Python - 各种计算器合集【附源码】

计算器合集

- - 一：极简版计算器
  - 二：简易版计算器
  - 三：不简易的计算器
  - 四：还可以计算器

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 num
    num += 1
    a = float(a1.get())
    b = float(a2.get())
    c = a + b
    s = 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 num
    num += 1
    a = float(a1.get())
    b = float(a2.get())
    c = a * b
    s = 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 num
    num += 1
    a = float(a1.get())
    b = float(a2.get())
    c = a - b
    s = 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 num
    num += 1
    a = 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 / b
        s = 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 tk

class 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 tk

class 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 = 1
        c = 0
        for 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 += 1
            if c > 3:
                c = 0
                r += 1
        self.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 tk

t = ""
color1 = "skyblue"
color2 = "yellow"
color3 = "pink"
color4 = "red"


def Add(num):
    global t
    t = t + str(num)
    result.set(t)


def Result():
    try:
        global t
        total = str(eval(t))
        result.set(total)
        t = ""
    except:
        result.set(" error ")
        t = ""


def Clear():
    global t
    t = ""
    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()