python计算器

⑴ python计算器

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：

importwx
#beginwxGlade:extracode
#endwxGlade
classMyFrame(wx.Frame):
def__init__(self,*args,**kwds):
#beginwxGlade: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)
#endwxGlade
self.Show(True)
def__set_properties(self):
#beginwxGlade:MyFrame.__set_properties
self.SetTitle("PythonCalculaterbyCYG")
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))
#endwxGlade
def__do_layout(self):
#beginwxGlade: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()
#endwxGlade
defbu1(self,event):#wxGlade:MyFrame.<event_handler>
self.text_ctrl_1.AppendText("1")
event.Skip()
defbu2(self,event):#wxGlade:MyFrame.<event_handler>
self.text_ctrl_1.AppendText("2")
event.Skip()
defbu3(self,event):#wxGlade:MyFrame.<event_handler>
self.text_ctrl_1.AppendText("3")
event.Skip()
defbu_plus(self,event):#wxGlade:MyFrame.<event_handler>
self.num1=self.text_ctrl_1.GetValue()
self.op="+"
self.text_ctrl_1.Clear()
event.Skip()
defbu4(self,event):#wxGlade:MyFrame.<event_handler>
self.text_ctrl_1.AppendText("4")
event.Skip()
defbu5(self,event):#wxGlade:MyFrame.<event_handler>
self.text_ctrl_1.AppendText("5")
event.Skip()
defbu6(self,event):#wxGlade:MyFrame.<event_handler>
self.text_ctrl_1.AppendText("6")
event.Skip()
defbu_min(self,event):#wxGlade:MyFrame.<event_handler>
self.num1=self.text_ctrl_1.GetValue()
self.op="-"
self.text_ctrl_1.Clear()
event.Skip()
defbu7(self,event):#wxGlade:MyFrame.<event_handler>
self.text_ctrl_1.AppendText("7")
event.Skip()
defbu8(self,event):#wxGlade:MyFrame.<event_handler>
self.text_ctrl_1.AppendText("8")
event.Skip()
defbu9(self,event):#wxGlade:MyFrame.<event_handler>
self.text_ctrl_1.AppendText("9")
event.Skip()
defbu_mul(self,event):#wxGlade:MyFrame.<event_handler>
self.num1=self.text_ctrl_1.GetValue()
self.op="x"
self.text_ctrl_1.Clear()
event.Skip()
defbu_clear(self,event):#wxGlade:MyFrame.<event_handler>
self.text_ctrl_1.Clear()
event.Skip()
defbu0(self,event):#wxGlade:MyFrame.<event_handler>
self.text_ctrl_1.AppendText("0")
event.Skip()
defbu_chu(self,event):#wxGlade:MyFrame.<event_handler>
self.num1=self.text_ctrl_1.GetValue()
self.op="/"
self.text_ctrl_1.Clear()
event.Skip()
defbu_result(self,event):#wxGlade:MyFrame.<event_handler>
self.num2=self.text_ctrl_1.GetValue()
num1=int(self.num1)
num2=int(self.num2)
ifself.op=="+":
self.text_ctrl_1.SetValue(str(num1+num2))
elifself.op=="-":
self.text_ctrl_1.SetValue(str(num1-num2))
elifself.op=="x":
self.text_ctrl_1.SetValue(str(num1*num2))
elifself.op=="/":
self.text_ctrl_1.SetValue(str(num1/num2))
event.Skip()
#endofclassMyFrame
if__name__=="__main__":
app=wx.App(False)
myframe=MyFrame(None)
app.MainLoop()

⑵ 用PYTHON2做个计算器，只要加减乘除

# encoding: UTF-8
from Tkinter import *
class App:
def __init__(self,master):
frame=Frame(master)
frame.pack()

self.v = StringVar()
self.v.set(" ")
self.entry1=Entry(frame,text="")
self.entry1.grid(row=0,columnspan=2)
self.label0=Label(frame,text="Answer:").grid(row=1,column=0)
self.label1=Label(frame,textvariable=self.v).grid(row=1,column=1)

self.button1=Button(frame,text=" = ",command=self.inputnumber).grid(row=2)

#self.hi_there.pack(side=LEFT)
def inputnumber(self):
self.v.set(eval(self.entry1.get()))

root=Tk()
app=App(root)
root.mainloop()

以上代码拷贝下来保存为一个py文件，然后运行就好。
注意没有任何错误检查的。

⑶ python计算器制作

最后一句改为
print("您好！此次包裹寄件费用为{}元，欢迎下次光临！".format(p))

