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string to OrderedDict conversion in python
OrderedDict([(7, 0), (6, 1), (5, 2), (4, 3)])

myfile = open('filename.txt','r')
mydict = myfile.read()

<class 'collections.OrderedDict'>

import cPickle as pickle

# store:
with open("filename.pickle", "w") as fp:
    pickle.dump(ordered_dict, fp)

# read:
with open("filename.pickle") as fp:
    ordered_dict = pickle.load(fp)

type(ordered_dict) # <class 'collections.OrderedDict'>

import re
import ast
import collections

with open(filename.txt) as file:
    line = next(file)
    values = re.search(r"OrderedDict((.*))", line).group(1)
    mydict = collections.OrderedDict(ast.literal_eval(values))