Access from one class to methode of other class

[Kent Johnson]

VK wrote:
>> On Thu, 26 May 2005 14:33:45 +0200, VK <"myname"@example.invalid>
>> declaimed the following in comp.lang.python:
>>
>>
>>> Hi, all!
>>>
>>> In my programm i have to insert a variable from class 2 to class 1 
>>> and I get error NameError: global name 'd' is not defined. How do I 
>>> get access to d.entry.insert() method of class 1

> 
> from Tkinter import *
> 
> class First:
>         def __init__(self):
>             self.root = Tk()  # create window contents as children to 
> root..
>             self.entryframe = Frame(self.root)
>             self.entryframe.pack(fill=BOTH,expand=1)
> 
>             self.entry = Entry(self.entryframe)
>             self.entry.pack(side=TOP,expand=1,fill=BOTH)
>             self.entry.focus()
>             self.entry.bind('<Return>',(lambda event: self.fetch())) # 
> on enter key
> 
>             self.button = 
> Button(self.entryframe,text="Call",command=self.getvar)
>             self.button.pack(side=LEFT,expand=YES,fill=BOTH)
> 
>             self.root.mainloop()
> 
>         def fetch(self):
>             print 'Input => "%s"' % self.entry.get() # get text form entry
> 
>         def getvar(self,event=0):
>             c=Second(self,self.root)
> 
> 
> 
> class Second:
>     def __init__(self,parent,s="thing"):
>         self.root = Tk()
>         self.ent = Entry(self.root)
>         self.ent.pack()
>         self.btn = Button(self.root,text='Fetch',command=self.fetch)
>         self.btn.pack(side=RIGHT)
>     def fetch(self):
>             text = self.ent.get() # get text form entry in this window
>             d.entry.insert(0, text)# must insert in other window
> 
> d = First() #First window

The problem is that First.__init__() never returns so the instance of First is never bound to d. 
Take the line
   self.root.mainloop()
out of First.__init__() and and the line
d.root.mainloop()

at the end of the program and it will work as you expect.

Kent