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# -*- coding: utf-8 -*-
from collections import Counter
from cppy . cp_util import *
from multiprocessing . pool import ThreadPool
#
# 多线程
#
stop_words = get_stopwords ( )
def process_chunk ( chunk ) :
# 过滤停用词
words = [ w for w in chunk if ( not w in stop_words ) and len ( w ) > = 3 ]
return Counter ( words )
def merge_counts ( counts_list ) :
""" 合并多个Counter对象的总和 """
return sum ( counts_list , Counter ( ) )
def thread_function ( chunk , counts_list ) :
word_count = process_chunk ( chunk )
counts_list . append ( word_count )
@timing_decorator
def main ( ) :
# 读数据，
chunks = get_chunks ( testfilepath , 1000 )
# 线程池
pool = ThreadPool ( len ( chunks ) ) # 随意指定的线程数
counts_list = pool . map ( process_chunk , chunks )
pool . close ( )
pool . join ( )
# 合并计数
total_counts = merge_counts ( counts_list )
# 输出最高频的n个词
print_word_freqs ( total_counts . most_common ( 10 ) )
if __name__ == ' __main__ ' :
main ( )
