Day12 为什么返回None?(错误点在stats_text)

#training.py

import requests
from wxpy import *
from pyquery import PyQuery
# 初始化机器人，扫码登陆
bot = Bot(cache_path=True)
@bot.register(Friend,SHARING)#对朋友发的sharing操作
def reply(msg):#注册函数:自动回复
    print(msg)
    #提取sharing正文
    response= requests.get(msg.url)
    document = PyQuery(response.text) 
    content = document('#js_content').text()
    from stats_word_d12 import stats_text
    result=str(stats_text(content))#调用模板,统计
    return result
embed()

#stats.py

import collections
import jieba
import re#导入正则表达式模块
def stats_text_cn(text):
    #提取中文字符串
    text= re.sub("[^\u4e00-\u9fa5]", "", text)#中文汉字unicode范围
    text=jieba.cut(text)#jieba精准模式分词
    found=[]
    for x in text:
        if len(x)>=2:
            found.append(x)
    return collections.Counter(found).most_common(10)

def stats_text_en(text):
    text= text.lower()
    text=re.sub("[^\\u0061-\u007a]", " ", text)
    text=text.split()   
    return collections.Counter(text).most_common(10)

def stats_text(text):
    stats_text_en(text)
    stats_text_cn(text)

@realcaiying 不发issue不告诉我的naughty教练

Start with stats.py, then trace how stats_text is called from training.py. Check what value stats_text produces after invoking the English and Chinese helpers, and verify in the Day12 training flow that the returned result is displayed instead of None.