python小项目编程-初级（5、词频统计，6、简单得闹钟）

1、词频统计

统计文本文件中每个单词出现的频率。

实现

import tkinter as tk
from tkinter import filedialog, messagebox
from collections import Counter
import reclass WordFrequencyCounter:def __init__(self, master):self.master = masterself.master.title("词频统计")self.label = tk.Label(master, text="选择一个文本文件进行词频统计")self.label.pack(pady=10)self.select_button = tk.Button(master, text="选择文件", command=self.select_file)self.select_button.pack(pady=5)self.result_text = tk.Text(master, width=50, height=20)self.result_text.pack(pady=10)def select_file(self):"""选择文件并统计单词频率"""file_path = filedialog.askopenfilename(filetypes=[("Text files", "*.txt")])if file_path:try:self.count_words(file_path)except Exception as e:messagebox.showerror("错误", f"读取文件时出错: {e}")def count_words(self, file_path):"""统计单词频率并显示结果"""with open(file_path, 'r', encoding='utf-8') as file:text = file.read()# 统计单词频率words = re.findall(r'\b\w+\b', text.lower())  # 使用正则表达式提取单词并转换为小写word_count = Counter(words)  # 统计单词频率self.display_results(word_count)return word_count #为了UT 写了returndef display_results(self, word_count):"""显示单词频率结果"""self.result_text.delete(1.0, tk.END)  # 清空文本框for word, count in word_count.items():self.result_text.insert(tk.END, f"{word}: {count}\n")  # 打印每个单词及其频率if __name__ == "__main__":root = tk.Tk()app = WordFrequencyCounter(root)root.mainloop()

测试

unittest

import unittest
from collections import Counter
from word_frequency_counter import WordFrequencyCounter  # 假设你的类在这个文件中
import tkinter as tkclass TestWordFrequencyCounter(unittest.TestCase):def setUp(self):"""创建一个 Tkinter 窗口以便测试"""self.root = tk.Tk()self.app = WordFrequencyCounter(self.root)self.test_file_path = 'test_sample.txt'with open(self.test_file_path, 'w', encoding='utf-8') as f:f.write("Hello world! Hello Python. Hello, hello world.")def tearDown(self):"""销毁 Tkinter 窗口"""self.root.destroy()def test_count_words(self):"""测试单词计数功能"""expected_count = Counter({'hello': 4, 'world': 2, 'python': 1})# 使用私有方法进行测试word_count = self.app.count_words(self.test_file_path)self.assertEqual(word_count, expected_count)def test_display_results(self):"""测试结果显示功能"""test_count = Counter({'hello': 4, 'world': 1})self.app.display_results(test_count)# 检查文本框内容expected_output = "hello: 4\nworld: 1\n"self.assertEqual(self.app.result_text.get(1.0, tk.END).strip(), expected_output.strip())if __name__ == "__main__":unittest.main()

pytest

import pytest
from collections import Counter
from word_frequency_counter import WordFrequencyCounter  # 假设你的类在这个文件中
import tkinter as [e-mail]
def app():"""创建一个 Tkinter 窗口以便测试"""root = tk.Tk()app = WordFrequencyCounter(root)app.test_file_path = 'test_sample.txt'with open(app.test_file_path, 'w', encoding='utf-8') as f:f.write("Hello world! Hello Python. Hello, hello world.")yield approot.destroy()def test_count_words(app):"""测试单词计数功能"""expected_count = Counter({'hello': 4, 'world': 2, 'python': 1})# 使用私有方法进行测试word_count = app.count_words(app.test_file_path)assert word_count == expected_countdef test_display_results(app):"""测试结果显示功能"""test_count = Counter({'hello': 4, 'world': 1})app.display_results(test_count)# 检查文本框内容expected_output = "hello: 4\nworld: 1\n"assert app.result_text.get(1.0, tk.END).strip() == expected_output.strip()

