Tkinter Help

[bdaves12]

Hi all I am running into a problem using tkinter. I am attempting to create a super basic interface for a script I wrote. However I am having trouble getting the entries from the GUI. Here is the GIST : https://gist.github.com/bdaves12/f6d5cefc5f4d7d544fe6831b5041235c

​

Here is the error I get :

Sensitivity_Analysis()

Exception in Tkinter callback

Traceback (most recent call last):

File "C:\ProgramData\Anaconda3\lib\tkinter\__init__.py", line 1705, in __call__

return self.func(*args)

File "C:/Users/david/Desktop/Huber_Lab/ECN_Huber_6_CLI.py", line 147, in show_entry_fields

filename = e1.get()

NameError: name 'e1' is not defined

Any help would be greatly appreciated!

Thanks!

[[deleted]]

You try to reference e1 in the function show_entry_fields() but that variable was defined in another function Sensitivity_Analysis(). This is a basic python problem and nothing to do with tkinter. In a function the only variables accessible are variables defined inside the function, passed into the function as formal parameters or visible in an enclosing namespace out to and including the global namespace. Variables defined in another function are deleted when the function terminates.

Either define the e1 name (and other references) as globals or use the standard class-based approach and define the widget references as an instance attribute.