# -*- coding: utf-8 -*-
import os
import Tkinter as tk
import tkFileDialog
import tkMessageBox
class Application(tk.Frame):
    def __init__(self, master=None):
        tk.Frame.__init__(self, master, bd=3)
        self.pack()
        self.createWidgets()
    def createWidgets(self):
        self.finput=tk.Entry(self, width=48)
        self.finput.pack(side = 'left')
        self.b_select=tk.Button(self, text=u'Выбрать',
                                command=self.select_file).pack(side = 'right')
    def select_file(self):
        self.finput.delete(0, "end")
        self.finput.insert(0, tkFileDialog.askopenfilename(initialdir=os.path.expanduser('~')))
        tkMessageBox.showinfo(u'Имя', self.finput.get())
app = Application()
app.mainloop()

import Tkinter
import tkFileDialog
root = Tkinter.Tk().withdraw()
path_to_file = tkFileDialog.askopenfilename()
print path_to_file

# Сделать бэкап файла
import sys, string, os, shutil
shutil.copyfile("D:/UNBREAKABLE_SPACES/inputfile/file.docx_en-US_ru-RU.sdlxliff", "D:/UNBREAKABLE_SPACES/backup/file.docx_en-US_ru-RU.sdlxliff")
# Открыть файл
file = open ('D:/UNBREAKABLE_SPACES/inputfile/file.docx_en-US_ru-RU.sdlxliff', 'r', encoding='utf-8')
text = file.read()
file.close()
# Определить функцию замены
def replace_all(text, dic):
    for i, j in dic.items():
        text = text.replace(i, j)
    return text 
# Словарь со значениями
reps = {'term1':'replacement1', 'term2':'replacement2'}
# Произвести замену 
replaced = replace_all(text, reps)
# Сохранить изменённый текст в новом файле
filereplaced = open('D:/UNBREAKABLE_SPACES/file.sdlxliff', 'w', encoding='utf-8')
filereplaced.write(replaced)
filereplaced.close()

 
class FileProcessor:
 
    def backup(self, name):
        b = Backuper()
        b.backup(name)
 
    def replace(self, name):
        r = Replacer()
        r.replace_by_dict(name, wdict)
 
 
class Backuper:
 
    def backup(self, name):
        pass
 
 
class Replacer:
 
    def replace_by_dict(self, name, wdict):
        pass
 
 
def process_files()
    fp = FileProcessor()
    names = get_names()
    for name in names:
        fp.backup(name)
        fp.replace(name)
 
def get_names(self):
    name = 'D:/UNBREAKABLE_SPACES/inputfile/file.docx_en-US_ru-RU.sdlxliff'
    return [name]
 
if __name__ == '__main__':
   process_files()