Python example rename gadget based on tkinter module implementation

This article illustrates Python's renaming gadget based on the tkinter module. To share for your reference, specific as follows:

#!/usr/bin/env python
#coding=utf-8
# 
#  All rights reserved  2014 yao_yu
#  This code is to MIT Release of License Agreement 
#  File name batch addition .xls The suffix 
# 2014-04-21  create 
# 
import os
import tkinter as tk
from tkinter  import ttk
version = '2014-04-21'
app_title = ' Add suffixes to filenames in batches  Ver:' + version
listdir = os.listdir
isdir = os.path.isdir
isfile = os.path.isfile
path_join = os.path.join
#---------------------------- Object Visit  ----------------------------#
def visit_directory_files(root, visitor):
  for i in listdir(root):
    i = path_join(root, i)
    if isdir(i):
      if visit_directory_files(i, visitor):
        return True
    elif isfile(i):
      if visitor(i):
        return True
#----------------------------  Visitor  ----------------------------#
class ListVisitor(object):
  def __init__(self, *visitors, terminate = True):
    if (visitors 
         and isinstance(visitors, (list, tuple)) 
         and isinstance(visitors[0], (list, tuple))):
      visitors = visitors[0]
    self._visitors = list(visitors)
    self._terminate = terminate
  def __call__(self, *args, **kwdargs):
    for visitor in self._visitors:
      if visitor(*args, **kwdargs):
        return self._terminate
  def append(self, visitor):
    assert(visitor)
    self._visitors.append(visitor)
def get_screen_size(window):
  return window.winfo_screenwidth(),window.winfo_screenheight()
def get_window_size(window):
  return window.winfo_reqwidth(),window.winfo_reqheight()
def center_window(root, width, height):
  screenwidth = root.winfo_screenwidth()
  screenheight = root.winfo_screenheight()
  size = '%dx%d+%d+%d' % (width, height, (screenwidth - width)/2, (screenheight - height)/2)
  root.geometry(size)
class Application(object):
  def __init__(self, master):
    self.master = ttk.Frame(master)
    self.master.pack(side = tk.TOP, expand = tk.YES, fill = tk.BOTH)
    self.create_widgets()
  def create_widgets(self):
    master = self.master
    master.columnconfigure(1, weight=1)
    master.rowconfigure(2, weight=1)
    self.targetdir = tk.StringVar()
    self.targetdir.set('/Volumes/Data/Document/Test')
    padx = 5
    pady = 10
    ttk.Label(master, text=" Operating directory ").grid(row = 0, column = 0, stick = tk.E, padx = padx, pady = pady)
    ttk.Entry(master, textvariable = self.targetdir).grid(row = 0, column = 1, stick = tk.EW, padx = padx)
    commands = ttk.Frame(master)
    commands.grid(row = 1, column = 0, columnspan = 2)
    ttk.Button(commands, text=" start ", command = self.onStart).pack(side = tk.LEFT)
    ttk.Button(commands, text=" exit ", command = master.quit).pack(side = tk.LEFT)
    self.status = tk.StringVar()
    self.status.set(' ready ')
    master.rowconfigure(3, minsize = 160)
    ttk.Label(master, textvariable = self.status, wraplength=600).grid(row = 3, column = 0, columnspan = 2, padx = padx, stick = tk.NSEW)
    self.progress = ttk.Progressbar(master, maximum=100, orient=tk.HORIZONTAL, mode='determinate')
    self.progress.grid(row = 4, column = 0, columnspan = 2, padx = padx, stick = tk.NSEW)
  def onStart(self):
    targetdir = self.targetdir.get().strip()
    basename = os.path.basename(targetdir)
    if os.path.isdir(targetdir):
      listvisitor = ListVisitor(ProgressVisitor(self.progress),
                    self.StatusVisitor(),
                    FileLogVisitor(basename),
                    #FileRenameVisitor(basename),
                    )
      visit_directory_files(targetdir, listvisitor)
    else:
      self.status.set(' The target directory does not exist ')
  def StatusVisitor(self):
    print_status = self.status.set
    def __call__(file):
      __call__.n += 1
      print_status('%s,%s' % (__call__.n, file))
    __call__.n = 0
    return __call__
splitext = os.path.splitext
file_rename = os.rename
knownexts = dict.fromkeys(['.jpg', '.log', '.pdf', '.tif', '.xls', '.zip', '.rar'])
class FileRenameVisitor(object):
  def __init__(self, file):
    self.__fp = open('%s_%s_rename.txt' % (os.path.splitext(__file__)[0], file), 'w')
  def __call__(self, file):
    ext = splitext(file)[1].lower()
    if ext not in knownexts:
      file_rename(file, file + '.xls')
      self.__fp.write('%s\n' % file)
  def __del__(self):
    self.__fp.close()
class FileLogVisitor(object):
  def __init__(self, file):
    self.__fp = open('%s_%s_all.txt' % (os.path.splitext(__file__)[0], file), 'w')
  def __call__(self, file):
    self.__fp.write('%s\n' % file)
  def __del__(self):
    self.__fp.close()
class ProgressVisitor(object):
  COUNT = 202
  def __init__(self, progress, count=COUNT):
    self.progress = progress
    if count and isinstance(count, int) and count > 0:
      self.count = count
    else:
      self.count = self.COUNT
    self.n = 1
  def __call__(self, *args, **kwdargs):
    self.n += 1
    if self.n == self.count:
      self.progress.step()
      self.progress.update()
      self.n = 1
  def __del__(self):
    self.progress['value'] = 0
if __name__ == '__main__':
  root = tk.Tk()
  root.title(app_title)
  app = Application(root)
  center_window(root, 600, 240)
  tk.mainloop()

For more information about Python, please refer to Python Coding Skills summary, Python Data Structure and Algorithm Tutorial, Python Function Skills Summary, Python String Manipulation Skills Summary and Python Introduction and Advanced Classic Tutorial.

I hope this article has been helpful in Python programming.