how to save and retrieve pickle file code example

Example 1: save thing in pickle python

import pickle

a = {'hello': 'world'}

with open('filename.pickle', 'wb') as handle:
    pickle.dump(a, handle, protocol=pickle.HIGHEST_PROTOCOL)

with open('filename.pickle', 'rb') as handle:
    b = pickle.load(handle)

print a == b

Example 2: pickle load

with open('filename', 'rb') as f:
    x = pickle.load(f)

Example 3: save a file as a pickle

with open('mypickle.pickle', 'wb') as f:
    pickle.dump(some_obj, f)

# note that this will overwrite any existing file
# in the current working directory called 'mypickle.pickle'

Example 4: how to save a pickle file

Python 3.4.1 (default, May 21 2014, 12:39:51) 
[GCC 4.2.1 Compatible Apple LLVM 5.0 (clang-500.2.79)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> mylist = ['I wish to complain about this parrot what I purchased not half an hour ago from this very boutique.', "Oh yes, the, uh, the Norwegian Blue...What's,uh...What's wrong with it?", "I'll tell you what's wrong with it, my lad. 'E's dead, that's what's wrong with it!", "No, no, 'e's uh,...he's resting."]
>>> 
>>> import pickle
>>> 
>>> with open('parrot.pkl', 'wb') as f:
...   pickle.dump(mylist, f)
... 
>>>  with open('parrot.pkl', 'wb') as f:
...   new_list = pickle.load(mylist, f)