[Python] python tkinter append list

I am an amateur python programer with 2 months of experience. I am trying to write a GUI to-do list through tkinter. The actual placement of the buttons are not important. I can play around with those after. I need some help with displaying the appended item to the list. In the program, it updates well on the digit, but it won't print onto the list. I double checked it on the console and it says "tkinter.StringVar object at 0x102fa4048" but didn't update the actual list. What I need help is how can I update the list Main_Q on my the label column? Much appreciate some direction and coding help. Thanks.

Main_Q =["read","clean dishes", "wash car"]


from tkinter import*
root=Tk(className="total tasks in the Q")


#formula

def update():
global Main_Q
a=len(Main_Q)
num.set(a)

def add2list():
Main_Q.append(name)
a=len(Main_Q)
num.set(a)
print (Main_Q)


#output

num=StringVar()
y=Label(root, textvariable=num).grid(row=0, column=1)

#input

name=StringVar()
b=Entry(root, textvariable=name).grid(row=7,column=0)


#buttons
z=Button(root, text="update", command=update).grid(row=7, column=2)
add2list=Button(root,text="add", command=add2list).grid(row=7,
column=1)


r = 0
for c in Main_Q:
Label(text=c, relief=RIDGE,width=15).grid(row=r,column=0)
r = r + 1

root.mainloop()

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