Store a dictionary in a file for later retrieval

Question

I\'ve had a search around but can\'t find anything regarding this...

I\'m looking for a way to save a dictionary to file and then later be able to load it back into

Answer 1

Python has the shelve module for this. It can store many objects in a file that can be opened up later and read in as objects, but it's operating system-dependent.

import shelve

dict1 = #dictionary
dict2 = #dictionary

#flags: 
#   c = create new shelf; this can't overwrite an old one, so delete the old one first
#   r = read
#   w = write; you can append to an old shelf
shelf = shelve.open("filename", flag="c")
shelf['key1'] = dict1
shelf['key2'] = dict2

shelf.close()

#reading:
shelf = shelve.open("filename", flag='r')
for key in shelf.keys():
    newdict = shelf[key]
    #do something with it

shelf.close()