python实现统计汉字/英文单词数的正则表达式
(编辑:jimmy 日期: 2024/11/28 浏览:3 次 )
思路
"(?x) (?: [\w-]+ | [\x80-\xff]{3} )"获得utf-8文档中的英文单词和汉字的列表。
"codetitle">复制代码 代码如下:
#!/usr/bin/python
# -*- coding: utf-8 -*-
#
#author: rex
#blog: http://iregex.org
#filename counter.py
#created: Mon Sep 20 21:00:52 2010
#desc: convert .py file to html with VIM.
import sys
import re
from operator import itemgetter
def readfile(f):
with file(f,"r") as pFile:
return pFile.read()
def divide(c, regex):
#the regex below is only valid for utf8 coding
return regex.findall(c)
def update_dict(di,li):
for i in li:
if di.has_key(i):
di[i]+=1
else:
di[i]=1
return di
def main():
#receive files from bash
files=sys.argv[1:]
#regex compile only once
regex=re.compile("(?x) (?: [\w-]+ | [\x80-\xff]{3} )")
dict={}
#get all words from files
for f in files:
words=divide(readfile(f), regex)
dict=update_dict(dict, words)
#sort dictionary by value
#dict is now a list.
dict=sorted(dict.items(), key=itemgetter(1), reverse=True)
#output to standard-output
for i in dict:
print i[0], i[1]
if __name__=='__main__':
main()
Tips
由于使用了files=sys.argv[1:] 来接收参数,因此./counter.py file1 file2 ...可以将参数指定的文件的词频累加计算输出。
可以自定义该程序。例如,
"codetitle">复制代码 代码如下:
regex=re.compile("(?x) ( [\w-]+ | [\x80-\xff]{3} )")
words=[w for w in regex.split(line) if w]
这样得到的列表是包含分隔符在内的单词列表,方便于以后对全文分词再做操作。
"<[^>]+","",content),这样的结果对于某些文档更精确。
"(?x) (?: [\w-]+ | [\x80-\xff]{3} )"获得utf-8文档中的英文单词和汉字的列表。
"codetitle">复制代码 代码如下:
#!/usr/bin/python
# -*- coding: utf-8 -*-
#
#author: rex
#blog: http://iregex.org
#filename counter.py
#created: Mon Sep 20 21:00:52 2010
#desc: convert .py file to html with VIM.
import sys
import re
from operator import itemgetter
def readfile(f):
with file(f,"r") as pFile:
return pFile.read()
def divide(c, regex):
#the regex below is only valid for utf8 coding
return regex.findall(c)
def update_dict(di,li):
for i in li:
if di.has_key(i):
di[i]+=1
else:
di[i]=1
return di
def main():
#receive files from bash
files=sys.argv[1:]
#regex compile only once
regex=re.compile("(?x) (?: [\w-]+ | [\x80-\xff]{3} )")
dict={}
#get all words from files
for f in files:
words=divide(readfile(f), regex)
dict=update_dict(dict, words)
#sort dictionary by value
#dict is now a list.
dict=sorted(dict.items(), key=itemgetter(1), reverse=True)
#output to standard-output
for i in dict:
print i[0], i[1]
if __name__=='__main__':
main()
Tips
由于使用了files=sys.argv[1:] 来接收参数,因此./counter.py file1 file2 ...可以将参数指定的文件的词频累加计算输出。
可以自定义该程序。例如,
"codetitle">复制代码 代码如下:
regex=re.compile("(?x) ( [\w-]+ | [\x80-\xff]{3} )")
words=[w for w in regex.split(line) if w]
这样得到的列表是包含分隔符在内的单词列表,方便于以后对全文分词再做操作。
"<[^>]+","",content),这样的结果对于某些文档更精确。
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