Python从入门到精通：10个超有趣脚本带你玩转编程！

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前言
Python作为当下最流行的编程语言之一，以其简洁的语法和强大的功能吸引了无数开发者。今天，我将为大家分享10个既有趣又实用的Python脚本，这些脚本涵盖了从基础到进阶的各种知识点，不仅能帮助你巩固Python基础，还能让你在实践中感受到编程的乐趣！

1. 猜数字游戏

import random

def guess_number():
    number = random.randint(1, 100)
    attempts = 0
    
    print("欢迎来到猜数字游戏！")
    print("我已经想好了一个1到100之间的数字，来猜猜看吧！")
    
    while True:
        guess = int(input("请输入你猜的数字: "))
        attempts += 1
        
        if guess < number:
            print("太小了，再大一点！")
        elif guess > number:
            print("太大了，再小一点！")
        else:
            print(f"恭喜你！猜对了！你用了{attempts}次尝试。")
            break

guess_number()

知识点：随机数生成、循环结构、条件判断、用户输入处理

2. 简易密码生成器

import random
import string

def generate_password(length=12):
    characters = string.ascii_letters + string.digits + string.punctuation
    password = ''.join(random.choice(characters) for _ in range(length))
    return password

print("生成的密码是:", generate_password())

知识点：字符串操作、随机选择、列表推导式

3. 网络爬虫 - 获取天气信息

import requests
from bs4 import BeautifulSoup

def get_weather(city):
    url = f"https://www.weather.com/weather/today/l/{city}"
    response = requests.get(url)
    soup = BeautifulSoup(response.text, 'html.parser')
    
    temperature = soup.find('span', {'class': 'CurrentConditions--tempValue--3KcTQ'}).text
    condition = soup.find('div', {'class': 'CurrentConditions--phraseValue--2xXSr'}).text
    
    print(f"{city}当前天气: {condition}, 温度: {temperature}")

get_weather("Beijing")

知识点：HTTP请求、HTML解析、BeautifulSoup库使用

4. 图片转ASCII艺术

from PIL import Image

def image_to_ascii(image_path, output_width=100):
    # ASCII字符集，从暗到亮
    ascii_chars = "@%#*+=-:. "
    
    # 打开并调整图片大小
    image = Image.open(image_path)
    width, height = image.size
    ratio = height / width
    new_height = int(output_width * ratio)
    resized_image = image.resize((output_width, new_height))
    
    # 转换为灰度图
    grayscale_image = resized_image.convert("L")
    pixels = grayscale_image.getdata()
    
    # 将像素映射到ASCII字符
    ascii_str = ""
    for pixel_value in pixels:
        ascii_str += ascii_chars[pixel_value // 25]
    
    # 格式化输出
    ascii_str_len = len(ascii_str)
    for i in range(0, ascii_str_len, output_width):
        print(ascii_str[i:i+output_width])

image_to_ascii("example.jpg")

知识点：图像处理、Pillow库使用、ASCII艺术生成

5. 简易计算器

def calculator():
    print("简易计算器")
    print("支持的操作: +, -, *, /")
    
    while True:
        try:
            num1 = float(input("输入第一个数字: "))
            operator = input("输入运算符: ")
            num2 = float(input("输入第二个数字: "))
            
            if operator == '+':
                result = num1 + num2
            elif operator == '-':
                result = num1 - num2
            elif operator == '*':
                result = num1 * num2
            elif operator == '/':
                result = num1 / num2
            else:
                print("无效运算符")
                continue
                
            print(f"结果: {result}")
            
        except ValueError:
            print("请输入有效的数字！")
        except ZeroDivisionError:
            print("不能除以零！")
            
        another = input("继续计算吗？(y/n): ")
        if another.lower() != 'y':
            break

calculator()

知识点：异常处理、用户交互、基本数学运算

6. 单词频率统计器

from collections import Counter
import re

def word_frequency(text):
    # 使用正则表达式提取单词并转换为小写
    words = re.findall(r'\b\w+\b', text.lower())
    word_counts = Counter(words)
    
    # 按频率排序
    sorted_words = sorted(word_counts.items(), key=lambda x: x[1], reverse=True)
    
    print("单词频率统计:")
    for word, count in sorted_words[:10]:  # 显示前10个高频词
        print(f"{word}: {count}次")

sample_text = """
Python is an interpreted, high-level and general-purpose programming language. 
Python's design philosophy emphasizes code readability with its notable use of significant whitespace.
"""
word_frequency(sample_text)

