Python:ui Programming Calculator

Origin:

Studying Python UI programming, I prefer its native component, so I learn tkinter, TTK component usage. Find a calculator open source code, slightly trimming, think of memo.
Its interface:

1. Source code (Python 2.7):

#Encoding:utf-8 fromTkinterImport* fromTtkImport*Calc=Tk () calc.title ('Calculator') Calc.resizable (False, False) buttons= [    '7','8','9','*','C',    '4','5','6','/','Neg',    '1','2','3','-','$',    '0','.','=','+','@']#Set up GUIrow = 1Col=0style=Style () style.configure ('BW. TButton', padding=12) forIinchbuttons:action=Lambdax=i:click_event (x) Button (calc, text=i, Width=7, Command=action, style='BW. TButton'). Grid (Row=row, Column=col, sticky='NESW',) Col+ = 1ifCol > 4: Col=0 Row+ = 1Display= Entry (Calc, width=60) Display.grid (Row=0, Column=0, columnspan=5) calc.update () W=calc.winfo_reqwidth () H=calc.winfo_reqheight () S_w=calc.winfo_screenwidth () S_h=calc.winfo_screenheight () calc.geometry ('%dx%d+%d+%d'% (W, H, (s_w-w)/2, (S_H-H)/2) ) Display.focus_set ()defclick_event (key):#=-Calculate results    ifKey = ='=':        #Safeguard against integer division        if '/' inchDisplay.get () and '.'  not inchdisplay.get (): Display.insert (END,'. 0')        #attempt to evaluate results        Try: Result=eval (display.get ()) Display.insert (END,' = '+Str (result))except: Display.insert (END,'Error, use only valid chars')            #clear Display, C    elifKey = ='C': Display.delete (0, END)#$-Clear display    elifKey = ='$': Display.delete (0, end) Display.insert (end,'$$$ $C. $R. $E $A. $M. $')    #@, clear display    elifKey = ='@': Display.delete (0, end) Display.insert (end,'website')    #neg-Negate term    elifKey = ='Neg':        if '=' inchdisplay.get (): Display.delete (0, END)Try:            ifDisplay.get () [0] = ='-': Display.delete (0)Else: Display.insert (0,'-')        exceptIndexerror:Pass            #clear display and start new input    Else:        if '=' inchdisplay.get (): Display.delete (0, end) Display.insert (end, key)#RUNTIMECalc.mainloop ()

2. Generate EXE

Repeatedly compared Py2exe and pyinstaller, found that py2exe in the x64 bit can not support the generation of an EXE file, and its x32, tkinter, can not generate a file.

The effort, but also just less to generate a few files, very uncomfortable:

With Pyinstaller, a single file can be generated. But verifying its startup speed is time-consuming:

Comprehensive comparison, Python do UI, real non-convenient things, with its glue language advantages, enough!

Python:ui Programming Calculator