完成计算文本文件字数的Python代码实例

本文实例讲述了Python实现统计文本文件字数的方法。分享给大家供大家参考，具体如下：

统计文本文件的字数，从当前目录下的file.txt取文件

# -*- coding: GBK -*-
import string
import sys
reload(sys)
def compareItems((w1,c1), (w2,c2)):
 if c1 > c2:
 return - 1
 elif c1 == c2:
 return cmp(w1, w2)
 else:
 return 1
def main():
 fname = "file.txt"
 try:
 text = open(fname,'r').read()
 text = string.lower(text)
 except:
 print "
file.txt is not exist!!! or There is a R/W error! "
 sys.exit()
 for ch in '!"#$%&()*+,-./:;<=>?@[\]^_`{|}~':
 text = string.replace(text, ch, ' ')
 words = string.split(text)
 counts = {}
 for w in words:
 counts[w] = counts.get(w,0) + 1
 n = input("
输入要统计的top单词数:")
 items = counts.items()
 items.sort(compareItems)
 max = len(items)
 print "
单词总计:" + str(len(words))
 print "单词净个数(已去重):" + str(max)
 print "
"
 if n > max:
 n = max
 for i in range(n):
 print "%-10s%5d" % items[i]
if name == 'main':
 main()

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