⑷ 如何用python实现一个带GUI的面积计算器

强烈推荐使用Tk 库，非常简单。 下面是我正在写的界面，可以运行，后台还没处理好。不懂的可以问我。


#!python2 pymol#coding: utf-8 from Tkinter import *from ttk import *from math import sin,asin,cos,acos class PredictGui(Frame): def __init__(self,parent=None): Frame.__init__(self,parent) self.pack(expand=YES,fill=BOTH) Label(self,text="generate cccc").pack(side=TOP) centerF=Frame(self) centerF.pack(expand=YES,fill=BOTH) Label(centerF,width=50,text="the coord of the center").pack(side=LEFT) self.xyz_var=StringVar() Entry(centerF,text=self.xyz_var,width=15).pack(side=LEFT) self.xyz_var.set('0 0 0') radiusF=Frame(self) radiusF.pack(side=TOP,fill=BOTH,expand=YES) Label(radiusF,text="the radius of the cc",width=50).pack(side=LEFT) self.r_var=DoubleVar() radius_Com=Combobox(radiusF,width=15,textvariable=self.r_var) radius_Com.pack(side=LEFT) radius_Com['values']=( 5.0,10.0,15.0,20.0, ) radius_Com.set('select radius') radius_Com.bind("<<ComboboxSelected>>",self.selectradius) densityF=Frame(self) densityF.pack(expand=YES,fill=BOTH) Label(densityF,text="the density is 0-1",width=50).pack(side=LEFT) self.density_var=DoubleVar() Entry(densityF,text=self.density_var,width=15).pack(side=LEFT) def selectradius(event,self): ''' ''' temp=asin(1.0/self.r_var.get()) self.density_var.set(temp) if __name__ == '__main__': mainW=PredictGui() mainW.mainloop()

⑸ 用python操作Windows的计算器。

pyhook可以抓到键。

不过这里只需要消息就可以了，win32api中的windows的message

使用vc中的消息 工具，抓键盘消息。然后再把这个消息包装一下用pywin32中的API发送过去。

我以前用pyhook加pywin32, 控制过一个游戏，做外挂。

也用pywin32的com接口控制过excel

⑹ python编写计算器

其实有个函数叫eval()的，至于怎么用，看你的了。

⑺ Windows科学计算器与Python，计算结果的巨大差异

您这个表达式是从右向左计算的，所以出现了2^2=4---->2^4=16----->2^16=65536,在计算器上计算是从左向右计算的，所以为2^2=4---->4^2=16------>16^2=256

⑻ 将 Python 当做计算器中的列表

3.1.3. 列表
Python 有几个 复合 数据类型，用于表示其它的值。最通用的是 list (列表) ，它可以写作中括号之间的一列逗号分隔的值。列表的元素不必是同一类型:
>>> squares = [1, 4, 9, 16, 25]
>>> squares
[1, 4, 9, 16, 25]
就像字符串(以及其它所有内建的 序列 类型)一样，列表可以被索引和切片:
>>> squares[0] # indexing returns the item
1
>>> squares[-1]
25
>>> squares[-3:] # slicing returns a new list
[9, 16, 25]
所有的切片操作都会返回一个包含请求的元素的新列表。这意味着下面的切片操作返回列表一个新的（浅）拷贝副本:
>>> squares[:]
[1, 4, 9, 16, 25]
列表也支持连接这样的操作:
>>> squares + [36, 49, 64, 81, 100]
[1, 4, 9, 16, 25, 36, 49, 64, 81, 100]
不像 不可变的 字符串，列表是 可变的，它允许修改元素:
>>> cubes = [1, 8, 27, 65, 125] # something's wrong here
>>> 4 ** 3 # the cube of 4 is 64, not 65!
64
>>> cubes[3] = 64 # replace the wrong value
>>> cubes
[1, 8, 27, 64, 125]
你还可以使用 append() 方法 （后面我们会看到更多关于列表的方法的内容）在列表的末尾添加新的元素:

⑼ python计算器怎么循环

python 中的循环分三种：

while 循环

a=0
b=0
whilea<5:
b+=a#相当于b=b+a
print(b)
a+=1

for 循环

b=0
foriinrange(5):
b+=i
print(b)

递归循环

b=0
deff(a):
ifa<5:
b+=a
print(b)
f(a+1)
else:
return
f(0)

⑽ 求 用python编计算器 原代码

#!/usr/bin/python
#~替换成TAB或空格
if __name__=="__main__":
~line = None
~while line != 'exit':
~~line = raw_input('>')
~~~try:
~~~~print eval(line)
~~~except:
~~~~print 'Error'