Python AttributeError: ‘dict’ object has no attribute ‘append’

I am creating a loop in order to append continuously values from user input to a dictionary but i am getting this error:

AttributeError: 'dict' object has no attribute 'append'

This is my code so far:

    for index, elem in enumerate(main_feeds):
        print(index,":",elem)
        temp_list = index,":",elem
    li = {}
    print_user_areas(li)

    while True:
        n = (input('\nGive number: '))


        if n == "":
          break
        else:
             if n.isdigit():
               n=int(n)
               print('\n')
               print (main_feeds[n])

               temp = main_feeds[n]
               for item in user:


                  user['areas'].append[temp]

Any ideas?