本篇较难,建议优先学习上篇 ;20个硬核Python脚本-CSDN博客
接上篇文章,对于Pyhon的学习,上篇学习的结束相信大家对于Pyhon有了一定的理解和经验,学习完上篇文章之后再研究研究剩下的30个脚本你将会有所成就!加油!
目录
21、数据库连接 - SQLite
22、图像处理 - Pillow
23、图形界面 - Tkinter
24、文本生成 - Faker
25、加密和解密 - cryptography
26、Socket编程
27、并发编程 - threading
28、正则表达式 - re
29、REST API - FastAPI
30、数据库连接 - SQLAlchemy
31、文本处理 - NLTK
32、命令行应用 - argparse
33、微服务 - Flask-RESTful
34、数据处理 - BeautifulSoup
35、加密 - hashlib
36、数据序列化 - Pickle
37、并行处理 - concurrent.futures
38、网络爬虫 - Scrapy
39、异步编程 - asyncio
40、数据分析 - Numpy
41、数据处理 - Pandas
42、数据可视化 - Matplotlib
43、机器学习 - Scikit-Learn
44、机器学习 - Keras
45、图像处理 - OpenCV
46、数据爬取 - Scrapy
47、数据分析 - Seaborn
48、数据可视化 - Plotly
49、自然语言处理 - spaCy
50、机器学习 - XGBoost
21、数据库连接 - SQLite
import sqlite3 conn = sqlite3.connect('mydatabase.db') cursor = conn.cursor() cursor.execute('CREATE TABLE IF NOT EXISTS users (id INTEGER PRIMARY KEY, name TEXT)') conn.commit() conn.close()
官方文档: https://www.sqlite.org/docs.html
22、图像处理 - Pillow
from PIL import Image img = Image.open('example.jpg') img.show()
官方文档: https://pillow.readthedocs.io/en/stable/index.html
23、图形界面 - Tkinter
import tkinter as tk root = tk.Tk() label = tk.Label(root, text="Hello, GUI!") label.pack() root.mainloop()
官方文档: https://docs.python.org/3/library/tkinter.html
24、文本生成 - Faker
from faker import Faker fake = Faker() print(fake.name())
官方文档: https://faker.readthedocs.io/en/master/
25、加密和解密 - cryptography
from cryptography.fernet import Fernet key = Fernet.generate_key() cipher_suite = Fernet(key) text = "Secret message".encode() cipher_text = cipher_suite.encrypt(text) print(cipher_text)
官方文档: https://cryptography.io/en/latest/
26、Socket编程
import socket server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM) server_socket.bind(('127.0.0.1', 12345)) server_socket.listen(5) print("Server is listening...") while True: client_socket, addr = server_socket.accept() print(f"Connection from {addr}") client_socket.send(b"Hello, client!") client_socket.close()
官方文档: https://docs.python.org/3/library/socket.html
27、并发编程 - threading
import threading def print _numbers(): for i in range(1, 6): print(f"Number: {i}") def print_letters(): for letter in "abcde": print(f"Letter: {letter}") thread1 = threading.Thread(target=print_numbers) thread2 = threading.Thread(target=print_letters) thread1.start() thread2.start()
官方文档: https://docs.python.org/3/library/threading.html
28、正则表达式 - re
import re text = "My phone number is 123-456-7890." pattern = r'\d{3}-\d{3}-\d{4}' match = re.search(pattern, text) if match: print(f"Phone number found: {match.group()}")
官方文档: https://docs.python.org/3/howto/regex.html
29、REST API - FastAPI
from fastapi import FastAPI app = FastAPI() @app.get("/items/{item_id}") def read_item(item_id: int, query_param: str = None): return {"item_id": item_id, "query_param": query_param}
官方文档: https://fastapi.tiangolo.com/
30、数据库连接 - SQLAlchemy
from sqlalchemy import create_engine, Column, Integer, String from sqlalchemy.orm import sessionmaker from sqlalchemy.ext.declarative import declarative_base engine = create_engine('sqlite:///mydatabase.db') Base = declarative_base() class User(Base): __tablename__ = 'users' id = Column(Integer, primary_key=True) name = Column(String) Session = sessionmaker(bind=engine) session = Session()
官方文档: https://docs.sqlalchemy.org/en/20/
31、文本处理 - NLTK
import nltk nltk.download('punkt') from nltk.tokenize import word_tokenize text = "This is a sample sentence." tokens = word_tokenize(text) print(tokens)
官方文档: https://www.nltk.org/
32、命令行应用 - argparse
import argparse parser = argparse.ArgumentParser(description='A simple command-line app') parser.add_argument('--name', type=str, help='Your name') args = parser.parse_args() print(f'Hello, {args.name}!')
