import os

def batch_rename(directory, old_ext, new_ext):
  """批量重命名文件擴(kuò)展名。

  Args:
    directory: 要處理的目錄路徑。
    old_ext: 要替換的舊擴(kuò)展名。
    new_ext: 要替換的新擴(kuò)展名。
  """

  for filename in os.listdir(directory):
    if filename.endswith(old_ext):
      base_name = os.path.splitext(filename)[0]
      new_filename = base_name + new_ext
      old_path = os.path.join(directory, filename)
      new_path = os.path.join(directory, new_filename)
      os.rename(old_path, new_path)

# 示例用法：將當(dāng)前目錄下所有 ".txt" 文件重命名為 ".md" 文件
batch_rename(".", ".txt", ".md")

import requests
from bs4 import BeautifulSoup
import os

def download_images(url, save_dir):
  """下載網(wǎng)頁上的所有圖片。

  Args:
    url: 要下載圖片的網(wǎng)頁地址。
    save_dir: 保存圖片的目錄路徑。
  """

  response = requests.get(url)
  soup = BeautifulSoup(response.text, 'html.parser')

  # 創(chuàng)建保存目錄
  if not os.path.exists(save_dir):
    os.makedirs(save_dir)

  # 找到所有圖片標(biāo)簽
  img_tags = soup.find_all('img')

  # 下載每張圖片
  for i, img_tag in enumerate(img_tags):
    img_url = img_tag.get('src')
    if img_url:
      img_data = requests.get(img_url).content
      img_name = f"image_{i+1}.jpg"
      img_path = os.path.join(save_dir, img_name)
      with open(img_path, 'wb') as f:
        f.write(img_data)
      print(f"Downloaded: {img_name}")

# 示例用法：下載百度首頁的圖片
download_images("https://www.baidu.com", "baidu_images")

import smtplib
from email.mime.text import MIMEText

def send_email(sender_email, sender_password, receiver_email, subject, message):
  """發(fā)送郵件通知。

  Args:
    sender_email: 發(fā)送方郵箱地址。
    sender_password: 發(fā)送方郵箱密碼。
    receiver_email: 接收方郵箱地址。
    subject: 郵件主題。
    message: 郵件內(nèi)容。
  """

  msg = MIMEText(message, 'plain', 'utf-8')
  msg['Subject'] = subject
  msg['From'] = sender_email
  msg['To'] = receiver_email

  try:
    with smtplib.SMTP_SSL('smtp.gmail.com', 465) as smtp:
      smtp.login(sender_email, sender_password)
      smtp.send_message(msg)
    print("郵件發(fā)送成功！")
  except Exception as e:
    print(f"郵件發(fā)送失?。簕e}")

# 示例用法：發(fā)送郵件通知
send_email("your_email@gmail.com", "your_password", "receiver@example.com", "腳本執(zhí)行完畢", "腳本已成功執(zhí)行！")

import csv

def read_csv(file_path):
  """讀取 CSV 文件。

  Args:
    file_path: CSV 文件路徑。
  """

  with open(file_path, 'r', encoding='utf-8') as f:
    reader = csv.reader(f)
    # 跳過標(biāo)題行
    next(reader)
    for row in reader:
      print(row)

# 示例用法：讀取名為 "data.csv" 的 CSV 文件
read_csv("data.csv")

import csv

def write_csv(file_path, data):
  """將數(shù)據(jù)寫入 CSV 文件。

  Args:
    file_path: CSV 文件路徑。
    data: 要寫入的數(shù)據(jù)，格式為列表的列表。
  """

  with open(file_path, 'w', encoding='utf-8', newline='') as f:
    writer = csv.writer(f)
    writer.writerows(data)

# 示例用法：將數(shù)據(jù)寫入名為 "data.csv" 的 CSV 文件
data = [
  ["Name", "Age", "City"],
  ["Alice", 25, "New York"],
  ["Bob", 30, "London"],
]
write_csv("data.csv", data)

import requests
from bs4 import BeautifulSoup

def scrape_website(url):
  """爬取網(wǎng)頁數(shù)據(jù)。

  Args:
    url: 要爬取數(shù)據(jù)的網(wǎng)頁地址。
  """

  response = requests.get(url)
  soup = BeautifulSoup(response.text, 'html.parser')

  # 提取數(shù)據(jù)，例如新聞標(biāo)題
  titles = [title.text.strip() for title in soup.find_all('h2', class_='news-title')]

  # 打印提取的數(shù)據(jù)
  for title in titles:
    print(title)

# 示例用法：爬取新浪新聞首頁的新聞標(biāo)題
scrape_website("https://news.sina.com.cn/")

from selenium import webdriver

def test_login(url, username, password):
  """測試網(wǎng)站登錄功能。

  Args:
    url: 要測試的網(wǎng)站地址。
    username: 登錄用戶名。
    password: 登錄密碼。
  """

  driver = webdriver.Chrome()
  driver.get(url)

  # 找到用戶名和密碼輸入框，并輸入用戶名和密碼
  username_input = driver.find_element_by_id("username")
  password_input = driver.find_element_by_id("password")
  username_input.send_keys(username)
  password_input.send_keys(password)

  # 找到登錄按鈕，并點擊
  login_button = driver.find_element_by_id("login-button")
  login_button.click()

  # 檢查是否登錄成功
  if driver.current_url == "https://www.example.com/dashboard":
    print("登錄成功！")
  else:
    print("登錄失敗！")

  driver.quit()

# 示例用法：測試 example.com 網(wǎng)站的登錄功能
test_login("https://www.example.com/login", "testuser", "testpassword")

from PIL import Image

def resize_image(image_path, width, height):
  """縮放圖片大小。

  Args:
    image_path: 圖片路徑。
    width: 新的寬度。
    height: 新的高度。
  """

  img = Image.open(image_path)
  img = img.resize((width, height))
  img.save("resized_" + image_path)

# 示例用法：將圖片 "image.jpg" 縮放為 200x200 像素
resize_image("image.jpg", 200, 200)

import matplotlib.pyplot as plt

def plot_chart(x, y):
  """繪制折線圖。

  Args:
    x: x 軸數(shù)據(jù)。
    y: y 軸數(shù)據(jù)。
  """

  plt.plot(x, y)
  plt.xlabel("X 軸")
  plt.ylabel("Y 軸")
  plt.title("折線圖")
  plt.show()

# 示例用法：繪制 x=[1,2,3], y=[4,5,6] 的折線圖
plot_chart([1, 2, 3], [4, 5, 6])

from flask import Flask

app = Flask(__name__)

@app.route("/")
def hello():
  return "Hello, world!"

if __name__ == "__main__":
  app.run(debug=True)