一：极简版计算器

运行效果：

import tkinter as tk
import tkinter.messagebox
win = tk.Tk()
win.title("计算器")
win.geometry('650x600')b=tk.Label(win, text='计算器',justify=tk.CENTER, height=2 , width=50 ,font=('楷体', 20),background='lightcyan')
b.grid(row=0,columnspan=6)b1=tk.Label(win, text='a:',justify=tk.CENTER, height=2 , width=5 ,font=('楷体', 15))
b1.grid(row=1,column=0)
a1 = tk.Entry(win, justify=tk.LEFT, width=15 , font=('楷体', 15))
a1.grid(row=1,column=1)b2 = tk.Label(win, text='b:',justify=tk.CENTER, height=2 , width=5 , font=('楷体', 15))
b2.grid(row=2,column=0)
a2 = tk.Entry(win, justify=tk.LEFT, width=15 , font=('楷体', 15) )  
a2.grid(row=2,column=1)txt = tk.Text(win,height=20, width=40 ,font=('楷体', 15))
txt.grid(row=1,column=4,rowspan=4,columnspan=4)num=0
def sum():if a1.get()=='' or a2.get()=='':return tkinter.messagebox.showinfo('消息提示', '输入不能为空')global numnum += 1a = float(a1.get())b = float(a2.get())c = a + bs = str('%d'%a + ' + '+'%d'%b + ' = ' + '%d'%c)if num%2==0:s=s+ '\n'print(num)else:s=s+'\t'txt.insert(tk.END,s)tkinter.messagebox.showinfo('消息提示', '求和结果是：%d'%c)a1.delete(0, tk.END)a2.delete(0, tk.END)def multiply():if a1.get()=='' or a2.get()=='':return tkinter.messagebox.showinfo('消息提示', '输入不能为空')global numnum += 1a = float(a1.get())b = float(a2.get())c = a * bs = str('%d' % a + ' * ' + '%d' % b + ' = ' + '%d' % c)if num%2==0:s=s+ '\n'print(num)else:s=s+'\t'txt.insert(tk.END, s)tkinter.messagebox.showinfo('消息提示', '求积结果是：%d'%c)a1.delete(0, tk.END)a2.delete(0, tk.END)
def subtract():if a1.get()=='' or a2.get()=='':return tkinter.messagebox.showinfo('消息提示', '输入不能为空')global numnum += 1a = float(a1.get())b = float(a2.get())c = a - bs = str('%d' % a + ' - ' + '%d' % b + ' = ' + '%d' % c)if num%2==0:s=s+ '\n'print(num)else:s=s+'\t'txt.insert(tk.END, s)tkinter.messagebox.showinfo('消息提示', '求差结果是：%d'%c)a1.delete(0, tk.END)a2.delete(0, tk.END)
def divide():if a1.get()=='' or a2.get()=='':return tkinter.messagebox.showinfo('消息提示', '输入不能为空')global numnum += 1a = float(a1.get())b = float(a2.get())if float(b)==0.0:tkinter.messagebox.showinfo('消息提示', '除数不能为零！！！')a2.delete(0 , tk.END)else:c = a / bs = str('%d' % a + ' / ' + '%d' % b + ' = ' + '%d' % c)if num % 2 == 0:s = s + '\n'print(num)else:s = s + '\t'txt.insert(tk.END, s)tkinter.messagebox.showinfo('消息提示', '求商结果是：%d'%c)a1.delete(0, tk.END)a2.delete(0, tk.END)
a4 = tk.Button(win, text='求和',justify=tk.CENTER, width=10, font=('楷体', 15) ,command = lambda :sum() )
a4.grid(row=3, column=0)
a5 = tk.Button(win, text='求积', justify=tk.CENTER, width=10 , font=('楷体', 15), command = lambda :multiply())
a5.grid(row=3, column=1)
a6 = tk.Button(win, text='求差', justify=tk.CENTER, width=10, font=('楷体', 15), command = lambda :subtract())
a6.grid(row=4, column=0)
a7 = tk.Button(win, text='求商', justify=tk.CENTER, width=10, font=('楷体', 15), command = lambda :divide())
a7.grid(row=4, column=1)
win.mainloop()

二：简易版计算器

运行效果：

import tkinter as tkclass Calculator(tk.Tk):def __init__(self):super().__init__()self.title("Calculator")self.geometry("400x400")self.result_var = tk.StringVar()self.result_var.set("")self.build_ui()def build_ui(self):# 创建输入框entry = tk.Entry(self, textvariable=self.result_var, font=("Arial", 24), bd=10, insertbackground="white", width=14, justify="right")entry.grid(row=0, column=0, columnspan=4)# 创建按钮self.create_button("7", 1, 0)self.create_button("8", 1, 1)self.create_button("9", 1, 2)self.create_button("÷", 1, 3)self.create_button("4", 2, 0)self.create_button("5", 2, 1)self.create_button("6", 2, 2)self.create_button("×", 2, 3)self.create_button("1", 3, 0)self.create_button("2", 3, 1)self.create_button("3", 3, 2)self.create_button("-", 3, 3)self.create_button("C", 4, 0)self.create_button("0", 4, 1)self.create_button("=", 4, 2)self.create_button("+", 4, 3)def create_button(self, text, row, column):button = tk.Button(self, text=text, font=("Arial", 18), width=5, height=2, command=lambda: self.on_button_click(text))button.grid(row=row, column=column)def on_button_click(self, text):if text == "C":self.result_var.set("")elif text == "=":try:result = eval(self.result_var.get().replace("×", "*").replace("÷", "/"))self.result_var.set(result)except Exception as e:self.result_var.set("Error")else:current_value = self.result_var.get()self.result_var.set(current_value + text)if __name__ == "__main__":calculator = Calculator()calculator.mainloop()

