【K12】运用TK控件，制作I=U/R计算电流的代码

根据欧姆定律，制作I=U/R计算电流的代码

import tkinter as tk
from tkinter import ttk
import matplotlib.pyplot as plt
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
import matplotlib as mpl
# 设置全局字体
plt.rcParams['font.family'] = 'SimHei'

class App:
    def __init__(self, root):
        self.root = root
        self.resistance_value = tk.StringVar()
        self.voltage = 10.0  # 假设电压为10V



        # 创建文本输入框
        self.entry = ttk.Entry(root, textvariable=self.resistance_value)
        self.entry.grid(row=0,column=1)
        self.entry.bind('<Return>', self.update_light_bulb)  # 绑定回车键事件

        # 创建用于显示灯泡亮度变化的图表
        self.figure, self.ax = plt.subplots(figsize=(5, 4), dpi=100)
        self.canvas = FigureCanvasTkAgg(self.figure, self.root)