windows环境下的同学可能会在pip sandman2后出现 sandman2 : 无法将“sandman2”项识别为 cmdlet、函数、脚本文件或可运行程序的名称。请检查名称的拼写，如果包括路径，请确保路径正确，然后再试 一次 这个情况，这时候你需要看一下pip时是否有类似这样的警告 WARNING: The script sandman2ctl.exe is installed in 'C:\Users\xxx\AppData\Roaming\Python\Python38\Scripts' which is not on PATH. Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location. 这时候你需要将该路径加入系统的环境变量即可调用sandman2ctl 如果在调用sandman2ctl报如下错误 File "c:\programdata\anaconda3\lib\runpy.py", line 194, in _run_module_as_main return _run_code(code, main_globals, None, File "C:\Users\xxx\AppData\Roaming\Python\Python38\site-packages\sqlalchemy\util\_collections.py", line 16, in < from .compat import binary_types File "C:\Users\xxx\AppData\Roaming\Python\Python38\site-packages\sqlalchemy\util\compat.py", line 331, in <module> time_func = time.clock AttributeError: module 'time' has no attribute 'clock' 请将文件定位到 C:\Users\xxx\AppData\Roaming\Python\Python38\site-packages\sqlalchemy\util\compat.py compat.py 这个文件，打开它 做如下修改 第331行 if win32 or jython: time_func = time.clock ← 替换为time.perf_counter() else: time_func = time.time 原因是python3.8不支持clock

我这边在base.py里设置了INSTALLED_APPS的recruitment.apps.UniversalManagerApp后，会报下面错误： django.core.exceptions.ImproperlyConfigured: Application labels aren't unique, duplicates: recruitment

要定制的admin的话，怎么处理？