这其实是我写的第一次Python图形化界面程序，当时还不会用Qt，于是就用wxPython写的，wx相对于Qt来说还是要麻烦一些，界面看上去也没有Qt高级。博主女生，尝试把计算器界面换成粉红色淡蓝色，最后发现还是黑灰白的顺眼一点。
运行界面如下：
下面是源代码：
# -*- coding: utf-8 -*-
import wx
import math
class MyCalculator(wx.Frame):
def __init__(self):
super().__init__(parent=None,title="MyCalculator",size=(480,400),style=wx.DEFAULT_FRAME_STYLE ^ (wx.RESIZE_BORDER | wx.MINIMIZE_BOX | wx.MAXIMIZE_BOX))
self.Center()
panel = wx.Panel(parent=self)
panel.SetBackgroundColour('white')
panel.Center()
font = wx.Font(14, wx.ROMAN, wx.NORMAL, wx.BOLD, underline=False)
filemenu = wx.Menu()
menuAbout = filemenu.Append(wx.ID_ABOUT,"&About")
filemenu.AppendSeparator()
menuExit = filemenu.Append(wx.ID_EXIT,"&Exit")
menuBar = wx.MenuBar()
menuBar.Append(filemenu, "&File")
self.SetMenuBar(menuBar)
menuBar.SetFont(font)
self.Bind(wx.EVT_MENU, self.OnAbout,menuAbout)
self.Bind(wx.EVT_MENU, self.OnExit,menuExit)
self.equation = ""
self.result = 0
self.ResultFlag = 0
self.textprint = wx.TextCtrl(panel,-1,'',style=wx.TE_MULTILINE)
self.textprint.SetFont(font)
self.textprint.BackgroundColour = 'white'
boxsize = wx.BoxSizer(wx.VERTICAL)
boxsize.Add(self.textprint,1,wx.EXPAND)
gridsizer = wx.GridSizer(cols=5,rows=6,vgap=1,hgap=0)
self.btn0 = wx.Button(panel, label='0')
self.btn1 = wx.Button(panel, label='1')
self.btn2 = wx.Button(panel, label='2')
self.btn3 = wx.Button(panel, label='3')
self.btn4 = wx.Button(panel, label='4')
self.btn5 = wx.Button(panel, label='5')
self.btn6 = wx.Button(panel, label='6')
self.btn7 = wx.Button(panel, label='7')
self.btn8 = wx.Button(panel, label='8')
self.btn9 = wx.Button(panel, label='9')
self.btn10 = wx.Button(panel, label='^')
self.btn11 = wx.Button(panel, label='.')
self.btn12 = wx.Button(panel, label='=')
self.btn13 = wx.Button(panel, label='÷')
self.btn14 = wx.Button(panel, label='×')
self.btn15 = wx.Button(panel, label='-')
self.btn16 = wx.Button(panel, label='+')
self.btn17 = wx.Button(panel, label='Ans')
self.btn18 = wx.Button(panel, label='AC')
self.btn19 = wx.Button(panel, label='DEL')
self.btn20 = wx.Button(panel, label='sin')
self.btn21 = wx.Button(panel, label='cos')
self.btn22 = wx.Button(panel, label='tan')
self.btn23 = wx.Button(panel, label='(')
self.btn24 = wx.Button(panel, label=')')
self.btn25 = wx.Button(panel, label='π')
self.btn26 = wx.Button(panel, label='log')
self.btn27 = wx.Button(panel, label='ln')
self.btn28 = wx.Button(panel, label='sqrt')
self.btn29 = wx.Button(panel, label='mod')
self.btn0.SetFont(font)
self.btn1.SetFont(font)
self.btn2.SetFont(font)
self.btn3.SetFont(font)
self.btn4.SetFont(font)
self.btn5.SetFont(font)
self.btn6.SetFont(font)
self.btn7.SetFont(font)
self.btn8.SetFont(font)
self.btn9.SetFont(font)
self.btn10.SetFont(font)
self.btn11.SetFont(font)
self.btn12.SetFont(font)
self.btn13.SetFont(font)
self.btn14.SetFont(font)
self.btn15.SetFont(font)
self.btn16.SetFont(font)
self.btn17.SetFont(font)
self.btn18.SetFont(font)
self.btn19.SetFont(font)
self.btn20.SetFont(font)
self.btn21.SetFont(font)
self.btn22.SetFont(font)
self.btn23.SetFont(font)
self.btn24.SetFont(font)
self.btn25.SetFont(font)
