如何修复python中的零除错误？

Question

import os

import re

import sys

sys.stdout=open('f1.txt','w')

from collections import Counter

from glob import glob

def removegarbage(text):

    text=re.sub(r'\W+',' ',text)

    text=text.lower()

    return text

folderpath='d:/induvidual-articles'

counter=Counter()

filepaths = glob(os.path.join(folderpath,'*.txt'))

num_files = len(filepaths)

with open('topics.txt','r') as filehandle:

    lines = filehandle.read()

    words = removegarbage(lines).split()

   counter.update(words)

for word, count in counter.most_common():

    probability=count//num_files

    print('{}  {} {}'.format(word,count,probability))

我得到零除法错误：行概率= count // num_files的浮点除以零

我该如何纠正？

我需要我的输出格式为：单词，计数，概率

Answer 1

您的num_files变量为0。检查是否folderpath='d:/induvidual-articles'正确（induvidual拼写错误，但原始目录可能类似地拼写错误）。

Answer 2

检查路径是否存在。如果是这样，请检查目录是否包含至少1个.txt文件。并将整个for循环移至if块内if num_files:    for word, count in counter.most_common():       ...else:   print "No text files found!"