List app [extra credit] open and save

#!/usr/bin/env python3
#printing intro
#version 0.1 - Basic app, typing DONE will close and print the app
#version 1.0 - Everything is now in functions, added elif statements
#version 1.1 - Adding save and open function to the list app
import os
from subprocess import call
print("Welcome to the list app!")
def show_help():
     print('''To add an item into the list, type it in and hit return. For specific commands:
    DONE - This will print the list and quit the application
    SHOW - This will show the current list
    HELP - This will show this explination of commands
    SAVE - This will save the list into a text file of your choice
    OPEN - This will open a previous saved list''')

def show_list():
    print("Here is your list")
    for items in fulllist:
        print(items)

def add_to_list(listadd):
    fulllist.append(listadd)
    print("Adding {} to your list!  You now have {} items in your list".format(listadd, len(fulllist)))

def savlist():
     while True:
          confch = input("Do you want to save the list? We will put it into the app directory (y/n) ")
          if confch == "y":
               filesave = open('pyapp.txt', 'w')  
               print("Saving file now!")
               savl = str(fulllist)
               for items in savl:
                    filesave.write(items)

               filesave.close()
               print("File saved!")
               break
          elif confch == "n":
               continue
def openlst():
     readls = input("Do you want to open your previous list? (y/n)")
     if readls == "y":
          print("Opening list now!")
          filesave = open('pyapp.txt', 'r')
          filesave = filesave.replace("[", "" )
          filesave = filesave.replace("]", "" )
          for items in filesave:
               fulllist.read(items).split(",")

          filesave.close()
          print("List imported!")
     else:
          print("Not importing list, continue adding items!")

show_help()
#efining list
fulllist = []
#inputting items
while True:
    listadd = input("> ")
#quitting the app
    if listadd == "DONE":
        break
#showing the list 
    elif listadd == "SHOW":
        show_list()  
        continue
#help menu for the app
    elif listadd == "HELP":
        show_help()
        continue
    elif listadd == "SAVE":
          savlist()
          continue
    elif listadd == "OPEN":
          openlst()
          continue

    #adding items onto the list
    add_to_list(listadd)
#printing the list
show_list()