Python如何将用户提供的IP地址写入文件？

Question

所以问题来了。我开始使用python有一段时间了，遇到了一个问题。虽然一开始看起来很基本，但它让我忙了好几个小时。 *运行程序时我没有收到任何语法错误，尽管程序无法将新的IP写入文件。在

我正在为一个程序做一个函数，它要求客户机提供一个新的IP地址，因为服务器（我的IP）目前不是静态的。由于我的IP更改非常频繁，我希望给客户机（正在尝试与我建立连接）更改他们尝试连接的IP的选项。在

函数如下：

#CONFIGURE NEW IP
def IpConfigNew():
   #Creates new window 
   IpConfig = Tk()
   IpConfig.configure(background = 'white')
   IpConfig.title('Configure IP')
   IpConfig.geometry('300x60+260+380')
   IpNew = StringVar()
   Label(IpConfig, font  = ('Helvetica',12), text = 'Please enter the IP address of the   server', bg = 'white').place(x=0,y=4)
   #Creates box for user to type IP in.
   Entry(IpConfig,textvariable=IpNew, bg = "light blue").place(x=4,y=35)

 #Store New Ip NOTE that it is nested within IpConfigNew
 def IpStore():
     #Retrieves new IP from text box and stores it in variable 
     GetIpNew = IpNew.get()
     mypath = str('Latest Server')
     #Creates directory to write new IP to.
     if not os.path.isdir(mypath):
         os.makedirs(mypath)
     StoreLatestServer = open('Latest Server\NewIp.txt', 'w')
     #Writes new IP
     StoreLatestServer.write("%s"%(GetIpNew))
     StoreLatestServer.close()
     IpConfig.destroy()#Closes window

   #Calls on function IpStore in order to store the new IP    
   Button(IpConfig,text = 'Done', command = IpStore).place(x=150,y=30)
   IpConfig.mainloop()

def PromptIpReconfig():
  confirm = tkMessageBox.askyesno(title = "Configure Server IP", message = "Are you   sure?")
#Checks to see if the user chose to change IP
if confirm >0: 
  #In the event that the user said yes go to IpConfigNew
  IpConfigNew()
else:
   return

#Configure Menu Bar #Sets up Menu Bar for parent Window(app)
menubar = Menu(app)
filemenu = Menu(menubar,tearoff = 0)
# Goes to     PromptIpReconfig (Prompts user to Reconfigure the IP after clicking button)
filemenu.add_command(label="Configure IP", command = PromptIpReconfig) 
filemenu.add_command(label="Quit", command=app.destroy)
menubar.add_cascade(label='Options',menu = filemenu)
app.config(menu=menubar)#Draws menubar on parent window(app)

我不知道为什么它不起作用，因为我以前做过这件事，期望稍有不同。尝试写入新文件时，我尝试写入新文件。新目录被创建了，所以我知道该函数正在工作。我对比了我之前制作的程序和这个程序。 我发现，如果我这样做，效果很好：

^{pr2}$

我发现，如果我不使用菜单栏启动，而是在程序启动时启动它，它工作得很好。我不确定问题是从菜单栏调用ipconfig函数，还是与我正在嵌套函数有关。在

如果有人能帮我出去，我会很高兴的，因为它已经困扰了我好几天了！在

Answer 1

我事先没有把我的计划安排得很清楚，我现在就试着解释一下。在

我所拥有的是我的主窗口，在我的主窗口（称为“应用程序”）中，我设置了一个菜单栏。此菜单栏有一个称为“选项”的级联和一个名为“PromptPreConfig”的命令：

app = Tk() 
filemenu.add_command(label="Configure IP", command = PromptIpReconfig)
filemenu.add_command(label="Quit", command=app.destroy)
menubar.add_cascade(label='Options',menu = filemenu)

当我调用函数“promptPreConfig”时，会发生以下情况：

^{pr2}$

如果用户决定说“是”，则调用IpConfigNew()：

#CONFIGURE NEW IP
def IpConfigNew():
    IpConfig = Tk()
    IpConfig.configure(background = 'white')
    IpConfig.title('Configure IP')
    IpConfig.geometry('300x60+260+380')
    IpNew = StringVar()
    Label(IpConfig, font  = ('Helvetica',12), text = 'Please enter the IP address of the server', bg = 'white').place(x=0,y=4)
    Entry(IpConfig,textvariable=IpNew, bg = "light blue").place(x=4,y=35)

