45个Python实用小技巧(4)

45个Python实用小技巧

43、网页抓取请求和BeautifulSoup

import requests
from bs4 import BeautifulSoup
url = 'https://example.com'
response = requests.get(url)
soup = BeautifulSoup(response.text, 'html.parser')
# 获取网页数据
title = soup.title.text

44、使用smtplib发送邮件

import smtplib
from email.mime.text import MIMEText
# 启动邮件服务
server = smtplib.SMTP('smtp.gmail.com', 587)
server.starttls()
# 登录电子邮件账户
server.login('your_email@gmail.com', 'your_password')
# 发送邮件
msg = MIMEText('Hello, Python!')
msg['Subject'] = 'Python Email'
server.sendmail('your_email@gmail.com', 'recipient@example.com', msg.as_string())

45、使用JSON文件

import json
data = {'name': 'John', 'age': 30}
# 写入JSON文件
with open('data.json', 'w') as json_file:
    json.dump(data, json_file)
# 读取JSON文件
with open('data.json', 'r') as json_file:
    loaded_data = json.load(json_file)

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