How to set value in shelve

Question

I want to store dictionary in shelve and also want to put data in that. How can i do that?

import shelve

s = shelve.open("test")
s['flag'] = {}

Answer 1

You cannot edit values directly, so you have to update a copy and then reset it:

import shelve

s = shelve.open("test")
s['flag'] = {}
temp = s['flag']
temp['foo'] = 'bar'
s['flag'] = temp

you cannot do

s['flag']['foo'] = 'bar'

directly because s['flag'] returns a copy