self.btn26.SetFont(font)
self.btn27.SetFont(font)
self.btn28.SetFont(font)
self.btn29.SetFont(font)
self.Bind(wx.EVT_BUTTON,self.OnAppend,self.btn0)
self.Bind(wx.EVT_BUTTON,self.OnAppend,self.btn1)
self.Bind(wx.EVT_BUTTON,self.OnAppend,self.btn2)
self.Bind(wx.EVT_BUTTON,self.OnAppend,self.btn3)
self.Bind(wx.EVT_BUTTON,self.OnAppend,self.btn4)
self.Bind(wx.EVT_BUTTON,self.OnAppend,self.btn5)
self.Bind(wx.EVT_BUTTON,self.OnAppend,self.btn6)
self.Bind(wx.EVT_BUTTON,self.OnAppend,self.btn7)
self.Bind(wx.EVT_BUTTON,self.OnAppend,self.btn8)
self.Bind(wx.EVT_BUTTON,self.OnAppend,self.btn9)
self.Bind(wx.EVT_BUTTON,self.OnAppend,self.btn10)
self.Bind(wx.EVT_BUTTON,self.OnAppend,self.btn11)
self.Bind(wx.EVT_BUTTON,self.OnResult,self.btn12)
self.Bind(wx.EVT_BUTTON,self.OnAppend,self.btn13)
self.Bind(wx.EVT_BUTTON,self.OnAppend,self.btn14)
self.Bind(wx.EVT_BUTTON,self.OnAppend,self.btn15)
self.Bind(wx.EVT_BUTTON,self.OnAppend,self.btn16)
self.Bind(wx.EVT_BUTTON,self.OnAns,self.btn17)
self.Bind(wx.EVT_BUTTON,self.OnAc,self.btn18)
self.Bind(wx.EVT_BUTTON,self.OnDel,self.btn19)
self.Bind(wx.EVT_BUTTON,self.OnOp,self.btn20)
self.Bind(wx.EVT_BUTTON,self.OnOp,self.btn21)
self.Bind(wx.EVT_BUTTON,self.OnOp,self.btn22)
self.Bind(wx.EVT_BUTTON,self.OnAppend,self.btn23)
self.Bind(wx.EVT_BUTTON,self.OnAppend,self.btn24)
self.Bind(wx.EVT_BUTTON,self.OnAppend,self.btn25)
self.Bind(wx.EVT_BUTTON,self.OnOp,self.btn26)
self.Bind(wx.EVT_BUTTON,self.OnOp,self.btn27)
self.Bind(wx.EVT_BUTTON,self.OnOp,self.btn28)
self.Bind(wx.EVT_BUTTON,self.OnAppend,self.btn29)
self.btn0.BackgroundColour = 'white'
self.btn1.BackgroundColour = 'white'
self.btn2.BackgroundColour = 'white'
self.btn3.BackgroundColour = 'white'
self.btn4.BackgroundColour = 'white'
self.btn5.BackgroundColour = 'white'
self.btn6.BackgroundColour = 'white'
self.btn7.BackgroundColour = 'white'
self.btn8.BackgroundColour = 'white'
self.btn9.BackgroundColour = 'white'
gridsizer.AddMany([(self.btn18, 0, wx.EXPAND),
(self.btn10, 0, wx.EXPAND),
(self.btn28, 0, wx.EXPAND),
(self.btn29, 0, wx.EXPAND),
(self.btn19, 0, wx.EXPAND),
(self.btn26, 0, wx.EXPAND),
(self.btn23, 0, wx.EXPAND),
(self.btn24, 0, wx.EXPAND),
(self.btn27, 0, wx.EXPAND),
(self.btn13, 0, wx.EXPAND),
(self.btn20, 0, wx.EXPAND),
(self.btn7, 0, wx.EXPAND),
(self.btn8, 0, wx.EXPAND),
(self.btn9, 0, wx.EXPAND),
(self.btn14, 0, wx.EXPAND),
(self.btn21, 0, wx.EXPAND),
(self.btn4,0, wx.EXPAND),
(self.btn5, 0, wx.EXPAND),
(self.btn6, 0, wx.EXPAND),
(self.btn15, 0, wx.EXPAND),
(self.btn22, 0, wx.EXPAND),
(self.btn1, 0, wx.EXPAND),
(self.btn2, 0, wx.EXPAND),
(self.btn3, 0, wx.EXPAND),
(self.btn16, 0, wx.EXPAND),
(self.btn25, 0, wx.EXPAND),
(self.btn17, 0, wx.EXPAND),
(self.btn0, 0, wx.EXPAND),
(self.btn11, 0, wx.EXPAND),
(self.btn12, 0, wx.EXPAND),])
boxsize.Add(gridsizer,6,wx.EXPAND)
panel.SetSizerAndFit(boxsize)
self.textprint.SetValue(self.equation)
def OnAbout(self,event):
dlg = wx.MessageDialog(self,"This is a calculator written by Python3.6.","About Program",wx.OK)
dlg.ShowModal()
dlg.Destroy()
def OnAppend(self,event):
ops = ['×', '÷', '+', '-', '^','mod','.']
