Module Import from tkinter Widget - python-3.x

Question

Not long ago I asked an question on how to import from an input statement. Nailed it. Now I'm upgrading my lengthy code to a GUI for the user. Same problem. How do I import a module based on user input from the tkinter widget Entry.
I originally had:
var1=__import__(input("Enter a module: "))
And attempted something like this:
import tkinter
var1=__import__(tkinter.Entry(top, bd=5)).pack()
A few different phrasings all resulted in the basic error:
TypeError: __import__() argument 1 must be str, not Entry
I have a few different methods still on my list to try. For example:
var1=Entry(top, bd=5).grid(row=7)
var2=Entry.get(var1)
var=__import__(var2)
This gives me the rather awful error:
Exception in Tkinter callback
Traceback (most recent call last):
File "C:\Python33\lib\tkinter\__init__.py", line 1475, in __call__
return self.func(*args)
File "C:\Python33\Doc\Project\testing.py", line 21, in finish
var2=Entry.get(var1)
File "C:\Python33\lib\tkinter\__init__.py", line 2512, in get
return self.tk.call(self._w, 'get')
AttributeError: 'NoneType' object has no attribute 'tk'

Answer 1

You need Entry instance to work with it.
This way:
my_entry = Entry(top, bd=5) # you get object (Entry instance)
my_entry.grid(row=7) # you call object method grid()
entry_text = my_entry.get() # you call object method get()
var = __import__(entry_text)
BTW:
This way you get result of grid() function, not Entry instance.
var1 = Entry(top, bd=5).grid(row=7) # grid() returns always None
see
my_entry = Entry(top, bd=5)
grid_result = my_entry.grid(row=7) # grid() returns always None
var1 = grid_result
In this code you try to pack() imported library :)
var1 = __import__(tkinter.Entry(top, bd=5)).pack()
see
my_entry = Entry(top, bd=5) # you get object
imported_library = __import__(my_entry) # object can't be argument for __import__
var1 = imported_library.pack() # you can't pack library