# The first three functions manually write/read a dictionary
# to a file using the format of one key/value pair per line
# having form key <tab> value.
# It uses looping and precise manipulation to make it all work.
def saveIt(dictionary, filename="myWords.txt"):
    f = open(filename, "w")
    for pair in dictionary.items():
        print(pair)
        key = pair[0]
        value = pair[1]
        # print(key + "\t" + value + "\n")
        f.write(key + "\t" + value + "\n")
    f.close()

def loadIt(filename="myWords.txt"):
    f = open(filename, "r")
    dictionary = {}
    for line in f.readlines():
        splitUp = line.split()
        dictionary[splitUp[0]] = splitUp[1]
    f.close()
    return dictionary

def testIt():
    dictionary = {"cat":"dog", "hi":"bye"}
    print(dictionary)
    saveIt(dictionary, "newFileName.txt")
    print(dictionary)
    dictionary = "gone!"
    print(dictionary)
    dictionary = loadIt("newFileName.txt")
    print(dictionary)


# This second set of three functions uses almost no logic.
# Instead it relies on knowing how to use the pickle module of Python 3.
def saveItUsingPickleModule(dictionary, filename="testPickle.txt"):
    # You can look at the resultant file on your harddrive, but
    # it will appear to have strange characters in it.  That's
    # because it is a binary file, and not an ascii file.
    import pickle
    f = open(filename, "wb")
    pickle.dump(dictionary, f)
    f.close()
    
def loadItUsingPickleModule(filename="testPickle.txt"):
    import pickle
    f = open(filename, "rb")
    dictionary = pickle.load(f)
    f.close()
    return dictionary

def testItPickled():
    dictionary = {"cat":"dog", "hi":"bye"}
    print(dictionary)
    
    saveItUsingPickleModule(dictionary)

    print(dictionary)
    dictionary = "gone!"
    print(dictionary)

    dictionary = loadItUsingPickleModule()

    print(dictionary)