python计算器

Posted 2023-03-09

哪位高手能用Python写出计算器的代码，谢谢！加减乘除即可

python计算器实现：

wx.TextCtrl（文本输入控件），这个作为计算器的显示屏，点击数字时用AppendText方法将数字添加至文本末尾，要取出数字时用GetValue方法，点击运算符时要将文本框中的数字清空（先存储）用Clear方法然后还有将操作符保存，点击等号后要将第二个操作数存储，然后用int方法将字符串转换为数字，计算后用SetValue方法将结果送入文本框，具体代码如下：

import wx
# begin wxGlade: extracode
# end wxGlade
class MyFrame(wx.Frame):
    def __init__(self, *args, **kwds):
        # begin wxGlade: MyFrame.__init__
        kwds["style"] = wx.DEFAULT_FRAME_STYLE
        wx.Frame.__init__(self, *args, **kwds)
        self.text_ctrl_1 = wx.TextCtrl(self, -1, "",style=wx.TE_READONLY)
        self.button_37 = wx.Button(self, -1, "1")
        self.button_38 = wx.Button(self, -1, "2")
        self.button_39 = wx.Button(self, -1, "3")
        self.button_40 = wx.Button(self, -1, "+")
        self.button_41 = wx.Button(self, -1, "4")
        self.button_42 = wx.Button(self, -1, "5")
        self.button_43 = wx.Button(self, -1, "6")
        self.button_44 = wx.Button(self, -1, "-")
        self.button_46 = wx.Button(self, -1, "7")
        self.button_45 = wx.Button(self, -1, "8")
        self.button_47 = wx.Button(self, -1, "9")
        self.button_48 = wx.Button(self, -1, "x")
        self.button_49 = wx.Button(self, -1, "C")
        self.button_50 = wx.Button(self, -1, "0")
        self.button_51 = wx.Button(self, -1, "=")
        self.button_52 = wx.Button(self, -1, "/")
        self.__set_properties()
        self.__do_layout()
        self.Bind(wx.EVT_BUTTON, self.bu1, self.button_37)
        self.Bind(wx.EVT_BUTTON, self.bu2, self.button_38)
        self.Bind(wx.EVT_BUTTON, self.bu3, self.button_39)
        self.Bind(wx.EVT_BUTTON, self.bu_plus, self.button_40)
        self.Bind(wx.EVT_BUTTON, self.bu4, self.button_41)
        self.Bind(wx.EVT_BUTTON, self.bu5, self.button_42)
        self.Bind(wx.EVT_BUTTON, self.bu6, self.button_43)
        self.Bind(wx.EVT_BUTTON, self.bu_min, self.button_44)
        self.Bind(wx.EVT_BUTTON, self.bu7, self.button_46)
        self.Bind(wx.EVT_BUTTON, self.bu8, self.button_45)
        self.Bind(wx.EVT_BUTTON, self.bu9, self.button_47)
        self.Bind(wx.EVT_BUTTON, self.bu_mul, self.button_48)
        self.Bind(wx.EVT_BUTTON, self.bu_clear, self.button_49)
        self.Bind(wx.EVT_BUTTON, self.bu0, self.button_50)
        self.Bind(wx.EVT_BUTTON, self.bu_result, self.button_51)
        self.Bind(wx.EVT_BUTTON, self.bu_chu, self.button_52)
        # end wxGlade
        self.Show(True)
    def __set_properties(self):
        # begin wxGlade: MyFrame.__set_properties
        self.SetTitle("Python Calculater by CYG")
        self.text_ctrl_1.SetMinSize((400, 50))
        self.button_37.SetMinSize((100, 50))
        self.button_38.SetMinSize((100, 50))
        self.button_39.SetMinSize((100, 50))
        self.button_40.SetMinSize((100, 50))
        self.button_41.SetMinSize((100, 50))
        self.button_42.SetMinSize((100, 50))
        self.button_43.SetMinSize((100, 50))
        self.button_44.SetMinSize((100, 50))
        self.button_46.SetMinSize((100, 50))
        self.button_45.SetMinSize((100, 50))
        self.button_47.SetMinSize((100, 50))
        self.button_48.SetMinSize((100, 50))
        self.button_49.SetMinSize((100, 50))
        self.button_50.SetMinSize((100, 50))
        self.button_51.SetMinSize((100, 50))
        self.button_52.SetMinSize((100, 50))
        # end wxGlade
    def __do_layout(self):
        # begin wxGlade: MyFrame.__do_layout
        sizer_2 = wx.BoxSizer(wx.VERTICAL)
        sizer_3 = wx.BoxSizer(wx.VERTICAL)
        grid_sizer_1 = wx.GridSizer(4, 4, 0, 0)
        sizer_3.Add(self.text_ctrl_1, 0, 0, 0)
        grid_sizer_1.Add(self.button_37, 0, 0, 0)
        grid_sizer_1.Add(self.button_38, 0, 0, 0)
        grid_sizer_1.Add(self.button_39, 0, 0, 0)
        grid_sizer_1.Add(self.button_40, 0, 0, 0)
        grid_sizer_1.Add(self.button_41, 0, 0, 0)
        grid_sizer_1.Add(self.button_42, 0, 0, 0)
        grid_sizer_1.Add(self.button_43, 0, 0, 0)
        grid_sizer_1.Add(self.button_44, 0, 0, 0)
        grid_sizer_1.Add(self.button_46, 0, 0, 0)
        grid_sizer_1.Add(self.button_45, 0, 0, 0)
        grid_sizer_1.Add(self.button_47, 0, 0, 0)
        grid_sizer_1.Add(self.button_48, 0, 0, 0)
        grid_sizer_1.Add(self.button_49, 0, 0, 0)
        grid_sizer_1.Add(self.button_50, 0, 0, 0)
        grid_sizer_1.Add(self.button_51, 0, 0, 0)
        grid_sizer_1.Add(self.button_52, 0, 0, 0)
        sizer_3.Add(grid_sizer_1, 1, wx.EXPAND, 0)
        sizer_2.Add(sizer_3, 1, wx.EXPAND, 0)
        self.SetSizer(sizer_2)
        sizer_2.Fit(self)
        self.Layout()
        # end wxGlade
    def bu1(self, event):  # wxGlade: MyFrame.<event_handler>
        self.text_ctrl_1.AppendText("1")
        event.Skip()
    def bu2(self, event):  # wxGlade: MyFrame.<event_handler>
        self.text_ctrl_1.AppendText("2")
        event.Skip()
    def bu3(self, event):  # wxGlade: MyFrame.<event_handler>
        self.text_ctrl_1.AppendText("3")
        event.Skip()
    def bu_plus(self, event):  # wxGlade: MyFrame.<event_handler>
        self.num1=self.text_ctrl_1.GetValue()
        self.op="+"
        self.text_ctrl_1.Clear()
        event.Skip()
    def bu4(self, event):  # wxGlade: MyFrame.<event_handler>
        self.text_ctrl_1.AppendText("4")
        event.Skip()
    def bu5(self, event):  # wxGlade: MyFrame.<event_handler>
        self.text_ctrl_1.AppendText("5")
        event.Skip()
    def bu6(self, event):  # wxGlade: MyFrame.<event_handler>
        self.text_ctrl_1.AppendText("6")
        event.Skip()
    def bu_min(self, event):  # wxGlade: MyFrame.<event_handler>
        self.num1=self.text_ctrl_1.GetValue()
        self.op="-"
        self.text_ctrl_1.Clear()
        event.Skip()
    def bu7(self, event):  # wxGlade: MyFrame.<event_handler>
        self.text_ctrl_1.AppendText("7")
        event.Skip()
    def bu8(self, event):  # wxGlade: MyFrame.<event_handler>
        self.text_ctrl_1.AppendText("8")
        event.Skip()
    def bu9(self, event):  # wxGlade: MyFrame.<event_handler>
        self.text_ctrl_1.AppendText("9")
        event.Skip()
    def bu_mul(self, event):  # wxGlade: MyFrame.<event_handler>
        self.num1=self.text_ctrl_1.GetValue()
        self.op="x"
        self.text_ctrl_1.Clear()
        event.Skip()
    def bu_clear(self, event):  # wxGlade: MyFrame.<event_handler>
        self.text_ctrl_1.Clear()
        event.Skip()
    def bu0(self, event):  # wxGlade: MyFrame.<event_handler>
        self.text_ctrl_1.AppendText("0")
        event.Skip()
    def bu_chu(self, event):  # wxGlade: MyFrame.<event_handler>
        self.num1=self.text_ctrl_1.GetValue()
        self.op="/"
        self.text_ctrl_1.Clear()
        event.Skip()
    def bu_result(self, event):  # wxGlade: MyFrame.<event_handler>
        self.num2=self.text_ctrl_1.GetValue()
        num1=int(self.num1)
        num2=int(self.num2)
        if self.op=="+":
            self.text_ctrl_1.SetValue(str(num1+num2))
        elif self.op=="-":
            self.text_ctrl_1.SetValue(str(num1-num2))
        elif self.op=="x":
            self.text_ctrl_1.SetValue(str(num1*num2))
        elif self.op=="/":
            self.text_ctrl_1.SetValue(str(num1/num2))
        event.Skip()
# end of class MyFrame
if __name__ == "__main__":
    app=wx.App(False)
    myframe=MyFrame(None)
    app.MainLoop()

