django引用自定义的模块，迁移时提示找不到

Question

使用django编写项目时，引用自定义模块，在迁移时，提示找不到模块

代码如下

 from django.db import models
import sys

from perceptor.teachers.models import Teachers
sys.path.append('I:\\jiayong\\perceptor\\teachers\\models.py')

运行结果及报错内容

(venv) I:\jiayong\perceptor>python manage.py makemigrations
Traceback (most recent call last):
  File "manage.py", line 22, in <module>
    main()
  File "manage.py", line 18, in main
    execute_from_command_line(sys.argv)
  File "I:\jiayong\venv\lib\site-packages\django\core\management\__init__.py", line 419, in execute_from_command_line
    utility.execute()
  File "I:\jiayong\venv\lib\site-packages\django\core\management\__init__.py", line 395, in execute
    django.setup()
  File "I:\jiayong\venv\lib\site-packages\django\__init__.py", line 24, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "I:\jiayong\venv\lib\site-packages\django\apps\registry.py", line 114, in populate
    app_config.import_models()
  File "I:\jiayong\venv\lib\site-packages\django\apps\config.py", line 301, in import_models
    self.models_module = import_module(models_module_name)
  File "I:\python3.7.7\lib\importlib\__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "I:\jiayong\perceptor\course\models.py", line 4, in <module>
    from perceptor.teachers.models import Teachers
ModuleNotFoundError: No module named 'perceptor'

我的解答思路和尝试过的方法
尝试用sys更改路径，仍提示perceptor（文件名）找不到
尝试更改项目名，也提示perceptor（文件名）找不到
CTRL加左键点击perceptor可以找到相应的文件，点击Teachers可以找到对应的类

我想要达到的结果
可以正确迁移，生成数据库表

Answer 1

实际上是找不到perceptor模块
可以改成这样

sys.path.append('I:\\jiayong')
from perceptor.teachers.models import Teachers