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50. 压缩文件：

import zipfile``   ``with zipfile.ZipFile("file.zip", "r") as zip_ref:`    `zip_ref.extractall("extracted")

51. 数据库操作：

import sqlite3``   ``   ``conn = sqlite3.connect("my_database.db")``cursor = conn.cursor()``cursor.execute("CREATE TABLE IF NOT EXISTS users (id INTEGER PRIMARY KEY, name TEXT)")``conn.commit()``conn.close()

52. 网络请求：

import requests``   ``   ``response = requests.get("https://www.example.com")

53. 多线程：

import threading``   ``   ``def my_thread():`    `print("Thread running")``   ``   ``thread = threading.Thread(target=my_thread)``thread.start()``thread.join()

54. 多进程：

import multiprocessing``   ``   ``def my_process():`    `print("Process running")``   ``   ``process = multiprocessing.Process(target=my_process)``process.start()``process.join()

55. 进程池：

from multiprocessing import Pool``   ``   ``def my_function(x):`    `return x*x``   ``   ``with Pool(5) as p:`    `print(p.map(my_function, [1, 2, 3]))

56. 队列：

from queue import Queue``   ``   ``q = Queue()``q.put(1)``q.put(2)``q.get()

57. 协程：

import asyncio``   ``   ``async def my_coroutine():`    `await asyncio.sleep(1)`    `print("Coroutine running")``   ``   ``asyncio.run(my_coroutine())

58. 异步IO：

import aiohttp``import asyncio``   ``   ``async def fetch(url):`    `async with aiohttp.ClientSession() as session:`        `async with session.get(url) as response:`            `return await response.text()``   ``   ``loop = asyncio.get_event_loop()``loop.run_until_complete(fetch("https://www.example.com"))

59. 信号处理：

import signal``   ``   ``def handler(signum, frame):`    `print("Signal handler called with signal", signum)``   ``   ``signal.signal(signal.SIGINT, handler)

60. 装饰器的实现：

def my_decorator(func):`    `def wrapper(*args, **kwargs):`        `print("Before function call")`        `result = func(*args, **kwargs)`        `print("After function call")`        `return result`    `return wrapper

61. 基于类的装饰器：

class MyDecorator:`    `def __init__(self, func):`        `self.func = func``   ``   `    `def __call__(self, *args, **kwargs):`        `print("Before function call")`        `result = self.func(*args, **kwargs)`        `print("After function call")`        `return result

62. 模块和包的导入：

from my_package import my_module

63. 相对导入：

from .my_module import my_function

64. 集合操作：

set1 = {1, 2, 3}``set2 = {2, 3, 4}``set1 & set2  # 交集``set1 | set2  # 并集``set1 - set2  # 差集

65. 集合方法：

my_set.add(5)``my_set.remove(5)

66. 字典方法：

my_dict.keys()``my_dict.values()``my_dict.items()

67. 对象方法：

class MyClass:`    `def method(self):`        `pass``   ``   ``obj = MyClass()``obj.method()

68. 类方法：

class MyClass:`    `@classmethod`    `def method(cls):`        `pass

69. 静态方法：

class MyClass:`    `@staticmethod`    `def method():`        `pass

70. 上下文管理器的实现：

class MyContextManager:`    `def __enter__(self):`        `pass``   ``   `    `def __exit__(self, exc_type, exc_val, exc_tb):`        `pass``   ``   ``with MyContextManager():`    `pass

71. 元类：

class MyMeta(type):`    `def __new__(cls, name, bases, dct):`        `return super().__new__(cls, name, bases, dct)

72. 装饰器链：

@decorator1``@decorator2``def my_function():`    `pass

73. 属性的getter和setter：

class MyClass:`    `def __init__(self, value):`        `self._value = value``   ``   `    `@property`    `def value(self):`        `return self._value``   ``   `    `@value.setter`    `def value(self, new_value):`        `self._value = new_value

74. 文件操作：

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

75. with语句：

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

76. yield语句：

def my_generator():`    `yield 1`    `yield 2`    `yield 3

77. 生成器表达式：

gen = (x**2 for x in range(10))

78. 列表方法：

my_list.append(5)``my_list.remove(5)

79. 元组解包：

a, b, c = (1, 2, 3)

80. 字典解包：

def my_function(a, b, c):`    `pass``   ``   ``my_dict = {'a': 1, 'b': 2, 'c': 3}``my_function(**my_dict)

81. 循环中断：

for i in range(10):`    `if i == 5:`        `break

82. 循环跳过：

for i in range(10):`    `if i == 5:`        `continue

83. 异步编程：

import asyncio``   ``   ``async def my_coroutine():`    `await asyncio.sleep(1)``   ``   ``asyncio.run(my_coroutine())

84. 类型检查：

isinstance(5, int)

85. 序列化和反序列化：

import pickle``   ``   ``data = {"name": "John", "age": 30}``with open("data.pkl", "wb") as file:`    `pickle.dump(data, file)``   ``   ``with open("data.pkl", "rb") as file:`    `data = pickle.load(file)

86. 文件读取模式：

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

87. 文件写入模式：

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

88. 上下文管理器：

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

89. 命令行参数解析：

import argparse``   ``   ``parser = argparse.ArgumentParser(description="My program")``parser.add_argument("name", type=str, help="Your name")``args = parser.parse_args()

90. 模块导入：

import my_module

91. 包导入：

from my_package import my_module

92. 包的相对导入：

from .my_module import my_function

93. 动态属性：

class MyClass:`    `def __init__(self):`        `self.dynamic_attr = "I am dynamic"

94. 动态方法：

def dynamic_method(self):`    `return "I am dynamic"``   ``   ``MyClass.dynamic_method = dynamic_method

95. 类的单例模式：

class Singleton:`    `_instance = None

96. 类的工厂模式：

class Factory:`    `def create(self, type):`        `if type == "A":`            `return A()`        `elif type == "B":`            `return B()

97. 依赖注入：

class Service:`    `def __init__(self, dependency):`        `self.dependency = dependency

98. 抽象类：

from abc import ABC, abstractmethod``   ``   ``class AbstractClass(ABC):`    `@abstractmethod`    `def my_method(self):`        `pass

99. 接口：

from abc import ABC, abstractmethod``class Interface(ABC):`    `@abstractmethod`    `def method(self):`        `pass

这些知识点涵盖了Python编程的基本语法和常用功能。希望对你有帮助！

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