Getting a name error when trying to input a string [duplicate]

import pickle
import os
import time

class Person():
    def __init__(self, number, address):
        self.number = number
        self.address = address


def save():
    with open('mydict.pickle', 'wb') as f:
        pickle.dump(mydict, f)        

mydict = {}
mydict['Avi'] = ['347-000-0000', 'Oceanview']
mydict['Alan'] = ['347-000-0000', 'Brighton']
mydict['Frank'] = ['718-000-0000', 'Brighton']

print('add a name to the database.')
name = input('Name:')
number = input('Digits:')
address = input('Address:')
mydict[name] = [number, address]

-------------------------------------------------------

ERROR: If I try to add a name to the database I get a nameerror. NameError: name ‘alan’ is not defined. What’s weird is that strings won’t work but numbers will. Sorry if my question is unclear.

Traceback (most recent call last):
  File "C:/Python33/ss", line 21, in <module>
    name = input('Name:')
  File "<string>", line 1, in <module>
NameError: name 'alan' is not defined
>>>