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 re class WordFrequencyCounter: def __init__(self, master): self.master = master self.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return def 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 tk class 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 tk @pytest.fixture 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 app root.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_count def 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 time class AlarmClock: def __init__(self, root): self.root = root self.root.title("闹铃") self.alarms = [] # GUI Components self.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 thread self.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 format datetime.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 seconds if __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 tk class 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 tk @pytest.fixture def app(): root = tk.Tk() app = AlarmClock(root) yield app root.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) == 1 assert 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) == 0 def 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