django 1.11版本与python不兼容，启动django时候报错 ，2.0版本以后的Django修复了这个问题
解决办法：1 找到对应python环境下的widgets.py 删除逗号 python/Lib/site-packages/django/contrib/admin/widgets.py 151行
2 升级Django版本 pip install -U Django
Exception ignored in thread started by: <function check_errors.<locals>.wrapper at 0x0000025AADBD8D30> Traceback (most recent call last): File "D:softwarepy_workon_homepy38workstudentManagementSyslibsite-packagesdjangoutilsautoreload.py", line 227, in wrapper fn(*args, **kwargs) File "D:softwarepy_workon_homepy38workstudentManagementSyslibsite-packagesdjangocoremanagementcommands unserver.py", line 117, in inner_run autoreload.raise_last_exception() File "D:softwarepy_workon_homepy38workstudentManagementSyslibsite-packagesdjangoutilsautoreload.py", line 250, in raise_last_exception six.reraise(*_exception) File "D:softwarepy_workon_homepy38workstudentManagementSyslibsite-packagesdjangoutilssix.py", line 685, in reraise raise value.with_traceback(tb) File "D:softwarepy_workon_homepy38workstudentManagementSyslibsite-packagesdjangoutilsautoreload.py", line 227, in wrapper fn(*args, **kwargs) File "D:softwarepy_workon_homepy38workstudentManagementSyslibsite-packagesdjango\__init__.py", line 27, in setup apps.populate(settings.INSTALLED_APPS) File "D:softwarepy_workon_homepy38workstudentManagementSyslibsite-packagesdjangoapps egistry.py", line 85, in populate app_config = AppConfig.create(entry) File "D:softwarepy_workon_homepy38workstudentManagementSyslibsite-packagesdjangoappsconfig.py", line 94, in create module = import_module(entry) File "D:Python38libimportlib\__init__.py", line 127, in import_module return _bootstrap._gcd_import(name[level:], package, level) File "<frozen importlib._bootstrap>", line 1014, in _gcd_import File "<frozen importlib._bootstrap>", line 991, in _find_and_load File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked File "<frozen importlib._bootstrap>", line 671, in _load_unlocked File "<frozen importlib._bootstrap_external>", line 783, in exec_module File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed File "D:softwarepy_workon_homepy38workstudentManagementSyslibsite-packagesdjangocontribadmin\__init__.py", line 4, in <module> from django.contrib.admin.filters import ( File "D:softwarepy_workon_homepy38workstudentManagementSyslibsite-packagesdjangocontribadminfilters.py", line 10, in <module> from django.contrib.admin.options import IncorrectLookupParameters File "D:softwarepy_workon_homepy38workstudentManagementSyslibsite-packagesdjangocontribadminoptions.py", line 12, in <module> from django.contrib.admin import helpers, widgets SyntaxError: Generator expression must be parenthesized (widgets.py, line 151)