def demo():
"""
A demonstration that shows the output of several different
tokenizers on the same string.
"""
from nodebox_linguistics_extended.parser.nltk_lite import tokenize
# Define the test string.
s = "Good muffins cost $3.88\nin New York. Please buy me\ntwo of them.\n\nThanks."
print 'Input text:'
print ` s `
print
print 'Tokenize using whitespace:'
_display(tokenize.whitespace(s))
print
print 'Tokenize sequences of alphanumeric characters:'
_display(tokenize.regexp(s, pattern=r'\w+', gaps=False))
print
print 'Tokenize sequences of letters and sequences of nonletters:'
_display(tokenize.wordpunct(s))
print
print 'Tokenize by lines:'
_display(tokenize.line(s))
print
print 'Tokenize by blank lines:'
_display(tokenize.blankline(s))
print
print 'A simple sentence tokenizer:'
_display(tokenize.regexp(s, pattern=r'\.(\s+|$)', gaps=True))
print
def raw(files = items):
if type(files) is str: files = (files,)
for file in files:
path = os.path.join(get_basedir(), "state_union", file + ".txt")
f = open(path)
preamble = True
text = f.read()
for t in tokenize.wordpunct(text):
yield t
def raw(files=items):
if type(files) is str: files = (files, )
for file in files:
path = os.path.join(get_basedir(), "gutenberg", file + ".txt")
f = open(path)
preamble = True
for line in f.readlines():
if not preamble:
for t in tokenize.wordpunct(line):
yield t
if line[:5] == '*END*':
preamble = False