate(${deg}deg)`
      const style = {
        position: 'absolute',
        top: 0,
        left: 0,
        bottom: 0,
        right: 0,
        fontSize: `${fontSize}px`,
        transform: transform,
        '-webkit-transform': transform,
        '-ms-transform': transform,
        '-moz-transform': transform,
        '-o-transform': transform,
        opacity: '0.2',
        'pointer-events': 'none',
        'text-align': 'center',
        'z-index': 9999,
        transformOrigin: '50% 50%',
        '-webkit-transform-origin': '50% 50%',
        '-ms-transform-origin': '50% 50%',
        '-moz-transform-origin': '50% 50%',
        '-o-transform-origin': '50% 50%',
        color: '#000',
        'word-break': 'break-all',
        'white-space': 'pre-wrap',
        'max-height': '100%',
        'max-width': '100%',
        overflow: 'hidden',
        'text-overflow': 'ellipsis',
        '-webkit-text-fill-color': 'transparent',
        '-webkit-background-clip': 'text',
        'background-clip': 'text',
        '-webkit-user-select': 'none',
        '-moz-user-select': 'none',
        '-ms-user-select': 'none',
        userSelect: 'none',
        '-webkit-line-clamp': '1',
        display: 'flex',
        'align-items': 'center',
        'justify-content': 'center',
        'transform-style': 'preserve-3d'
      }
      if (textPosition === 2) {
        style.padding = '0.5rem'
        style.background =
          'linear-gradient(to right bottom, rgba(255, 255, 255, 0.2) 0%, rgba(255, 255, 255, 0.2) 45%, rgba(255, 255, 255, 0) 50%, rgba(255, 255, 255, 0.2) 55%, rgba(255, 255, 255, 0.2) 100%)'
      }
      style.transform += ` translate(${translateX}, ${translateY})`
      style['-webkit-transform'] += ` translate(${translateX}, ${translateY})`
      style['-moz-transform'] += ` translate(${translateX}, ${translateY})`
      style['-ms-transform'] += ` translate(${translateX}, ${translateY})`
      style['-o-transform'] += ` translate(${translateX}, ${translateY})`
      return style
    }
  },
  methods: {
    handleInput() {
      this.$nextTick(() => {
        const { width, height } = this.$refs.show.getBoundingClientRect()
        const { offsetWidth, offsetHeight } = this.$refs.showText
        if (width === 0 || height === 0 || offsetWidth === 0 || offsetHeight === 0) {
          return
        }
        const scaleX = width / offsetWidth
        const scaleY = height / offsetHeight
        const scale = Math.min(scaleX, scaleY)
        this.$refs.showText.style.transform += `scale(${scale})`
        this.$refs.showText.style['-webkit-transform'] += `scale(${scale})`
        this.$refs.showText.style['-moz-transform'] += `scale(${scale})`
        this.$refs.showText.style['-ms-transform'] += `scale(${scale})`
        this.$refs.showText.style['-o-transform'] += `scale(${scale})`
      })
    }
  }
}
</script>

代码中的 `watermarkStyle` 计算属性用于计算水印的样式，`handleInput` 方法用于在计算出水印样式后，将水印按照比例缩小并居中显示。注意，为了保证水印样式的正确性，需要在表单项加载完成之后计算水印样式，因此需要在 `handleInput` 方法中使用 `$nextTick` 方法等待表单项加载完成再进行计算。