完成这段代码:import csv from pathlib import Path from bs4 import BeautifulSoup as BS def fun2(filename='test'): in_file = f'{path}/{filename}.html' out_file = f'{path}/{filename}.csv'将以下表格的所有数据用bs4提取出来,并保存为同名的csv文件:<!DOCTYPE html><html><head> <title>Test Table</title></head><body> <table border="1"> <tr> <td>1</td> <td>2</td> </tr> <tr> <td>3</td> <td>4</td> </tr> <tr> <td>5</td> <td>6</td> </tr> </table></body></html>
时间: 2023-06-02 11:02:40 浏览: 184
import csv
from pathlib import Path
from bs4 import BeautifulSoup as BS
path = Path.cwd()
def fun2(filename='test'):
in_file = f'{path}/{filename}.html'
out_file = f'{path}/{filename}.csv'
with open(in_file, 'r') as f:
soup = BS(f, 'html.parser')
table = soup.find('table')
rows = table.find_all('tr')
with open(out_file, 'w', newline='') as csvfile:
writer = csv.writer(csvfile)
for row in rows:
cols = row.find_all('td')
cols = [col.text.strip() for col in cols]
writer.writerow(cols)
相关问题
import os import re import csv from bs4 import BeautifulSoup folder_path = 'C:/Users/test/Desktop/DIDItest' html_files = [] # 遍历文件夹及其子文件夹下所有HTML文件 for root, dirs, files in os.walk(folder_path): for file in files: if file.endswith('.html'): html_files.append(os.path.join(root, file))打开并提取所有html文件源代码
您好!要打开并提取所有HTML文件的源代码,可以按照以下步骤进行操作:
1. 导入所需的库:
```python
import os
from bs4 import BeautifulSoup
```
2. 指定文件夹路径和一个空列表来存储HTML文件的路径:
```python
folder_path = 'C:/Users/test/Desktop/DIDItest'
html_files = []
```
3. 使用`os.walk()`函数遍历文件夹及其子文件夹下的所有文件,并筛选出以`.html`结尾的文件:
```python
for root, dirs, files in os.walk(folder_path):
for file in files:
if file.endswith('.html'):
html_files.append(os.path.join(root, file))
```
4. 循环遍历所有HTML文件,并使用BeautifulSoup库打开并提取源代码:
```python
for file_path in html_files:
with open(file_path, 'r', encoding='utf-8') as file:
html_source_code = file.read()
soup = BeautifulSoup(html_source_code, 'html.parser')
# 在这里可以对源代码进行进一步的处理或提取需要的信息
```
请注意,这里使用了BeautifulSoup库来解析HTML文件,您需要确保已经安装了该库,可以使用`pip install beautifulsoup4`来安装。
希望能对您有所帮助!如有任何疑问,请随时提问。
请帮我解释一下这段代码,并列举出其中的关键代码:import requests from bs4 import BeautifulSoup import time import pymysql import pandas as pd import numpy as np import matplotlib.pyplot as plt from travel_save_file import * import re for page in range(1,200): print(page)
这段代码包含了导入必要的 Python 模块和库,使用了循环控制语句和打印语句,其中的关键代码包括:
- import requests:导入 requests 模块,用于发送 HTTP 请求和处理响应;
- from bs4 import BeautifulSoup:导入 BeautifulSoup 模块,用于解析 HTML 和 XML 文档;
- for page in range(1,200): 循环语句,从 1 循环到 199(不包括200);
- print(page):打印当前循环的页数。
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