python实现图形界面执行linux命

[root@localhost ~]# cat cmd.py
#-*- encoding=UTF-8 -*-
import Tkinter
from Tkinter import *
from FileDialog import *
import os
root = Tk()
import tkFont 
root.title('图形执行命令工具')
root.geometry('800x400')
root.resizable(False,False)#固定窗口大小
f  = tkFont.Font(family = 'Courier New', size = 10)#字体大小
#路径函数
def cmd_path():
    fd = FileDialog(root, title = '命令路径')
    file_path = fd.go()
    if file_path: 
        path_entry.insert(0, file_path)#把路径插入对话框里 
#清屏函数(这里每一个对话框都清除)
def cmd_clear():
    path_entry.delete(0, END)
    param_entry.delete(0, END)
    log_text.delete(1.0, END)
#命令运行函数
def cmd_run():
    cmd_entry = Entry(root,border = 0)
    cmd_entry.grid()
    _path = path_entry.get() #获取命令路径
    _cmd  = cmd_entry.get()  #获取命令
    if not _path:  #在这里做一个判断，如果没有选择路径就显示以下
        log_text.insert(END, '请选择正确的路径！\n', 'n')
    else:
        _value = param_entry.get()#获取参数
        all_cmd     = _path + ' ' + _cmd + ' ' + _value#获取所有的命令
        log_text.insert(END, all_cmd + '\n', 'c')  #插入命令
        cmd_response = os.popen(all_cmd).readlines() #运行命令并获取返回内容
        log_text.insert(END, ''.join(cmd_response), 'l')  #将返回内容写入到下面的文本框
        del cmd_response
       
path_label = Label(root,text = '命令路径(绝对路径):',  font = f)#创目路径tag 
path_label.grid(row = 0, column = 0, sticky = W)  #使用grid布局方式
path_entry = Entry(root, font = f, width = 60, border = 2)  #创建输入框        
path_entry.grid(row = 0, column = 1, sticky = W) 
path_btn = Button(root,text = '选择命令',  font = f,  width = 20,  command = cmd_path)#使用上面定义的函数cmd_path执行按钮
path_btn.grid(row = 0, column = 2, sticky = W)
                 
param_label = Label(root,  text = '命令参数:',  font = f)#参数tag
param_label.grid(row = 2, column = 0, sticky = W) 
param_entry = Entry(root, font = f, width = 60, border = 2)#创建输入框
param_entry.grid(row = 2, column = 1, sticky = W) 
run_btn = Button(root,text = '运行命令',font = f,command = cmd_run,width = 20)#使用上面定义的函数cmd_run执行按钮
run_btn.grid(row = 1, column = 2, sticky = W)
clear_btn = Button(root,text = '清屏',  font = f,  command = cmd_clear,  width = 20)#使用上面定义的函数cmd_clear执行按钮
clear_btn.grid(row = 2, column = 2, sticky = W)
log_text = Text(root,font = f,width = 105,  border = 2,) #文本框
log_text.grid(columnspan = 3, sticky = W)
root.mainloop()