爬取该网页https://www.gupang.com/202305/64619.html
时间: 2023-06-21 09:04:27 浏览: 76
为了爬取该网页,我们可以使用Python中的requests和BeautifulSoup库。以下是代码示例:
```python
import requests
from bs4 import BeautifulSoup
url = "https://www.gupang.com/202305/64619.html"
response = requests.get(url)
soup = BeautifulSoup(response.content, "html.parser")
title = soup.find("h1", class_="title").text
content = soup.find("div", class_="content").text
print(title)
print(content)
```
这段代码首先发送了一个GET请求到目标网址,然后使用BeautifulSoup解析HTML内容。接下来,我们使用find方法找到标题所在的`<h1>`标签和内容所在的`<div>`标签,并打印它们的文本内容。注意,这里我们使用了`class_`参数来指定CSS类名,因为`class`是Python中的关键字。
相关问题
优化这段代码import requests from bs4 import BeautifulSoup url = "https://www.gupang.com/202305/64619.html" response = requests.get(url) soup = BeautifulSoup(response.content, "html.parser") title = soup.find("h1", class_="title").text content = soup.find("div", class_="content").text print(title) print(content)
可以使用以下方法进行优化:
1. 添加异常处理,以防止请求失败或解析失败导致程序崩溃:
```python
import requests
from bs4 import BeautifulSoup
url = "https://www.gupang.com/202305/64619.html"
try:
response = requests.get(url)
response.raise_for_status() # 抛出异常,如果请求失败
except requests.exceptions.RequestException as e:
print(e)
sys.exit(1)
soup = BeautifulSoup(response.content, "html.parser")
try:
title = soup.find("h1", class_="title").text
content = soup.find("div", class_="content").text
except AttributeError as e:
print(e)
sys.exit(1)
print(title)
print(content)
```
2. 使用`with`语句来管理资源,以确保在使用完文件或网络连接后自动释放资源:
```python
import requests
from bs4 import BeautifulSoup
url = "https://www.gupang.com/202305/64619.html"
try:
with requests.get(url) as response:
response.raise_for_status()
soup = BeautifulSoup(response.content, "html.parser")
title = soup.find("h1", class_="title").text
content = soup.find("div", class_="content").text
except (requests.exceptions.RequestException, AttributeError) as e:
print(e)
sys.exit(1)
print(title)
print(content)
```
这种方法可以避免手动关闭连接或文件,而且代码更加简洁。
PS D:\MyPython> & "C:/Program Files/Python39/python.exe" d:/MyPython/Crawler/Gupang.py 'NoneType' object has no attribute 'text' Traceback (most recent call last): File "d:\MyPython\Crawler\Gupang.py", line 10, in <module> title = soup.find("h1", class_="title").text AttributeError: 'NoneType' object has no attribute 'text' During handling of the above exception, another exception occurred: Traceback (most recent call last): File "d:\MyPython\Crawler\Gupang.py", line 14, in <module> sys.exit(1) NameError: name 'sys' is not defined
这个错误提示显示你的代码出现了两个错误。第一个错误是 `'NoneType' object has no attribute 'text'`,这通常是因为 `soup.find()` 方法没有找到要查找的标签。所以你需要检查一下你的 `soup.find()` 方法是否正确找到了标签。
第二个错误是 `NameError: name 'sys' is not defined`,这是因为你在代码中使用了 `sys.exit()` 方法,但是你没有导入 `sys` 模块。所以你需要在代码开头添加 `import sys`。