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

import csv

import re

csvfile = 'weibo.csv'

def columns_data(path, column):

    columns_data = ''

    csvfile = open(path, 'r', encoding='utf-8')

    DicReader = csv.DictReader(csvfile)

    for row in DicReader:

        columns_data = columns_data+row.get(column)

    return columns_data

comments = columns_data(csvfile, 'comment')

print(comments)

pattern = re.compile(r'[\u4e00-\u9fa5]+')

filterdata = re.findall(pattern, comments)

print(filterdata)

cleaned_comments = ''.join(filterdata)

print(cleaned_comments)