    #Store New Ip
    def IpStore():
        GetIpNew = IpNew.get()
        mypath = str('Latest Server')
        if not os.path.isdir(mypath):
            os.makedirs(mypath)
        StoreLatestServer = open('Latest Server\NewIp.txt', 'w')
        StoreLatestServer.write("%s"%(GetIpNew))
        StoreLatestServer.close()
        IpConfig.destroy()

    Button(IpConfig,text = 'Done', command = IpStore).place(x=150,y=30)
    IpConfig.mainloop()

ipconfig在主窗口中打开子窗口IpConfig = Tk()。子窗口提供了一个在输入新IP后单击的按钮。单击按钮后，它将调用命令“IpStore”：

#Store New Ip
def IpStore():
    GetIpNew = IpNew.get()
    mypath = str('Latest Server')
    if not os.path.isdir(mypath):
        os.makedirs(mypath)
    StoreLatestServer = open('Latest Server\NewIp.txt', 'w')
    StoreLatestServer.write("%s"%(GetIpNew))
    StoreLatestServer.close()
    IpConfig.destroy()

基本上，我的程序总体布局如下：

from Tkinter import *
import os
import tkMessageBox
#Create parent window
app = Tk()

def IpConfigNew():
   #Creates new window 
   IpConfig = Tk()
   IpNew = StringVar()
   Label(IpConfig, font  = ('Helvetica',12), text = 'Please enter the IP address of the   server', bg = 'white').place(x=0,y=4)
   #Creates box for user to type IP in.
   Entry(IpConfig,textvariable=IpNew, bg = "light blue").place(x=4,y=35)

 #Store New Ip NOTE that it is nested within IpConfigNew
 def IpStore():
     #Retrieves new IP from text box and stores it in variable 
     GetIpNew = IpNew.get()
     mypath = str('Latest Server')
     #Creates directory to write new IP to.
     if not os.path.isdir(mypath):
         os.makedirs(mypath)
     StoreLatestServer = open('Latest Server\NewIp.txt', 'w')
     #Writes new IP
     StoreLatestServer.write("%s"%(GetIpNew))
     StoreLatestServer.close()
     IpConfig.destroy()#Closes window

   #Calls on function IpStore in order to store the new IP    
   Button(IpConfig,text = 'Done', command = IpStore).place(x=150,y=30)
   IpConfig.mainloop()

def PromptIpReconfig():
   confirm = tkMessageBox.askyesno(title = "Configure Server IP", message = "Are you sure?")
   if confirm >0:
      #In the case that the user says yes
      IpConfigNew()
   else:
      return


#Create menu bar
filemenu.add_command(label="Configure IP", command = PromptIpReconfig)
filemenu.add_command(label="Quit", command=app.destroy)
menubar.add_cascade(label='Options',menu = filemenu)

app.mainloop()

我很确定问题出在ipconfig函数上，因为这似乎是有效的：

from Tkinter import *
import tkMessageBox
import os


#Creates new window   
IpConfig = Tk()
IpNew = StringVar()
Label(IpConfig, font  = ('Helvetica',12), text = 'Please enter the IP address of the   server', bg = 'white').place(x=0,y=4)
#Creates box for user to type IP in.
Entry(IpConfig,textvariable=IpNew, bg = "light blue").place(x=4,y=35)

#Store New Ip NOTE that it is nested within IpConfigNew
def IpStore():
     #Retrieves new IP from text box and stores it in variable 
     GetIpNew = IpNew.get()
     mypath = str('Latest Server')
     #Creates directory to write new IP to.
     if not os.path.isdir(mypath):
         os.makedirs(mypath)
     StoreLatestServer = open('Latest Server\NewIp.txt', 'w')
     #Writes new IP
     StoreLatestServer.write("%s"%(GetIpNew))
     StoreLatestServer.close()
     IpConfig.destroy()#Closes window

#Calls on function IpStore in order to store the new IP    
Button(IpConfig,text = 'Done', command = IpStore).place(x=150,y=30)
IpConfig.mainloop()

这会让你们更清楚地了解我在处理什么。 谢谢