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33 lines
770 B
Python
33 lines
770 B
Python
#!/usr/bin/python
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# coding:utf8
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from mrjob.job import MRJob
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class MRWordCountUtility(MRJob):
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def __init__(self, *args, **kwargs):
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super(MRWordCountUtility, self).__init__(*args, **kwargs)
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self.chars = 0
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self.words = 0
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self.lines = 0
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def mapper(self, _, line):
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if False:
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yield # I'm a generator!
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self.chars += len(line) + 1 # +1 for newline
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self.words += sum(1 for word in line.split() if word.strip())
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self.lines += 1
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def mapper_final(self):
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yield('chars', self.chars)
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yield('words', self.words)
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yield('lines', self.lines)
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def reducer(self, key, values):
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yield(key, sum(values))
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if __name__ == '__main__':
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MRWordCountUtility.run()
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