With tkinter text widget, how to use .insert so that it overwrites the entire text content?

I am building a restaurant menu using sql tables and tkinter which has buttons for Entrees, Mains and Desserts but it is stuck on the Entrees page for some reason:

#Setup - TKinter
import tkinter as tk
w = tk.Tk()
w.title("Interactive Restaurant Menu")
w.geometry("640x640")
w.resizable(False,False)
w['bg'] = 'black'
#Setup - SQL
import mysql.connector as mc
con = mc.connect(user = 'root',host = 'localhost', password = 'Cars!234',database = 'Zayan')
cur = con.cursor()
#Printing Menu Items
v = tk.Scrollbar( orient='vertical')
list = tk.Text(bg = 'black',font = ('Baskerville', 18),wrap = tk.WORD,yscrollcommand = v.set)
list.grid(column = 0,row = 2, columnspan = 4,padx = 20)
def getItem(ID, course):
currentItem = []
table_name = "Menu" + course
query = "SELECT Item,Price,Description FROM {} WHERE ID = %s".format(table_name)
cur.execute(query, (ID,))
result = cur.fetchone()
currentItem.append(result[0] + ' (' + str(result[1]) + '$)')
currentItem.append(result[2])
return currentItem
def printItems(course):
cur.execute("select max(ID) from {}".format("Menu" + course))
n = cur.fetchone()
for i in range(1,n[0] + 1):
list.insert(tk.END,'\n\n' + str(i) + "." + getItem(i,course)[0] + '\n' + getItem(i,course)[1])
list.config(state='disabled',highlightthickness=0)
#Title And Buttons
head = tk.Label(text = "Menu",font = ("Garamond",40),bg = 'black')
head.grid(column = 0,row = 0,columnspan = 4, sticky = 'N', pady = 10)
app = tk.Button(text="Entrees",width = 12,height = 2,command=printItems('Entree'))
main = tk.Button(text="Mains",width = 12,height = 2,command=printItems('Main'))
des = tk.Button(text="Desserts",width = 12,height = 2)
deal = tk.Button(text="Deals",width = 12,height = 2)
app.grid(column = 0, row = 1,padx = 8)
main.grid(column = 1, row = 1,padx = 8)
des.grid(column = 2, row = 1,padx = 8)
deal.grid(column = 3, row = 1,padx = 8)
w.grid_columnconfigure((0,1,2,3), weight=1)
w.mainloop()

I think the problem lies with usage of .insert for the text widget. What can I use alternatively?

> With tkinter text widget, how to use .insert so that it overwrites the entire text content?

Use it in combination with the delete method. First delete everything, then insert the new text.

Or, use the replace method which does exactly what it says. It replaces a range of text with some new text. You must give it both a starting and ending index of the range of text to delete, and also include the new text.