38 lines
752 B
Python
38 lines
752 B
Python
"""
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Sentence: iterate over words using the Iterator Pattern, take #2
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WARNING: the Iterator Pattern is much simpler in idiomatic Python;
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see: sentence_gen*.py.
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"""
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import re
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import reprlib
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RE_WORD = re.compile('\w+')
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class Sentence:
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def __init__(self, text):
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self.text = text
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def __repr__(self):
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return 'Sentence(%s)' % reprlib.repr(self.text)
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def __iter__(self):
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word_iter = RE_WORD.finditer(self.text) # <1>
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return SentenceIter(word_iter) # <2>
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class SentenceIter():
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def __init__(self, word_iter):
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self.word_iter = word_iter # <3>
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def __next__(self):
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match = next(self.word_iter) # <4>
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return match.group() # <5>
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def __iter__(self):
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return self
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