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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def normalize_hamza(word):
 """Standardize the Hamzat into one form of hamza, replace Madda by hamza and alef. Replace the LamAlefs by simplified letters. @param word: arabic text. @type word: unicode. @return: return a converted text. @rtype: unicode. """

    if word.startswith(ALEF_MADDA):
        if len(word) >= 3 and (word[1] not in HARAKAT) and \
                (word[2] == SHADDA or len(word) == 3):
            word = HAMZA + ALEF + word[1:]
        else:
            word = HAMZA + HAMZA + word[1:]
    # convert all Hamza from into one form
    word = word.replace(ALEF_MADDA, HAMZA + HAMZA)
    word = HAMZAT_PATTERN.sub(HAMZA, word)
    return word