参考技术A from Tkinter import *

def frame(root,side):
w=Frame(root)
w.pack(side=side,expand=YES,fill=BOTH)
return w

def button(root,side,text,command=None):
w=Button(root,text=text,command=command)
w.pack(side=side,expand=YES,fill=BOTH)
return w

class Calculator(Frame):
def __init__(self):
Frame.__init__(self)
self.pack(expand=YES,fill=BOTH)
self.master.title("Simple Calculator")
self.master.iconname("calcl")

display=StringVar()
Entry(self,relief=SUNKEN,textvariable=display).pack(side=TOP,
expand=YES,fill=BOTH)

for key in ("123","456","789","-0."):
deyF=frame(self,TOP)
for char in key:
button(deyF,LEFT,char,lambda w=display,s="%s"%char: w.set\
(w.get()+s))

opsF=frame(self,TOP)
for char in "+-*/=":
if char=='=':
btn=button(opsF,LEFT,char)
btn.bind("<ButtonRelease-1>",lambda e,s=self, w=display: \
s.clac(w),'+')
else:
btn=button(opsF,LEFT,char,lambda w=display,c=char: w.set\
(w.get()+' '+c+' '))

clearF=frame(self,BOTTOM)
button(clearF,LEFT,'Clr',lambda w=display: w.set(' '))

def clac(self,display):
try:
display.set(eval(display.get()))
except SyntaxError:
display.set("ERROR")
except ZeroDivisionError:
display.set("ZeroDivisionError")

if __name__=="__main__":
Calculator().mainloop()本回答被提问者采纳 参考技术B

简易计算器的话 直接用eval()就可以咯。

a = eval('1+2')
print a

结果为3

参考技术C 》》》3+3
》》》6