import osfor filename in os.listdir('.'):    os.rename(filename, filename.replace('old', 'new'))

import osfor root, dirs, files in os.walk('.'):    for name in files:        if os.path.getsize(os.path.join(root, name)) > 1024 * 1024:  # 大于1MB            print(os.path.join(root, name))

import osos.makedirs('dir/subdir/subsubdir', exist_ok=True)

import osfor root, dirs, files in os.walk('.', topdown=False):    for name in dirs:        dir_path = os.path.join(root, name)        if not os.listdir(dir_path):            os.rmdir(dir_path)

import shutilshutil.copy('source.txt', 'destination.txt')

import shutilshutil.move('source.txt', 'destination.txt')

with open('file.txt', 'r') as file:    content = file.read()

with open('file.txt', 'w') as file:    file.write('Hello, World!')

with open('file.txt', 'a') as file:    file.write('\nAppend this line.')

import osif os.path.exists('file.txt'):    print("File exists.")else:    print("File does not exist.")

import csvwith open('data.csv', 'r') as file:    reader = csv.reader(file)    for row in reader:        print(row)

import csvdata = [['Name', 'Age'], ['Alice', 30], ['Bob', 25]]with open('data.csv', 'w', newline='') as file:    writer = csv.writer(file)    writer.writerows(data)

import jsonwith open('data.json', 'r') as file:    data = json.load(file)

import jsondata = {'name': 'Alice', 'age': 30}with open('data.json', 'w') as file:    json.dump(data, file)

my_list = [1, 2, 2, 3, 4, 4, 5]unique_list = list(set(my_list))

my_list = [3, 1, 4, 1, 5, 9, 2, 6, 5, 3, 5]sorted_list = sorted(my_list)

my_list = [1, 2, 3, 4, 5]reversed_list = list(reversed(my_list))

list1 = [1, 2, 3]list2 = [4, 5, 6]combined_list = list1 + list2

my_list = [1, 2, 3, 4, 5]max_value = max(my_list)

my_list = [1, 2, 3, 4, 5]min_value = min(my_list)

import requestsresponse = requests.get('https://www.example.com')print(response.text)

from bs4 import BeautifulSoupsoup = BeautifulSoup(response.text, 'html.parser')titles = soup.find_all('h1')for title in titles:    print(title.text)

import requestsimg_data = requests.get('http://example.com/image.jpg').contentwith open('image.jpg', 'wb') as handler:    handler.write(img_data)

import requestspayload = {'key1': 'value1', 'key2': 'value2'}response = requests.post('https://httpbin.org/post', data=payload)print(response.text)

import requestsresponse = requests.get('https://api.example.com/data')data = response.json()print(data)

import requeststry:    response = requests.get('https://www.example.com', timeout=5)except requests.Timeout:    print("The request timed out")

import requeststry:    response = requests.get('https://www.example.com')    response.raise_for_status()except requests.HTTPError as http_err:    print(f"HTTP error occurred: {http_err}")except Exception as err:    print(f"Other error occurred: {err}")

import requestssession = requests.Session()response = session.get('https://www.example.com')print(response.text)

import requestsresponse = requests.get('https://www.example.com')print(response.headers)

import requestsheaders = {'User-Agent': 'MyApp/1.0'}response = requests.get('https://www.example.com', headers=headers)print(response.text)

import scheduleimport timedef job():    print("I'm working...")schedule.every(10).seconds.do(job)while True:    schedule.run_pending()    time.sleep(1)

import smtplibfrom email.mime.text import MIMETextmsg = MIMEText('Hello, this is a test email.')msg['Subject'] = 'Test Email'msg['From'] = '[email protected]'msg['To'] = '[email protected]'s = smtplib.SMTP('localhost')s.send_message(msg)s.quit()

import subprocessresult = subprocess.run(['ls', '-l'], stdout=subprocess.PIPE)print(result.stdout.decode('utf-8'))

import zipfilewith zipfile.ZipFile('archive.zip', 'w', zipfile.ZIP_DEFLATED) as zipf:    zipf.write('file.txt')

import zipfilewith zipfile.ZipFile('archive.zip', 'r') as zipf:    zipf.extractall('extracted_files')

import timeimport osimport hashlibdef get_file_hash(filename):    hasher = hashlib.md5()    with open(filename, 'rb') as f:        buf = f.read()        hasher.update(buf)    return hasher.hexdigest()last_hash = Nonewhile True:    current_hash = get_file_hash('file.txt')    if current_hash != last_hash:        print("File has changed!")        last_hash = current_hash    time.sleep(1)

import randomrandom_number = random.randint(1, 100)print(random_number)

import randomimport stringrandom_string = ''.join(random.choices(string.ascii_letters + string.digits, k=12))print(random_string)

import randomimport stringpassword = ''.join(random.choices(string.ascii_letters + string.digits, k=12))print(password)

import osapi_key = os.getenv('API_KEY')print(api_key)

text = "This is a test. This is only a test."word_count = len(text.split())print(f"Word count: {word_count}")

text = "Hello, World!"new_text = text.replace("World", "Python")print(new_text)

text = "apple,banana,orange"fruits = text.split(',')print(fruits)

fruits = ['apple', 'banana', 'orange']text = ', '.join(fruits)print(text)

text = "Hello, World!"if "World" in text:    print("Found 'World' in the text.")

text = "hello, world!"upper_text = text.upper()print(upper_text)

text = "HELLO, WORLD!"lower_text = text.lower()print(lower_text)

text = "   Hello, World!   "stripped_text = text.strip()print(stripped_text)

text = "Hello,   World!"no_space_text = text.replace(" ", "")print(no_space_text)

name = "Alice"age = 30formatted_text = f"Name: {name}, Age: {age}"print(formatted_text)