CodePattern/A 代码模式/11 基础结构/函数/2 临时变量传递.py

import re
from cppy.cp_util import *


def extractwords(str_data):
    pattern = re.compile('[\W_]+')
    word_list = pattern.sub(' ', str_data).lower().split()
    stop_words = get_stopwords()    
    return [w for w in word_list if not w in stop_words]

def frequencies(word_list):    
    word_freqs = {}  
    for word in word_list:  
        word_freqs[word] = word_freqs.get(word, 0) + 1    
    return word_freqs

def sort(word_freq):    
    return sorted( word_freq.items(), key=lambda x: x[1], reverse=True )


if __name__ == "__main__":
    txtcontent = read_file( testfilepath )
    word_list = extractwords( txtcontent )
    word_freqs = frequencies( word_list )     
    word_sorts = sort ( word_freqs )
    for tf in word_sorts[:10]:
        print(tf[0], '-', tf[1])