eventbutton = event.GetEventObject()
label = eventbutton.GetLabel()
if label not in ops and self.ResultFlag != 0:
self.ResultFlag = 0
self.textprint.Clear()
self.result = 0
self.equation = ""
if label in ops and self.ResultFlag != 0:
self.equation = str(self.result)
self.ResultFlag = 0
self.equation += label
self.textprint.SetValue(self.equation)
def OnOp(self,event):
label = event.GetEventObject().GetLabel() +'('
if self.ResultFlag != 0:
self.equation = label + str(self.result)
self.ResultFlag = 0
else:
self.equation += label
self.textprint.SetValue(self.equation)
def OnDel(self,event):
if '=' not in self.equation:
self.ResultFlag = 0
self.result = 0
self.equation = self.equation[:-1]
self.textprint.SetValue(self.equation)
def OnAc(self,event):
self.textprint.Clear()
self.result = 0
self.ResultFlag = 0
self.equation = ""
def OnExit(self,event):
self.Close(True)
def OnResult(self,event):
string = self.equation
if 'log' in string:
string = string.replace('log','log10')
MathFac = ['sqrt','sin','cos','tan','log10']
for fac in MathFac:
if fac in string:
string = string.replace(fac,'math.'+fac)
if 'ln' in string:
string = string.replace('ln','math.log')
if '^' in string:
string = string.replace('^','**')
if '×' in string:
string = string.replace('×','*')
if '÷' in string:
string = string.replace('÷','/')
if 'π' in string:
string = string.replace('π','math.pi')
if 'mod' in string:
string = string.replace('mod','%')
count1 = 0
count2 = 0
for i in string:
if i == '(':
count1 += 1
string += ')'
for i in string:
if i == ')':
count2 += 1
if count1 < count2:
for i in range(count2-count1):
string = '(' +string
count1 = 0
count2 = 0
try:
self.result = round(eval(string),10)
self.equation += '\n=' + str(self.result)
self.textprint.SetValue(self.equation)
self.ResultFlag = 1
except(SyntaxError,ValueError,ZeroDivisionError,TypeError,AttributeError):
dlg = wx.MessageDialog(self,'请输入正确的等式！','请注意',wx.OK|wx.ICON_INFORMATION)
dlg.ShowModal()
dlg.Destroy()
self.textprint.Clear()
self.ResultFlag = 0
self.equation = ""
def OnAns(self,event):
RawAnswer = self.result
self.equation = str(RawAnswer)
self.textprint.SetValue(self.equation)
class App(wx.App):
def OnInit(self):
self.frame=MyCalculator()
self.frame.Bind(wx.EVT_CLOSE, self.OnClose,self.frame)
self.frame.Show()
return True
def OnClose(self,event):
dlg = wx.MessageDialog(None,"是否要关闭窗口？","请确认",wx.YES_NO|wx.ICON_QUESTION)
retCode = dlg.ShowModal()
if(retCode == wx.ID_YES):
self.frame.Destroy()
else:
pass
if __name__ == '__main__':
app=App()
app.MainLoop()
计算器功能比较符合我平常的使用习惯（比如Ans）,但调试过程中发现对于计算7乘(3+4)的积，eval()函数只能识别表达式7*(3+4)，无法识别7(3+4)这样的表达式而报错。