??? 今天看到了GUI編程，書上推薦用wxPython，去官網(wǎng)上看了看，發(fā)現(xiàn)Windows的最高支持到2.7，我用的是3.4版本，咋辦，用自帶的庫--Tkinter唄，它是Python的默認(rèn)GUI庫，幾乎是個(gè)標(biāo)準(zhǔn)庫，也是受廣大開發(fā)者喜愛的。

??? Tkinter有很多組件（其實(shí)也不多，十來個(gè)），今天主要用標(biāo)簽、按鈕、進(jìn)度條，寫一個(gè)字體隨進(jìn)度條改變大小并且可以寫文件的小程序，其他組件用法看文檔就行，以前用C#寫過winform的應(yīng)該有經(jīng)驗(yàn)。直接上代碼：

#---coding:utf-8--- from tkinter import * #導(dǎo)包 def resize(ev=None):'根據(jù)進(jìn)度條調(diào)整字體大小'label.config(font='Helvetica -%d bold' %scale.get())def writefile():'寫文件'try:f = open(r'd:\hello.txt','w')f.write('hello,world!')except Exception as e:print(e)finally:f.close()top = Tk()#新建一個(gè)窗口 top.geometry('400x300')#指定窗口大小 top.title('GUI_test')label = Label(top,text='Hello,World!',font='Helvetica -12 bold')#隨進(jìn)度條變化的標(biāo)簽，剛開始學(xué)當(dāng)然用hello，world label.pack(fill=Y,expand=1)scale = Scale(top,from_=10,to=50,orient=HORIZONTAL,command=resize)#進(jìn)度條，個(gè)人認(rèn)為command作用和綁定差不多 scale.set(12)#設(shè)初值 scale.pack(fill=X,expand=1)write = Button(top,text="Write",command=writefile) write.pack()quit = Button(top,text="Quit",command=top.quit,activeforeground='White',activebackground='red') quit.pack()mainloop()#調(diào)用該函數(shù)運(yùn)行程序

??? ?注意到每配置好一個(gè)組件，后面都有一句X.pack(***)，最后的mainloop()是用來啟動你編的GUI程序，那pack()是什么鬼，查一下文檔，有這么一段話

The packer is one of Tk’s geometry-management mechanisms. Geometry managers are used to specify the relative positioning of the positioning of widgets within their container - their mutual master. In contrast to the more cumbersome placer (which is used less commonly, and we do not cover here), the packer takes qualitative relationship specification - above, to the left of, filling, etc - and works everything out to determine the exact placement coordinates for you.The pack() method can be called with keyword-option/value pairs that control where the widget is to appear within its container, and how it is to behave when the main application window is resized.意思大概就是說packer這哥們是管理和顯示組件的，pack()方法用來指定組件的顯示?？聪逻\(yùn)行效果：

???

??? 打開D盤hello.txt，發(fā)現(xiàn)了我們寫的hello，world！這樣簡單的GUI編程完成了，還用到了一點(diǎn)文件編程的知識，和預(yù)期效果一樣，得趕快學(xué)習(xí)網(wǎng)絡(luò)部分了，不然畢設(shè)進(jìn)度得耽擱了。

轉(zhuǎn)載于:https://www.cnblogs.com/littleseven/p/5369149.html

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