知识点：正则表达式、集合操作、Counter类、lambda函数

7. 简易待办事项管理器

import json
import os

TODO_FILE = "todo_list.json"

def load_todos():
    if os.path.exists(TODO_FILE):
        with open(TODO_FILE, 'r') as f:
            return json.load(f)
    return []

def save_todos(todos):
    with open(TODO_FILE, 'w') as f:
        json.dump(todos, f)

def todo_manager():
    todos = load_todos()
    
    while True:
        print("\n待办事项管理器")
        print("1. 查看待办事项")
        print("2. 添加待办事项")
        print("3. 标记完成")
        print("4. 删除待办事项")
        print("5. 退出")
        
        choice = input("请选择操作: ")
        
        if choice == '1':
            print("\n当前待办事项:")
            for i, todo in enumerate(todos, 1):
                status = "✓" if todo['completed'] else "✗"
                print(f"{i}. [{status}] {todo['task']}")
                
        elif choice == '2':
            task = input("输入新的待办事项: ")
            todos.append({"task": task, "completed": False})
            save_todos(todos)
            print("已添加!")
            
        elif choice == '3':
            try:
                index = int(input("输入要标记完成的序号: ")) - 1
                todos[index]['completed'] = True
                save_todos(todos)
                print("已标记完成!")
            except (ValueError, IndexError):
                print("无效的序号!")
                
        elif choice == '4':
            try:
                index = int(input("输入要删除的序号: ")) - 1
                del todos[index]
                save_todos(todos)
                print("已删除!")
            except (ValueError, IndexError):
                print("无效的序号!")
                
        elif choice == '5':
            print("再见!")
            break
            
        else:
            print("无效的选择!")

todo_manager()

知识点：文件操作、JSON数据处理、CRUD操作实现

8. 简易聊天机器人

import random

responses = {
    "你好": ["你好！", "嗨！", "很高兴见到你！"],
    "你叫什么名字": ["我是Python聊天机器人", "你可以叫我Bot", "我没有名字，你可以给我取一个"],
    "今天天气怎么样": ["我不知道，你可以查一下天气预报", "看起来不错!", "我建议你出门看看"],
    "再见": ["再见!", "下次见!", "祝你有个美好的一天!"],
    "默认": ["我不太明白你的意思", "能换个说法吗?", "这个我还不会回答"]
}

def chatbot():
    print("聊天机器人已启动! 输入'再见'结束对话")
    
    while True:
        user_input = input("你: ")
        
        if user_input.lower() == "再见":
            print("机器人:", random.choice(responses["再见"]))
            break
            
        response = responses.get(user_input, responses["默认"])
        print("机器人:", random.choice(response))

chatbot()

知识点：字典数据结构、随机选择、简单AI交互

9. 文件加密解密工具

from cryptography.fernet import Fernet

def generate_key():
    return Fernet.generate_key()

def save_key(key, key_file):
    with open(key_file, 'wb') as f:
        f.write(key)

def load_key(key_file):
    return open(key_file, 'rb').read()

def encrypt_file(input_file, output_file, key):
    fernet = Fernet(key)
    
    with open(input_file, 'rb') as f:
        original = f.read()
    
    encrypted = fernet.encrypt(original)
    
    with open(output_file, 'wb') as f:
        f.write(encrypted)

def decrypt_file(input_file, output_file, key):
    fernet = Fernet(key)
    
    with open(input_file, 'rb') as f:
        encrypted = f.read()
    
    decrypted = fernet.decrypt(encrypted)
    
    with open(output_file, 'wb') as f:
        f.write(decrypted)

# 使用示例
key = generate_key()
save_key(key, 'secret.key')

# 加密文件
encrypt_file('test.txt', 'test.encrypted', key)

# 解密文件
decrypt_file('test.encrypted', 'test_decrypted.txt', key)

知识点：加密解密原理、Fernet加密、文件操作

10. 简易股票价格监控

import requests
import time
from datetime import datetime

def stock_monitor(symbol, interval=60):
    api_key = "YOUR_API_KEY"  # 替换为你的API密钥
    base_url = "https://www.alphavantage.co/query"
    
    print(f"开始监控 {symbol} 股票价格...")
    
    while True:
        params = {
            "function": "GLOBAL_QUOTE",
            "symbol": symbol,
            "apikey": api_key
        }
        
        response = requests.get(base_url, params=params)
        data = response.json()
        
        if "Global Quote" in data:
            quote = data["Global Quote"]
            price = quote["05. price"]
            change = quote["09. change"]
            change_percent = quote["10. change percent"]
            
            timestamp = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
            print(f"{timestamp} - {symbol}: ${price} ({change} {change_percent})")
        else:
            print("无法获取股票数据")
        
        time.sleep(interval)

# 使用示例 (需要注册Alpha Vantage获取API密钥)
# stock_monitor("AAPL")  # 监控苹果公司股票

知识点：API调用、JSON数据处理、定时任务

结语
这10个Python脚本涵盖了从基础到进阶的多个知识点，每个脚本都有其独特的实用性和趣味性。通过实践这些脚本，你不仅能巩固Python基础知识，还能学习到许多实用的编程技巧。

最后：
希望你编程学习上不急不躁,按照计划有条不紊推进,把任何一件事做到极致,都是不容易的,加油,努力！相信自己！

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