Getting an odd error when trying to do this

#! /usr/bin/env python3

from collections import OrderedDict
import datetime
from peewee import *

db = SqliteDatabase('diary.db')

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

    class Meta:
        database = db

def initialize():
    """ Create the database and 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: clear').lower().strip()

        if choice in menu:
            menu[choice]()


def add_entry():
    """Add an entry."""


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()

Enter 'q' to quit
a) str(object='') -> str
str(bytes_or_buffer[, encoding[, errors]]) -> str

Create a new string object from the given object. If encoding or
errors is specified, then the object must expose a data buffer
that will be decoded using the given encoding and error handler.
Otherwise, returns the result of object.__str__() (if defined)
or repr(object).
encoding defaults to sys.getdefaultencoding().
errors defaults to 'strict'.
v) str(object='') -> str
str(bytes_or_buffer[, encoding[, errors]]) -> str