五个有趣的Python脚本

Python可以玩的方向有很多，比如爬虫、预测分析、GUI、自动化、图像处理、可视化等等，可能只需要十几行代码就能实现酷炫的功能。

因为Python是动态脚本语言，所以代码逻辑比Java要简要很多，实现同样的功能少写很多代码。而且Python生态有众多的第三方工具库，把功能都封装在包里，只需要你调用接口，就能使用复杂的功能。

下面举几个简单好玩的脚本例子，初学者可以照着代码写写，能快速掌握python语法。

1、使用PIL、Matplotlib、Numpy对模糊老照片进行修复

import numpy as np import matplotlib.pyplot as plt from PIL import Image import os.path img_path = "E:\\test.jpg" img = Image.open(img_path) img = np.asarray(img) flat = img.flatten() def get_histogram(image, bins): histogram = np.zeros(bins) for pixel in image: histogram[pixel] += 1 return histogram hist = get_histogram(flat, 256) cs = np.cumsum(hist) nj = (cs - cs.min()) * 255 N = cs.max() - cs.min() cs = nj / N cs = cs.astype('uint8') img_new = cs[flat] img_new = np.reshape(img_new, img.shape) fig = plt.figure() fig.set_figheight(15) fig.set_figwidth(15) fig.add_subplot(1, 2, 1) plt.imshow(img, cmap='gray') plt.title("Image 'Before' Contrast Adjustment") fig.add_subplot(1, 2, 2) plt.imshow(img_new, cmap='gray') plt.title("Image 'After' Contrast Adjustment") filename = os.path.basename(img_path) plt.show()

2、将文件批量压缩，使用zipfile库

import os import zipfile from random import randrange def zip_dir(path, zip_handler): for root, dirs, files in os.walk(path): for file in files: zip_handler.write(os.path.join(root, file)) if __name__ == '__main__': to_zip = input(""" Enter the name of the folder you want to zip (N.B.: The folder name should not contain blank spaces) > """) to_zip = to_zip.strip() + "/" zip_file_name = f'zip{randrange(0,10000)}.zip' zip_file = zipfile.ZipFile(zip_file_name, 'w', zipfile.ZIP_DEFLATED) zip_dir(to_zip, zip_file) zip_file.close() print(f'File Saved as {zip_file_name}')

3、使用tkinter制作计算器GUI

tkinter是python自带的GUI库，适合初学者练手创建小软件

import tkinter as tk root = tk.Tk() root.title("Standard Calculator") root.resizable(0, 0) e = tk.Entry(root, width=35, bg='#f0ffff', fg='black', borderwidth=5, justify='right', font='Calibri 15') e.grid(row=0, column=0, columnspan=3, padx=12, pady=12) def buttonClick(num): temp = e.get(
    ) e.delete(0, tk.END) e.insert(0, temp + num) def buttonClear(): e.delete(0, tk.END)

4、PDF转换为Word文件

使用pdf2docx库，可以将PDF文件转为Word格式

from pdf2docx import Converter import os import sys pdf = input("Enter the path to your file: ") assert os.path.exists(pdf), "File not found at, "+str(pdf) f = open(pdf,'r+') doc_name_choice = input("Do you want to give a custom name to your file ?(Y/N)") if(doc_name_choice == 'Y' or doc_name_choice == 'y'): doc_name = input("Enter the custom name : ")+".docx" else: pdf_name = os.path.basename(pdf) doc_name = os.path.splitext(pdf_name)[0] + ".docx" cv = Converter(pdf) path = os.path.dirname(pdf) cv.convert(os.path.join(path, "", doc_name) , start=0, end=None) print("Word doc created!") cv.close()

5、Python自动发送邮件

使用smtplib和email库可以实现脚本发送邮件。

import smtplib import email from email.mime.text import MIMEText from email.mime.image import MIMEImage from email.mime.multipart import MIMEMultipart from email.header import Header mail_host = "smtp.163.com" mail_sender = "******@163.com" mail_license = "********" mail_receivers = ["******@qq.com","******@outlook.com"] mm = MIMEMultipart('related') subject_content = """Python邮件测试""" mm["From"] = "sender_name<******@163.com>" mm["To"] = "receiver_1_name<******@qq.com>,receiver_2_name<******@outlook.com>" mm["Subject"] = Header(subject_content,'utf-8') body_content = """你好，这是一个测试邮件！""" message_text = MIMEText(body_content,"plain","utf-8") mm.attach(message_text) image_data = open('a.jpg','rb') message_image = MIMEImage(image_data.read()) image_data.close() mm.attach(message_image) atta = MIMEText(open('sample.xlsx', 'rb').read(), 'base64', 'utf-8') atta["Content-Disposition"] = 'attachment; filename="sample.xlsx"' mm.attach(atta) stp = smtplib.SMTP() stp.connect(mail_host, 25) stp.set_debuglevel(1) stp.login(mail_sender,mail_license) stp.sendmail(mail_sender, mail_receivers, mm.as_string()) print("邮件发送成功") stp.quit()

小结

Python还有很多好玩的小脚本，你可以根据自己的场景来编写，也可以使用现成的第三方库。

原文地址:https://mp.weixin.qq.com/s?__biz=MzA3ODYwNDkzOQ==&mid=2659073659&idx=1&sn=91f3c50357a220a6933bfd4177a10647&chksm=84caa19fb3bd28896e86ed775b388bd1fb2a7c7d3d3645cdda0297386a5e78efcad48dfce36a