I try to collect data for a database inside my tool. At the moment I have only a few variables so I have some entry widgets where the user puts the data in.
So now if I think a bit further I may have 25 or more variables. But I don't want to overflow my GUI with 25 or more entry widgets.
I hope its okay to not include any code, I think entry widgets are well known.
So my question is:
Is there a better widget to collect many inputs? I tried it with a treeview but I cant find a way to make the cells editable or anything similar.
You could have one entry field and next to it a dropdown menu with which the user specifies which data he is entering. 
If you can categorize the inputs, you could look into notebooks/tabs for tkinter to seperate them nicely.
Tkinter GUI many entry widgets, is there a better way?