python计算器

2023-02-17 11:32:02Python017

python计算器,第1张

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()

import time

print("计算器")

print("+等于加法模式 -等于减法模式 *等于乘法模式 /等于除法模式")

while 2 >1:

try:

print("请输入+，-，*或/")

a = input()

if a == "+":

print("请输入第1个加数")

b = input()

print("请输入第2个加数")

c = input()

print("计算中")

time.sleep(0.3)

j = float(b) + float(c)

print("等于"+str(j))

elif a == "-":

print("请输入被减数")

b = input()

print("请输入减数")

c = input()

print("计算中")

time.sleep(0.3)

j = float(b) - float(c)

print("等于"+str(j))

elif a == "*":

print("请输入第1个因数")

b = input()

print("请输入第2个因数")

c = input()

print("计算中")

time.sleep(0.3)

j = float(b) * float(c)

print("等于"+str(j))

elif a == "/":

print("……等于余数模式 .等于小数模式")

print("请输入……或.")

a = input()

if a == ".":

print("请输入被除数")

b = input()

print("请输入除数")

c = input()

print("计算中")

time.sleep(0.3)

j = float(b) / float(c)

print("等于"+str(j))

if c == "0":

print("除数不能为0！")

elif a == "……":

print("请输入被除数")

b = input()

print("请输入除数")

c = input()

j = float(b) // float(c)

e = float(b) % float(c)

print("等于"+str(j)+"……"+str(e))

if c == "0":

print("除数不能为0！")

except Exception as e:

print("您输入的内容有错误")

我们来尝试一些简单的 Python 命令。启动解释器然后等待主提示符 >>>出现（不需要很久）。

3.1.1. 数字

解释器表现得就像一个简单的计算器：可以向其录入一些表达式，它会给出返回值。表达式语法很直白：运算符 +，-，* 和 / 与其它语言一样(例如：Pascal 或 C)；括号 (()) 用于分组。

整数(例如，2， 4， 20 )的类型是 int，带有小数部分的数字(例如，5.0， 1.6)的类型是 float。在本教程的后面我们会看到更多关于数字类型的内容。

除法(/)永远返回一个浮点数。如要使用 floor 除法并且得到整数结果（丢掉任何小数部分），你可以使用 // 运算符；要计算余数你可以使用 %

此变量对于用户是只读的。不要尝试给它赋值 —— 你只会创建一个独立的同名局部变量，它屏蔽了系统内置变量的魔术效果。

除了 int 和 float，Python 还支持其它数字类型，例如 Decimal 和 Fraction。Python 还内建支持复数，使用后缀 j 或 J 表示虚数部分

请输入数字除数计算器模式

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