Python GUI编程实例

 import os
 from time import sleep
 from tkinter import *
 from tkinter.messagebox import showinfo

 class DirList(object):
     def __init__(self, initdir=None):
         self.top = Tk()
         self.label = Label(master=self.top, text='Directory Lister V1.0')
         self.label.pack()

         self.cwd = StringVar(master=self.top)

         self.dirl = Label(self.top, fg='blue', font=('Helvetica', 14, 'bold'))
         self.dirl.pack()

         self.dirfm = Frame(master=self.top)
         self.dirsb = Scrollbar(master=self.dirfm)
         self.dirsb.pack(side=RIGHT,fill=Y)　　　　# fill=Y，垂直填充空间排列

         self.dirs = Listbox(master=self.dirfm, height=15, width=50, yscrollcommand=self.dirsb.set)
         self.dirs.bind('<Double-1>', func=self.setDirAndGo)   　　# <Double-1>，双击显示路径列表
         self.dirsb.config(command=self.dirs.yview)
         self.dirs.pack(side=LEFT, fill=BOTH)
         self.dirfm.pack()

         self.dirn = Entry(master=self.top, width=50, textvariable=self.cwd)
         self.dirn.bind('<Return>', func=self.doLS)
         self.dirn.pack()

         self.bfm = Frame(master=self.top)
         self.cleer = Button(master=self.bfm, text='清除', command=self.clrDir, activeforeground='white',
                           activebackground='blue')
         self.ls = Button(master=self.bfm, text='显示列表', command=self.doLS, activeforeground='white',
                          activebackground='green')
         self.quit = Button(master=self.bfm, text='退出', command=self.top.quit, activeforeground='white',
                            activebackground='red')
         self.cleer.pack(side=LEFT)
         self.ls.pack(side=LEFT)
         self.quit.pack(side=LEFT)
         self.bfm.pack()

         if initdir:
             self.cwd.set(os.curdir)
             self.doLS()

     def setDirAndGo(self, ev=None):
         self.last = self.cwd.get()
         self.dirs.config(selectbackground='red')
         chek = self.dirs.get(self.dirs.curselection())
         if not chek:
             chek = os.curdir
         self.cwd.set(chek)
         self.doLS()

     def doLS(self, ev=None):
         error = ''
         tdir = self.cwd.get()
         if not tdir:
             tdir = os.curdir
         if not os.path.exists(tdir):
             error = tdir + '：未找到文件，请检查路径！'
         elif not os.path.isdir(tdir):
             error = tdir + '：不是一个路径！'

         if error:
             # self.cwd.set(error)
             showinfo(title='提示',message=error)
             self.top.update()
             # sleep(2)
             if not (hasattr(self, 'last') and self.last):
                 self.last = os.curdir
                 self.cwd.set(self.last)
                 self.dirs.config(selectbackground='LightSkyBlue')
                 self.top.update()
                 return

         if not os.path.isdir(tdir):
             self.cwd.set('')
         else:
             self.cwd.set('获取目录内容中...')
         self.top.update()
         dirlist = os.listdir(tdir)
         dirlist.sort()
         os.chdir(tdir)

         self.dirl.config(text=os.getcwd())
         self.dirs.delete(0, END)
         self.dirs.insert(END, os.curdir)
         self.dirs.insert(END, os.pardir)

         for eachfile in dirlist:
             self.dirs.insert(END, eachfile)

         self.cwd.set(os.curdir)
         self.dirs.config(selectbackground='LightSkyBlue')

     def clrDir(self, ev=None):
         self.cwd.set('')

 if __name__ == '__main__':
     dir = DirList(os.curdir)
     mainloop()

效果如下：

　　至此，转载请注明出处。