用thinter, 写了一个计算器程序

from tkinter import *
from tkinter import messagebox
import win32api, win32con, time

class OrdinaryCalculator(object):
    def __init__(self, win=None):
       self.win = win
    def windows(self):
        self.root = Tk()
        self.root.wm_attributes('-topmost', 1)
        self.root.title("计算器")
        self.root.geometry("280x480+800+500")
        self.root.resizable(False, False)
        self.text = Text(self.root, width=25, font=("微软雅黑", 15), height=7, bd=6)
        self.text.pack()

        f1 = Frame(self.root)
        b1 = Button(f1, text="切换", width=4, height=1, font=("微软雅黑", 18), fg='white', bg="gray", command=self.handover)
        b2 = Button(f1, text="← ", width=4, height=1, font=("微软雅黑", 18), fg='white', bg="orange", command=self.getDel)
        b3 = Button(f1, text="AC", width=4, height=1, font=("微软雅黑", 18), fg='white', bg='red', command=self.getAC)
        b4 = Button(f1, text="%", width=4, height=1, font=("微软雅黑", 18), fg='white', bg="gray", command=self.getPercent)
        b1.pack(side=LEFT, padx=1, pady=1)
        b2.pack(side=LEFT, padx=1, pady=1)
        b3.pack(side=LEFT, padx=1, pady=1)
        b4.pack(side=LEFT, padx=1, pady=1)
        f1.pack()

        f2 = Frame(self.root)
        b5 = Button(f2, text="7", width=4, height=1, font=("微软雅黑", 18), bg="white", command=self.get7)
        b6 = Button(f2, text="8", width=4, height=1, font=("微软雅黑", 18), bg="white", command=self.get8)
        b7 = Button(f2, text="9", width=4, height=1, font=("微软雅黑", 18), bg="white", command=self.get9)
        b8 = Button(f2, text="÷", width=4, height=1, font=("微软雅黑", 18), fg='white', bg="gray", command=self.getDevide)
        b5.pack(side=LEFT, padx=1, pady=1)
        b6.pack(side=LEFT, padx=1, pady=1)
        b7.pack(side=LEFT, padx=1, pady=1)
        b8.pack(side=LEFT, padx=1, pady=1)
        f2.pack()

        f3 = Frame(self.root)
        b9 = Button(f3, text="4", width=4, height=1, font=("微软雅黑", 18), bg="white", command=self.get4)
        b10 = Button(f3, text="5", width=4, height=1, font=("微软雅黑", 18), bg="white", command=self.get5)
        b11 = Button(f3, text="6", width=4, height=1, font=("微软雅黑", 18), bg="white", command=self.get6)
        b12 = Button(f3, text="x", width=4, height=1, font=("微软雅黑", 18), fg='white', bg="gray", command=self.getMultipleSign)
        b9.pack(side=LEFT, padx=1, pady=1)
        b10.pack(side=LEFT, padx=1, pady=1)
        b11.pack(side=LEFT, padx=1, pady=1)
        b12.pack(side=LEFT, padx=1, pady=1)
        f3.pack()

        f4 = Frame(self.root)
        b13 = Button(f4, text="1", width=4, height=1, font=("微软雅黑", 18),  bg="white", command=self.get1)
        b14 = Button(f4, text="2", width=4, height=1, font=("微软雅黑", 18),  bg="white", command=self.get2)
        b15 = Button(f4, text="3", width=4, height=1, font=("微软雅黑", 18),  bg="white", command=self.get3)
        b16 = Button(f4, text="-", width=4, height=1, font=("微软雅黑", 18), fg='white', bg="gray", command=self.getMinus)
        b13.pack(side=LEFT, padx=1, pady=1)
        b14.pack(side=LEFT, padx=1, pady=1)
        b15.pack(side=LEFT, padx=1, pady=1)
        b16.pack(side=LEFT, padx=1, pady=1)
        f4.pack()

        f5 = Frame(self.root)
        b17 = Button(f5, text="0", width=4, height=1, font=("微软雅黑", 18), bg="white", command=self.get0)
        b18 = Button(f5, text=".", width=4, height=1, font=("微软雅黑", 18), bg="white", command=self.decimalPoint)
        b19 = Button(f5, text="=", width=4, height=1, font=("微软雅黑", 18), bg="white",command=self.equalSign)
        b20 = Button(f5, text="+", width=4, height=1, font=("微软雅黑", 18), fg='white', bg="gray", command=self.getPlusSign)
        b17.pack(side=LEFT, padx=1, pady=1)
        b18.pack(side=LEFT, padx=1, pady=1)
        b19.pack(side=LEFT, padx=1, pady=1)
        b20.pack(side=LEFT, padx=1, pady=1)
        f5.pack()
        self.Bool = False
        self.root.bind("<Enter>", self.func)  # 鼠标进入事件
        self.Bool_ = True

        self.root.mainloop()

    def func(self, event=None):
        if self.Bool_:
            win32api.SetCursorPos([830, 680])
            time.sleep(0.1)
            win32api.mouse_event(win32con.MOUSEEVENTF_LEFTDOWN, 0, 0, 0)  # 鼠标左键按下
            win32api.mouse_event(win32con.MOUSEEVENTF_LEFTUP, 0, 0, 0)
            self.Bool_ = False
        else:
            return

    def getAC(self):
        self.text.delete(1.0, END)

    def getDel(self):
        if self.text.get(1.0, END) == "\n":
            return
        self.Bool = False
        data = list(self.text.get(1.0, END))
        data.pop()
        data.pop()
        data = "".join(data)
        self.getAC()
        self.text.insert(1.0, data)