三：不简易的计算器

运行效果：

import tkinter as tkclass Calc(tk.Tk):"""计算器窗体类"""def __init__(self):"""初始化实例"""tk.Tk.__init__(self)self.title("计算器")self.memory = 0  # 暂存数值self.create()def create(self):"""创建界面"""btn_list = ["C", "M->", "->M", "/","7", "8", "9", "*","4", "5", "6", "-","1", "2", "3", "+","+/-", "0", ".", "="]r = 1c = 0for b in btn_list:self.button = tk.Button(self, text=b, width=5,command=(lambda x=b: self.click(x)))self.button.grid(row=r, column=c, padx=3, pady=6)c += 1if c > 3:c = 0r += 1self.entry = tk.Entry(self, width=24, borderwidth=2,bg="yellow", font=("Consolas", 12))self.entry.grid(row=0, column=0, columnspan=4, padx=8, pady=6)def click(self, key):"""响应按钮"""if key == "=":  # 输出结果result = eval(self.entry.get())self.entry.insert(tk.END, " = " + str(result))elif key == "C":  # 清空输入框self.entry.delete(0, tk.END)elif key == "->M":  # 存入数值self.memory = self.entry.get()if "=" in self.memory:ix = self.memory.find("=")self.memory = self.memory[ix + 2:]self.title("M=" + self.memory)elif key == "M->":  # 取出数值if self.memory:self.entry.insert(tk.END, self.memory)elif key == "+/-":  # 正负翻转if "=" in self.entry.get():self.entry.delete(0, tk.END)elif self.entry.get()[0] == "-":self.entry.delete(0)else:self.entry.insert(0, "-")else:  # 其他键if "=" in self.entry.get():self.entry.delete(0, tk.END)self.entry.insert(tk.END, key)if __name__ == "__main__":Calc().mainloop()

四：还可以计算器

运行效果：

import tkinter as tkt = ""
color1 = "skyblue"
color2 = "yellow"
color3 = "pink"
color4 = "red"def Add(num):global tt = t + str(num)result.set(t)def Result():try:global ttotal = str(eval(t))result.set(total)t = ""except:result.set(" error ")t = ""def Clear():global tt = ""result.set("")root = tk.Tk()
root.configure(background="black")
root.title("还可以计算器")
sh = root.winfo_screenheight()
sw = root.winfo_screenwidth()
h = 150
w = 295
x = (sw - w) // 2
y = (sh - h) // 2
root.geometry('%dx%d+%d+%d' % (w, h, x, y))result = tk.StringVar()entrys = tk.Entry(root, textvariable=result, width=22)
entrys.grid(columnspan=4, ipadx=70)button1 = tk.Button(root, text=' 1 ', bg=color1, command=lambda: Add(1), height=1, width=7)
button1.grid(row=2, column=0)
button2 = tk.Button(root, text=' 2 ', bg=color1, command=lambda: Add(2), height=1, width=7)
button2.grid(row=2, column=1)
button3 = tk.Button(root, text=' 3 ', bg=color1, command=lambda: Add(3), height=1, width=7)
button3.grid(row=2, column=2)
button4 = tk.Button(root, text=' 4 ', bg=color1, command=lambda: Add(4), height=1, width=7)
button4.grid(row=3, column=0)
button5 = tk.Button(root, text=' 5 ', bg=color1, command=lambda: Add(5), height=1, width=7)
button5.grid(row=3, column=1)
button6 = tk.Button(root, text=' 6 ', bg=color1, command=lambda: Add(6), height=1, width=7)
button6.grid(row=3, column=2)
button7 = tk.Button(root, text=' 7 ', bg=color1, command=lambda: Add(7), height=1, width=7)
button7.grid(row=4, column=0)
button8 = tk.Button(root, text=' 8 ', bg=color1, command=lambda: Add(8), height=1, width=7)
button8.grid(row=4, column=1)
button9 = tk.Button(root, text=' 9 ', bg=color1, command=lambda: Add(9), height=1, width=7)
button9.grid(row=4, column=2)
button0 = tk.Button(root, text=' 0 ', bg=color1, command=lambda: Add(0), height=1, width=7)
button0.grid(row=5, column=0)add = tk.Button(root, text=' + ', bg=color2, command=lambda: Add("+"), height=1, width=7)
add.grid(row=2, column=3)
subtract = tk.Button(root, text=' - ', bg=color2, command=lambda: Add("-"), height=1, width=7)
subtract.grid(row=3, column=3)
multiply = tk.Button(root, text=' * ', bg=color2, command=lambda: Add("*"), height=1, width=7)
multiply.grid(row=4, column=3)
divide = tk.Button(root, text=' / ', bg=color2, command=lambda: Add("/"), height=1, width=7)
divide.grid(row=5, column=3)equal = tk.Button(root, text=' = ', bg=color3, command=Result, height=1, width=7)
equal.grid(row=5, column=2)
clear = tk.Button(root, text='Clear', bg=color4, command=Clear, height=1, width=7)
clear.grid(row=5, column=1)root.mainloop()