Pyodbc does not accept variable from tkinter

[Larz60+]

Untested but should work:

def OptionMenu_SelectionEvent(event):
    print("do whatever here')

optionList = ('Server1', 'Server2', 'Server3', 'd')
    s = tk.StringVar()
    s.set('a')
    self.om = tk.OptionMenu(master, s, *optionList, command = OptionMenu_SelectionEvent)