[Solved] Tkinter – Deleting rows from a grid dynamically

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I can’t test it since you didn’t provide a working example, but the first thing I notice is that you increment trow after you add the row, so the last row is trow – 1. Since you’ll need to decrement it anyway just do that before you try to delete. 

def delete_row():
    trow -= 1
    l=list(table.grid_slaves(row=trow))
    for w in l:
        w.grid_forget()

Or better yet, forget using your own variable and use table.grid_size() to find the row to add or delete.

Edit: also you seem to be passing a string, not a function, to the button. Change that line to: 

deleteButton = Button(text="delete row", command=delete_row)

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solved Tkinter – Deleting rows from a grid dynamically