2、简单的闹钟

设置一个简单的闹钟，指定时间后播放提示音。

实现

import tkinter as tk
from tkinter import messagebox
from datetime import datetime
import winsound  # Windows平台播放声音
import threading
import timeclass AlarmClock:def __init__(self, root):self.root = rootself.root.title("闹铃")self.alarms = []# GUI Componentsself.label = tk.Label(root, text="设置时间 (HH:MM):")self.label.pack(pady=10)self.entry = tk.Entry(root)self.entry.pack(pady=10)self.event_label = tk.Label(root, text="事件描述:")self.event_label.pack(pady=10)self.event_entry = tk.Entry(root)self.event_entry.pack(pady=10)self.add_button = tk.Button(root, text="添加闹铃", command=self.add_alarm)self.add_button.pack(pady=10)self.alarm_listbox = tk.Listbox(root)self.alarm_listbox.pack(pady=10)self.remove_button = tk.Button(root, text="删除闹铃", command=self.remove_alarm)self.remove_button.pack(pady=10)# Start alarm checking in a separate threadself.check_alarms_thread = threading.Thread(target=self.check_alarms, daemon=True)self.check_alarms_thread.start()def add_alarm(self):time_str = self.entry.get()event = self.event_entry.get()try:# Validate time formatdatetime.strptime(time_str, "%H:%M")self.alarms.append((time_str, event))self.alarm_listbox.insert(tk.END, f"{time_str} - {event}")self.entry.delete(0, tk.END)self.event_entry.delete(0, tk.END)except ValueError:messagebox.showerror("无效得时间", "Please enter time in HH:MM format.")def remove_alarm(self):selected = self.alarm_listbox.curselection()if selected:self.alarm_listbox.delete(selected)self.alarms.pop(selected[0])def check_alarms(self):while True:current_time = datetime.now().strftime("%H:%M")for alarm in self.alarms:if alarm[0] == current_time:winsound.Beep(1000, 2000)  # 1000Hz, 1秒messagebox.showinfo("Alarm", f"Time for: {alarm[1]}")self.alarms.remove(alarm)self.alarm_listbox.delete(0)time.sleep(30)  # Check every 30 secondsif __name__ == "__main__":root = tk.Tk()app = AlarmClock(root)root.mainloop()

测试：

unittest

import unittest
from datetime import datetime
from unittest.mock import patch
from AlarmClock import AlarmClock
import tkinter as tkclass TestAlarmClock(unittest.TestCase):def setUp(self):self.root = tk.Tk()self.app = AlarmClock(self.root)def test_add_alarm_valid(self):self.app.entry.insert(0, "12:30")self.app.event_entry.insert(0, "Meeting")self.app.add_alarm()self.assertEqual(len(self.app.alarms), 1)self.assertEqual(self.app.alarms[0], ("12:30", "Meeting"))def test_add_alarm_invalid(self):self.app.entry.insert(0, "25:00")self.app.event_entry.insert(0, "Invalid Time")self.app.add_alarm()self.assertEqual(len(self.app.alarms), 0)def test_remove_alarm(self):self.app.entry.insert(0, "12:30")self.app.event_entry.insert(0, "Meeting")self.app.add_alarm()self.app.alarm_listbox.select_set(0)self.app.remove_alarm()self.assertEqual(len(self.app.alarms), 0)def tearDown(self):self.root.destroy()if __name__ == "__main__":unittest.main()

pytest

import pytest
from datetime import datetime
from unittest.mock import patch
from AlarmClock import AlarmClock
import tkinter as [e-mail]
def app():root = tk.Tk()app = AlarmClock(root)yield approot.destroy()def test_add_alarm_valid(app):app.entry.insert(0, "12:30")app.event_entry.insert(0, "Meeting")app.add_alarm()assert len(app.alarms) == 1assert app.alarms[0] == ("12:30", "Meeting")def test_add_alarm_invalid(app):app.entry.insert(0, "25:00")app.event_entry.insert(0, "Invalid Time")app.add_alarm()assert len(app.alarms) == 0def test_remove_alarm(app):app.entry.insert(0, "12:30")app.event_entry.insert(0, "Meeting")app.add_alarm()app.alarm_listbox.select_set(0)app.remove_alarm()assert len(app.alarms) == 0