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import re
_no_period_re = re.compile(r'(No[.])(?=[ ]?[0-9])')
_percent_re = re.compile(r'([ ]?[%])')
_half_re = re.compile('([0-9]½)|(½)')
_url_re = re.compile(r'([a-zA-Z])\.(com|gov|org)')
# List of (regular expression, replacement) pairs for abbreviations:
_abbreviations = [(re.compile('\\b%s\\.' % x[0], re.IGNORECASE), x[1]) for x in [
('mrs', 'misess'),
('ms', 'miss'),
('mr', 'mister'),
('dr', 'doctor'),
('st', 'saint'),
('co', 'company'),
('jr', 'junior'),
('maj', 'major'),
('gen', 'general'),
('drs', 'doctors'),
('rev', 'reverend'),
('lt', 'lieutenant'),
('hon', 'honorable'),
('sgt', 'sergeant'),
('capt', 'captain'),
('esq', 'esquire'),
('ltd', 'limited'),
('col', 'colonel'),
('ft', 'fort'),
('sen', 'senator'),
('etc', 'et cetera'),
]]
def _expand_no_period(m):
word = m.group(0)
if word[0] == 'N':
return 'Number'
return 'number'
def _expand_percent(m):
return ' percent'
def _expand_half(m):
word = m.group(1)
if word is None:
return 'half'
return word[0] + ' and a half'
def _expand_urls(m):
return f'{m.group(1)} dot {m.group(2)}'
def normalize_abbreviations(text):
text = re.sub(_no_period_re, _expand_no_period, text)
text = re.sub(_percent_re, _expand_percent, text)
text = re.sub(_half_re, _expand_half, text)
text = re.sub('&', ' and ', text)
text = re.sub('@', ' at ', text)
text = re.sub(_url_re, _expand_urls, text)
for regex, replacement in _abbreviations:
text = re.sub(regex, replacement, text)
return text
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