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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 get_frequency_dict(lang, wordlist='best', match_cutoff=30):
 """ Get a word frequency list as a dictionary, mapping tokens to frequencies as floating-point probabilities. """

    freqs = {}
    pack = get_frequency_list(lang, wordlist, match_cutoff)
    for index, bucket in enumerate(pack):
        freq = cB_to_freq(-index)
        for word in bucket:
            freqs[word] = freq
    return freqs