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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_numwords():
 """Convert number words to integers in a given text."""

    numwords = {'and': (1, 0), 'a': (1, 1), 'an': (1, 1)}

    for idx, word in enumerate(UNITS):
        numwords[word] = (1, idx)
    for idx, word in enumerate(TENS):
        numwords[word] = (1, idx * 10)
    for idx, word in enumerate(SCALES):
        numwords[word] = (10 ** (idx * 3 or 2), 0)

    all_numbers = ur'|'.join(ur'\b%s\b' % i for i in numwords.keys() if i)

    return all_numbers, numwords