电表及销售统计Python应用及win程序

暑假每天都要填表算账很烦躁，就整了个小程序来减轻压力

程序可以做到记录输入的每一条数据，并用新数据减去旧数据算新增的量，同时记录填写时间

Python代码

import json
import os  # 导入os模块
from datetime import datetime
from tkinter import *
from tkinter import messagebox
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
from matplotlib.figure import Figure
import matplotlib.pyplot as plt
# 初始化数据文件（如果文件不存在，则创建空字典）
def init_data_file(filename):if not os.path.exists(filename):with open(filename, 'w') as file:json.dump({}, file)# 读取数据def read_data(filename):with open(filename, 'r') as file:return json.load(file)# 更新数据def update_data(filename, data_name, new_value):data = read_data(filename)current_time = datetime.now().strftime("%Y-%m-%d %H:%M:%S")if data_name not in data:data[data_name] = [{"time": current_time, "value": new_value, "difference": 0}]else:last_record = data[data_name][-1]last_value = last_record["value"]difference = new_value - last_valuedata[data_name].append({"time": current_time,"value": new_value,"difference": difference})with open(filename, 'w') as file:json.dump(data, file, indent=4)# 主程序# GUI主窗口
class DataApp:def __init__(self, master):self.master = masterself.master.title("数据记录器")self.filename = 'data_records.json'self.init_data_file()# 创建输入框和按钮Label(master, text="数据名称:").grid(row=0)self.data_name_entry = Entry(master)self.data_name_entry.grid(row=0, column=1)Label(master, text="数据值:").grid(row=1)self.data_value_entry = Entry(master)self.data_value_entry.grid(row=1, column=1)self.update_button = Button(master, text="更新数据", command=self.update_data_gui)self.update_button.grid(row=2, column=1)self.analyze_button = Button(master, text="分析数据", command=self.analyze_data)self.analyze_button.grid(row=3, column=1)self.clear_button = Button(master, text="清空数据库", command=self.clear_data)self.clear_button.grid(row=6, column=1)self.quit_button = Button(master, text="退出", command=master.quit)self.quit_button.grid(row=4, column=1)# 图表区域self.figure = Figure(figsize=(6, 4), dpi=100)self.ax = self.figure.add_subplot(111)self.canvas = FigureCanvasTkAgg(self.figure, master=master)self.canvas.get_tk_widget().grid(row=0, column=2, rowspan=5)self.quit_button = Button(master, text="图表退出", command=master.quit)self.quit_button.grid(row=5, column=1)# 数据清空功能def clear_data(self):confirm = messagebox.askyesno("警告", "您确定要清空所有数据吗？此操作不可逆！")if confirm:with open(self.filename, 'w') as file:json.dump({}, file)messagebox.showinfo("成功", "数据已清空。")else:messagebox.showinfo("取消", "数据清空操作已取消。")# 初始化数据文件def init_data_file(self):if not os.path.exists(self.filename):with open(self.filename, 'w') as file:json.dump({}, file)# GUI版本的更新数据函数def update_data_gui(self):data_name = self.data_name_entry.get()try:new_value = float(self.data_value_entry.get())update_data(self.filename, data_name, new_value)messagebox.showinfo("成功", f"数据 {data_name} 已更新，并记录了差值和时间。")except ValueError:messagebox.showerror("错误", "请输入有效的数字！")
# 数据分析图表函数def analyze_data(self):data_name = self.data_name_entry.get()data = read_data(self.filename)if data_name in data:times = [record["time"] for record in data[data_name]]values = [record["value"] for record in data[data_name]]differences = [record["difference"] for record in data[data_name]]self.ax.clear()self.ax.plot(times, values, label='Values', marker='o')  # 添加marker样式以便更清晰地看到点self.ax.plot(times, differences, label='Differences', marker='x')# 在每个点旁边添加数值标签for i, txt in enumerate(values):self.ax.text(times[i], values[i], f'{txt:.2f}', ha='center', va='bottom')for i, txt in enumerate(differences):self.ax.text(times[i], differences[i], f'{txt:.2f}', ha='center', va='top')self.ax.legend()self.ax.set_title(f"{data_name} Analysis")self.canvas.draw()else:messagebox.showerror("错误", f"数据名称 {data_name} 未找到！")if __name__ == "__main__":root = Tk()app = DataApp(root)root.mainloop()

Python运行结果