SyntaxError: Generator expression must be parenthesized

输入：
python manage.py runserver
报错：
Unhandled exception in thread started by <function check_errors..wrapper at 0x0000026092EEBC80>
Traceback (most recent call last):
File "D:\three\python\python37\lib\site-packages\django\utils\autoreload.py", line 227, in wrapper
fn(*args, *kwargs)
File "D:\three\python\python37\lib\site-packages\django\core\management\commands\runserver.py", line 117, in inner_run
autoreload.raise_last_exception()
File "D:\three\python\python37\lib\site-packages\django\utils\autoreload.py", line 250, in raise_last_exception
six.reraise(exception)
File "D:\three\python\python37\lib\site-packages\django\utils\six.py", line 685, in reraise
raise value.with_traceback(tb)
File "D:\three\python\python37\lib\site-packages\django\utils\autoreload.py", line 227, in wrapper
fn(*args, **kwargs)
File "D:\three\python\python37\lib\site-packages\django_init.py", line 27, in setup
apps.populate(settings.INSTALLED_APPS)
File "D:\three\python\python37\lib\site-packages\django\apps\registry.py", line 85, in populate
app_config = AppConfig.create(entry)
File "D:\three\python\python37\lib\site-packages\django\apps\config.py", line 94, in create
module = import_module(entry)
File "D:\three\python\python37\lib\importlib_init_.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "", line 1006, in _gcd_import
File "", line 983, in _find_and_load
File "", line 967, in _find_and_load_unlocked
File "", line 677, in _load_unlocked
File "", line 728, in exec_module
File "", line 219, in call_with_frames_removed
File "D:\three\python\python37\lib\site-packages\django\contrib\admin_init.py", line 4, in
from django.contrib.admin.filters import (
File "D:\three\python\python37\lib\site-packages\django\contrib\admin\filters.py", line 10, in
from django.contrib.admin.options import IncorrectLookupParameters
File "D:\three\python\python37\lib\site-packages\django\contrib\admin\options.py", line 12, in
from django.contrib.admin import helpers, widgets
File "D:\three\python\python37\lib\site-packages\django\contrib\admin\widgets.py", line 151
'%s=%s' % (k, v) for k, v in params.items(),
^
SyntaxError: Generator expression must be parenthesized