[Tkinter] Tkinter delete combobox content and not the list

[LagratteCchouette]

Thank you so much,
And if I understood correctly...
but i still miss some notions

            # Delete textbox after records
            combo_auteur.delete(0, Tk.END)
            combo_theme.delete(0, Tk.END)
            entry_citation.delete('1.0', END)
            entry_verset.delete('1.0', END)
            entry_ref.delete('1.0', END)

I still have an error message

Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Users\xxxxx\AppData\Local\Programs\Python\Python37\lib\tkinter\__init__.py", line 1705, in __call__
    return self.func(*args)
  File "C:\Users\xxxx\Documents\PythonDevProgramme\MnesisProject\main5.py", line 358, in <lambda>
    command=lambda : save_citation(combo_auteur.get(), combo_theme.get(), entry_citation.get('1.0', END), entry_ref.get('1.0', END)))
  File "C:\Users\xxxxx\Documents\PythonDevProgramme\MnesisProject\main5.py", line 306, in save_citation
    combo_auteur.delete(0, Tk.END)
AttributeError: type object 'Tk' has no attribute 'END'

my function :

def save_citation(citation_auteur, citation_theme, citation_citation, citation_reference):
    try:    
            connection = sqlite3.connect('mnesis.db') 
            cursor = connection.cursor() 
            #création variable new_citation
            req = "INSERT INTO tb_citation( citation_auteur, citation_theme, citation_citation, citation_reference) VALUES ('"+citation_auteur+"','"+citation_theme+"', '"+citation_citation+"', '"+citation_reference+"')"
            cursor.execute(req)
                                                  
    except Exception as e:
            print("ERREUR",e)
            connection.rollback()
    finally:
            cursor.close()
            connection.commit() 
            connection.close() 

            # Delete textbox after records
            combo_auteur.delete(0, Tk.END)
            combo_theme.delete(0, Tk.END)
            entry_citation.delete('1.0', END)
            entry_verset.delete('1.0', END)
            entry_ref.delete('1.0', END)