    def getPercent(self):
        data = self.text.get(1.0, END).strip('\n')
        if "=" in data and self.Bool:
            data_list = data.split(" = ")
            self.text.insert(END, data_list[-1])
            self.Bool = False
        if len(data) > 0 and data[-1] in [ "%","+", "-", "×", "÷"]:
            newData = data[:len(data) - 1] + "%"
            self.getAC()
            self.text.insert(END, newData)
        else:
            self.text.insert(END, "%")

    def getDevide(self):
        data = self.text.get(1.0, END).strip('\n')
        if "=" in data and self.Bool:
            data_list = data.split(" = ")
            self.text.insert(END, data_list[-1])
            self.Bool = False
        if len(data) > 0 and data[-1] in ["+", "-", "×", "÷"]:
            newData = data[:len(data) - 1] + "÷"
            self.getAC()
            self.text.insert(END, newData)
        else:
            self.text.insert(END, "÷")

    def get7(self):
        self.Bool = False
        self.text.insert(END, "7")

    def get8(self):
        self.Bool = False
        self.text.insert(END, "8")

    def get9(self):
        self.Bool = False
        self.text.insert(END, "9")

    def getMultipleSign(self):
        data = self.text.get(1.0, END).strip('\n')
        if "=" in data and self.Bool:
            data_list = data.split(" = ")
            self.text.insert(END, data_list[-1])
            self.Bool = False
        if len(data) > 0 and data[-1] in ["+", "-", "×", "÷"]:
            newData = data[:len(data) - 1] + "×"
            self.getAC()
            self.text.insert(END, newData)
        else:
            self.text.insert(END, "×")

    def get4(self):
        self.Bool = False
        self.text.insert(END, "4")

    def get5(self):
        self.Bool = False
        self.text.insert(END, "5")

    def get6(self):
        self.Bool = False
        self.text.insert(END, "6")

    def getMinus(self):
        data = self.text.get(1.0, END).strip('\n')
        if "=" in data and self.Bool:
            data_list = data.split(" = ")
            self.text.insert(END, data_list[-1])
            self.Bool = False
        if len(data) > 0 and data[-1] in ["+", "-", "×", "÷"]:
            newData = data[:len(data) - 1] + "-"
            self.getAC()
            self.text.insert(END, newData)
        else:
            self.text.insert(END, "-")

    def get1(self):
        self.Bool = False
        self.text.insert(END, "1")

    def get2(self):
        self.Bool = False
        self.text.insert(END, "2")

    def get3(self):
        self.Bool = False
        self.text.insert(END, "3")

    def getPlusSign(self):
        data = self.text.get(1.0, END).strip('\n')
        if "=" in data and self.Bool:
            data_list = data.split(" = ")
            self.text.insert(END, data_list[-1])
            self.Bool = False
        if len(data) > 0 and data[-1] in ["+", "-", "×", "÷"]:
            newData = data[:len(data) - 1] + "+"
            self.getAC()
            self.text.insert(END, newData)
        else:
            self.text.insert(END, "+")

    def handover(self):
        self.root.destroy()
        self.win.windows()


    def get0(self):
        self.Bool = False
        self.text.insert(END, "0")

    def decimalPoint(self):
        self.text.insert(END, ".")

    def equalSign(self):
        try:
            data = self.text.get(1.0, END).strip('\n').replace("×", "*").replace("÷", "/").replace("%", "*0.01")
            data1 = self.text.get(1.0, "1.end").strip('\n').replace("×", "*").replace("÷", "/").replace("%", "*0.01")
            data2 = self.text.get(2.0, "2.end").strip('\n').replace("×", "*").replace("÷", "/").replace("%", "*0.01")
            data3 = self.text.get(3.0, "3.end").strip('\n').replace("×", "*").replace("÷", "/").replace("%", "*0.01")
            data4 = self.text.get(4.0, "4.end").strip('\n').replace("×", "*").replace("÷", "/").replace("%", "*0.01")
            data5 = self.text.get(5.0, "5.end").strip('\n').replace("×", "*").replace("÷", "/").replace("%", "*0.01")
            data6 = self.text.get(6.0, "6.end").strip('\n').replace("×", "*").replace("÷", "/").replace("%", "*0.01")
            data7 = self.text.get(7.0, "7.end").strip('\n').replace("×", "*").replace("÷", "/").replace("%", "*0.01")
            if "=" not in data:
                data = eval(data)
                self.text.insert(END, " = " + str(data) + "\n")
            elif "=" in data1 and data2 != "\n" and "=" not in data2:
                data2 = eval(data2)
                self.text.insert(END, " = " + str(data2) + "\n")
            elif "=" in data2 and data3 != "\n" and "=" not in data3:
                data3 = eval(data3)
                self.text.insert(END, " = " + str(data3) + "\n")
            elif "=" in data3 and data4 != "\n" and "=" not in data4:
                data4 = eval(data4)
                self.text.insert(END, " = " + str(data4) + "\n")
            elif "=" in data4 and data5 != "\n" and "=" not in data5:
                data5 = eval(data5)
                self.text.insert(END, " = " + str(data5) + "\n")
            elif "=" in data5 and data6 != "\n" and "=" not in data6:
                data6 = eval(data6)
                self.text.insert(END, " = " + str(data6) + "\n")
            elif "=" in data6 and data7 != "\n" and "=" not in data7:
                data7 = eval(data7)
                self.text.insert(END, " = " + str(data7))
            else:
                return
            self.Bool = True
        except:
            messagebox._show("温馨提示", "语法出错")

if __name__ == "__main__":
    OC = OrdinaryCalculator()
    OC.windows()