Here my actions for a or v is not responding

#!/usr/bin/env python3

import datetime
import sys
from collections import OrderedDict

from peewee import *

db = SqliteDatabase('dairy.db')

class Entry(Model):
    content = TextField()
    timestamp = DateTimeField(default= datetime.datetime.now)

    class Meta:
        database = db

def initialize():
    """Create the database and the table if they don't exist."""
    db.connect()
    db.create_tables([Entry], safe=True)


def menu_loop():
    """ Show the menu """
    choice = None

    while choice != "q":
        print("Enter q to quit !")
        for key, value in menu.items():
            print("{}) {}".format(key, value.__doc__))
        choice = input("Action: ").lower().strip()

    if choice in menu:
        menu[choice]()


def add_entry():
    """ Add an entry. """
    print("Enter your entry, press ctrl+D when finished.")
    data = sys.stdin.read().strip()

    if data:
        if input("Save entry ? [Yn] ").lower() != "n":
            Entry.create(content=data)
            print("Saved successfully")


def view_entries():
    """ view previous entries."""

def delete_entry(entry):
    """ Delete an entry """


menu = OrderedDict([
     ("a", add_entry),
     ("v", view_entries),
])


if __name__ == "__main__":
    initialize()
    menu_loop()