官方文档: https://docs.python.org/3/library/argparse.html
33、微服务 - Flask-RESTful
from flask import Flask from flask_restful import Resource, Api app = Flask(__name) api = Api(app) class HelloWorld(Resource): def get(self): return {'message': 'Hello, World!'} api.add_resource(HelloWorld, '/')
官方文档: https://flask-restful.readthedocs.io/en/latest/
34、数据处理 - BeautifulSoup
from bs4 import BeautifulSoup import requests url = "https://www.example.com" response = requests.get(url) soup = BeautifulSoup(response.text, "html.parser") print(soup.title.text)
官方文档: https://www.crummy.com/software/BeautifulSoup/bs4/doc/
35、加密 - hashlib
import hashlib text = "Secret Password" hash_object = hashlib.sha256(text.encode()) hash_hex = hash_object.hexdigest() print(hash_hex)
官方文档: https://docs.python.org/3/library/hashlib.html
36、数据序列化 - Pickle
import pickle data = {'name': 'Alice', 'age': 30} with open('data.pkl', 'wb') as file: pickle.dump(data, file) with open('data.pkl', 'rb') as file: loaded_data = pickle.load(file) print(loaded_data)
官方文档: https://docs.python.org/3/library/pickle.html
37、并行处理 - concurrent.futures
import concurrent.futures def square(x): return x * x with concurrent.futures.ThreadPoolExecutor() as executor: results = executor.map(square, [1, 2, 3, 4, 5]) for result in results: print(result)
官方文档: https://docs.python.org/3/library/concurrent.futures.html
38、网络爬虫 - Scrapy
import scrapy class MySpider(scrapy.Spider): name = 'example.com' start_urls = ['https://www.example.com'] def parse(self, response): # 爬取和处理数据 pass
官方文档: https://docs.scrapy.org/en/latest/
39、异步编程 - asyncio
import asyncio async def hello(): await asyncio.sleep(1) print("Hello, Async!") loop = asyncio.get_event_loop() loop.run_until_complete(hello())
官方文档: https://docs.python.org/3/library/asyncio.html
40、数据分析 - Numpy
import numpy as np arr = np.array([1, 2, 3, 4, 5]) print(arr.mean())
官方文档: https://numpy.org/doc/stable/
41、数据处理 - Pandas
import pandas as pd data = {'Name': ['Alice', 'Bob', 'Charlie'], 'Age': [25, 30, 35]} df = pd.DataFrame(data) print(df)
官方文档: https://pandas.pydata.org/docs/
42、数据可视化 - Matplotlib
import matplotlib.pyplot as plt x = [1, 2, 3, 4, 5] y = [10, 15, 13, 18, 20] plt.plot(x, y) plt.show()
官方文档: https://matplotlib.org/stable/contents.html
43、机器学习 - Scikit-Learn
from sklearn.datasets import load_iris from sklearn.model_selection import train_test_split from sklearn.ensemble import RandomForestClassifier iris = load_iris() X_train, X_test, y_train, y_test = train_test_split(iris.data, iris.target, test_size=0.2) clf = RandomForestClassifier(n_estimators=100) clf.fit(X_train, y_train)
官方文档: https://scikit-learn.org/stable/documentation.html
44、机器学习 - Keras
from keras.models import Sequential from keras.layers import Dense model = Sequential() model.add(Dense(units=64, activation='relu', input_dim=100)) model.add(Dense(units=10, activation='softmax'))
官方文档: https://keras.io/guides/
45、图像处理 - OpenCV
import cv2 image = cv2.imread('image.jpg') cv2.imshow('Image', image) cv2.waitKey(0) cv2.destroyAllWindows()
官方文档: https://docs.opencv.org/master/index.html
46、数据爬取 - Scrapy
import scrapy class MySpider(scrapy.Spider): name = 'example.com' start_urls = ['https://www.example.com'] def parse(self, response): # 爬取和处理数据 pass
47、数据分析 - Seaborn
import seaborn as sns import matplotlib.pyplot as plt data = sns.load_dataset("iris") sns.pairplot(data, hue="species") plt.show()
官方文档: https://seaborn.pydata.org/introduction.html
48、数据可视化 - Plotly
import plotly.express as px fig = px.scatter(x=[1, 2, 3, 4], y=[10, 11, 12, 13]) fig.show()
官方文档: https://plotly.com/python/
49、自然语言处理 - spaCy
import spacy nlp = spacy.load('en_core_web_sm') doc = nlp("This is a sample sentence.") for token in doc: print(token.text, token.pos_)
官方文档: https://spacy.io/usage/spacy-101
50、机器学习 - XGBoost
import xgboost as xgb data = xgb.DMatrix('train.csv') param = {'max_depth': 3, 'eta': 0.1, 'objective': 'reg:squarederror'} model = xgb.train(param, data, 10)
官方文档: https://xgboost.readthedocs.io/en/latest/
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