70 lines
2.1 KiB
Python
70 lines
2.1 KiB
Python
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import inflect
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import re
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_inflect = inflect.engine()
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_comma_number_re = re.compile(r'([0-9][0-9\,]+[0-9])')
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_decimal_number_re = re.compile(r'([0-9]+\.[0-9]+)')
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_pounds_re = re.compile(r'£([0-9\,]*[0-9]+)')
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_dollars_re = re.compile(r'\$([0-9\.\,]*[0-9]+)')
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_ordinal_re = re.compile(r'[0-9]+(st|nd|rd|th)')
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_number_re = re.compile(r'[0-9]+')
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def _remove_commas(m):
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return m.group(1).replace(',', '')
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def _expand_decimal_point(m):
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return m.group(1).replace('.', ' point ')
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def _expand_dollars(m):
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match = m.group(1)
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parts = match.split('.')
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if len(parts) > 2:
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return match + ' dollars' # Unexpected format
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dollars = int(parts[0]) if parts[0] else 0
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cents = int(parts[1]) if len(parts) > 1 and parts[1] else 0
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if dollars and cents:
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dollar_unit = 'dollar' if dollars == 1 else 'dollars'
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cent_unit = 'cent' if cents == 1 else 'cents'
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return '%s %s, %s %s' % (dollars, dollar_unit, cents, cent_unit)
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elif dollars:
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dollar_unit = 'dollar' if dollars == 1 else 'dollars'
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return '%s %s' % (dollars, dollar_unit)
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elif cents:
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cent_unit = 'cent' if cents == 1 else 'cents'
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return '%s %s' % (cents, cent_unit)
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else:
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return 'zero dollars'
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def _expand_ordinal(m):
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return _inflect.number_to_words(m.group(0))
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def _expand_number(m):
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num = int(m.group(0))
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if num > 1000 and num < 3000:
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if num == 2000:
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return 'two thousand'
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elif num > 2000 and num < 2010:
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return 'two thousand ' + _inflect.number_to_words(num % 100)
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elif num % 100 == 0:
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return _inflect.number_to_words(num // 100) + ' hundred'
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else:
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return _inflect.number_to_words(num, andword='', zero='oh', group=2).replace(', ', ' ')
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else:
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return _inflect.number_to_words(num, andword='')
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def normalize_numbers(text):
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text = re.sub(_comma_number_re, _remove_commas, text)
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text = re.sub(_pounds_re, r'\1 pounds', text)
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text = re.sub(_dollars_re, _expand_dollars, text)
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text = re.sub(_decimal_number_re, _expand_decimal_point, text)
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text = re.sub(_ordinal_re, _expand_ordinal, text)
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text = re.sub(_number_re, _expand_number, text)
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return text
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