runserver或inspectdb時報錯SyntaxError: Generator expression must be parenthesized

錯誤信息

PS D:\parttime\python\django\guanxiangzhiji> python manage.py inspectdb
Traceback (most recent call last):
  File "manage.py", line 21, in <module>
    main()
  File "manage.py", line 17, in main
    execute_from_command_line(sys.argv)
  File "D:\app\anaconda\lib\site-packages\django\core\management\__init__.py", line 363, in execute_from_command_line
    utility.execute()
  File "D:\app\anaconda\lib\site-packages\django\core\management\__init__.py", line 337, in execute
    django.setup()
  File "D:\app\anaconda\lib\site-packages\django\__init__.py", line 27, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "D:\app\anaconda\lib\site-packages\django\apps\registry.py", line 85, in populate
    app_config = AppConfig.create(entry)
  File "D:\app\anaconda\lib\site-packages\django\apps\config.py", line 94, in create
    module = import_module(entry)
  File "D:\app\anaconda\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 "D:\app\anaconda\lib\site-packages\django\contrib\admin\__init__.py", line 4, in <module>
    from django.contrib.admin.filters import (
  File "D:\app\anaconda\lib\site-packages\django\contrib\admin\filters.py", line 10, in <module>
    from django.contrib.admin.options import IncorrectLookupParameters
  File "D:\app\anaconda\lib\site-packages\django\contrib\admin\options.py", line 12, in <module>
    from django.contrib.admin import helpers, widgets
  File "D:\app\anaconda\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

原因分析

django1.11版本與python3.7語法衝突（django版本低了）

解決方案

網上有很多解決方案，比如網上一個貼主是1.11.15版本報了同樣的錯，大部分帖子是讓改widgets.py的源代碼，去掉行尾的逗號。
此法可行，但個人不建議修改源碼，這裏推薦另外一個解決方案：
升級django，如果要保持1.X版本，可以升級到1.11.22，同樣是1.11版本，在1.11.17及以上版本已經兼容了python3.7的語法。大家可以試一下。