【python】djangoと統合したchatterbotにmecabを導入したい

前提

python勉強中の者です。
https://zerofromlight.com/blogs/detail/93/#_4
上記のサイト様を参考にchatterbotのwebアプリを作成しています。
webアプリ化は成功したため、次の段階としてpythonの自然言語処理を行うライブラリであるmecabを導入したいと考えています。
https://zerofromlight.com/blogs/detail/55/
上記のサイト様の別の記事を見てpythonにインポートすることは出来ましたが、djangoと統合したchatterbotに同じようにインポートするとエラーが出てしまいます。

djangoと統合したchatterbotにはインポート出来ないのでしょうか？

発生している問題・エラーメッセージ

ModuleNotFoundError: No module named 'my_tagging'

該当のソースコード

my_tagging.py

from chatterbot import languages
import MeCab

class MecabTagger(object):
    def __init__(self, language=None):
        self.language = language
        if self.language == languages.ENG:
            self.language = '-Owakati'

        self.tagger = MeCab.Tagger(self.language)

    def get_text_index_string(self, text):
        bigram_pairs = []

        document = self.tagger.parseToNode(text).next

        if document:
            tokens = []
            while document.next:
                feature = document.feature.split(',')
                if feature[0] in ['補助記号', '記号']: 
                    pass
                else:
                    tokens.append(feature[0]) # 名詞を追加
                    tokens.append(feature[-1]) # カナ文字を追加
                document = document.next

            for index in range(2, len(tokens), 2):
                bigram_pairs.append('{}:{}'.format(
                    tokens[index - 1],
                    tokens[index]
                ))

        if not bigram_pairs:
            document = self.tagger.parseToNode(text).next
            while document.next:
                feature = document.feature.split(',')
                if feature[0] in ['補助記号', '記号']:
                    pass
                else:
                    bigram_pairs.append(
                            feature[-1]
                    )
                document = document.next

        return ' '.join(bigram_pairs)

setting.py

from pathlib import Path

# Build paths inside the project like this: BASE_DIR / 'subdir'.
BASE_DIR = Path(__file__).resolve().parent.parent


# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/3.2/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = 'django-insecure-nfg1ho@h3q5%t$u&$vge00oqbc*@^5vz)j*(%(r977gb&kq@k%'

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True

ALLOWED_HOSTS = []


# Application definition

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'prototype',
    'chatterbot.ext.django_chatterbot',
]

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
]

ROOT_URLCONF = 'sample_bot.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [],
        'APP_DIRS': True,
        'OPTIONS': {
            'context_processors': [
                'django.template.context_processors.debug',
                'django.template.context_processors.request',
                'django.contrib.auth.context_processors.auth',
                'django.contrib.messages.context_processors.messages',
            ],
        },
    },
]

WSGI_APPLICATION = 'sample_bot.wsgi.application'


# Database
# https://docs.djangoproject.com/en/3.2/ref/settings/#databases

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': BASE_DIR / 'db.sqlite3',
    }
}


# Password validation
# https://docs.djangoproject.com/en/3.2/ref/settings/#auth-password-validators

AUTH_PASSWORD_VALIDATORS = [
    {
        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
    },
]


# Internationalization
# https://docs.djangoproject.com/en/3.2/topics/i18n/

LANGUAGE_CODE = 'ja'

TIME_ZONE = 'Asia/Tokyo'

USE_I18N = True

USE_L10N = True

USE_TZ = True

# ChatterBotパラメータ

from . import languages
from my_tagging import MecabTagger

CHATTERBOT = {
        'name': 'Iris', # チャットボットの名前
        'tagger_language': languages.JPN,
        'tagger':mecabtagger
}


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/3.2/howto/static-files/

STATIC_URL = '/static/'

# Default primary key field type
# https://docs.djangoproject.com/en/3.2/ref/settings/#default-auto-field

DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'