import string
def punc_func(exclude):
punc = r''
for char in string.punctuation:
if char not in exclude:
punc = punc + r'\%s' % char
return punc
digits = string.digits
letters = string.letters
literal_punc = punc_func("'")
dbl_quoted_punc = punc_func("\"")
strongem_punc = punc_func('*')
under_punc = punc_func('_<>')
phrase_delimiters = r'\s\.\,\?\/\!\&\(\)'
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