#coding=utf-8

import re

with open('aaa.txt','r',encoding="utf-8") as f:

    #data = f.read().decode('gbk').encode('utf-8')

    data = f.read()

    print(data)

    #str = re.sub(r'(\\u\d+)',"",data)

    #data = re.sub("[A-Za-z0-9\!\%\[\]\,\。]", "", data)

    #data = re.sub('[\W_+]', "", data)

    data = re.sub('[\u4E00-\u9FA5]',"", data)

    print(data)

import re

"""

python 3.5版本

正则匹配中文，固定形式：\u4E00-\u9FA5

"""

text = "aqweded***中国***xsa***日本***韩国"

regStr = ".*?([\u4E00-\u9FA5]+).*?"

aa = re.findall(regStr, text)

if aa:

    print(aa)

#coding=utf-8

import re

with open('aaa.txt','r',encoding="utf-8") as f:

    #data = f.read().decode('gbk').encode('utf-8')

    data = f.read()

    print(data)

    data = re.sub("[A-Za-z0-9\!\%\[\]\,\。\ ]", "", data)

    #data = re.sub('[\u4E00-\u9FA5]',"", data)

    print(data)

# -*- coding: utf-8 -*-

import re

#过滤掉除了中文以外的字符

str = "hello,world!!%[545]你好234世界。。。"

str = re.sub("[A-Za-z0-9\!\%\[\]\,\。]", "", str)

print(str)

 

#提取字符串里的中文，返回数组

pattern="[\u4e00-\u9fa5]+" 

regex = re.compile(pattern)

results =  regex.findall("adf中文adf发京东方")

print(results)