# -*- 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)