Getting a typeError error in django project

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I created a virtual environment for my new project, installed django and started the new project. However, whenever i run a line of code with manage.py i get this long error.

PS D:\My stuff\Website development\Isow website\isow> python manage.py makemigrations
No changes detected
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 "C:\Users\rahma\AppData\Local\Programs\Python\Python37\lib\site-packages\django\core\management\__init__.py", line 381, in execute_from_command_line
    utility.execute()
  File "C:\Users\rahma\AppData\Local\Programs\Python\Python37\lib\site-packages\django\core\management\__init__.py", line 375, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "C:\Users\rahma\AppData\Local\Programs\Python\Python37\lib\site-packages\django\core\management\base.py", line 336, in run_from_argv
    connections.close_all()
  File "C:\Users\rahma\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\utils.py", line 224, in close_all
    connection.close()
  File "C:\Users\rahma\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\backends\sqlite3\base.py", line 248, in close
    if not self.is_in_memory_db():
  File "C:\Users\rahma\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\backends\sqlite3\base.py", line 367, in is_in_memory_db
    return self.creation.is_in_memory_db(self.settings_dict['NAME'])
  File "C:\Users\rahma\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\backends\sqlite3\creation.py", line 12, in is_in_memory_db
    return database_name == ':memory:' or 'mode=memory' in database_name
TypeError: argument of type 'WindowsPath' is not iterable

Database Entry:

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

It does seem NAME is being converted to pathlib.Path (WindowsPath) object instead of string which then cannot be used in Django in same way as os.path expects strings (Not 100% sure as did not investigate in depth)

So casting in string would be appropriate

'NAME': str(os.path.join(BASE_DIR, "db.sqlite3"))

Make sure you really execute your command in the venv (you should see (venv))

If you are then as @iklinac said, this should fixe your issue:

'NAME': str(os.path.join(BASE_DIR, "db.sqlite3"))

Also, for Django>=3.1, the path module is included in place of the os module. Therefore, use:

'NAME': str(BASE_DIR / 'db.sqlite3')

So, DB sqlite3 settings will look like this in settings.py.

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