使用Django框架遇到RuntimeError: populate() isn't reentrant错误
在执行数据库迁移的时候报出错误RuntimeError: populate() isn't reentrant,之前也出过这个错误,但是忘记记录了,这次又出现了。百度搜好好多,都没解决我的问题,这里做个踩坑记录。
背景:项目有多个app,现在新需求增加了一个app,并编写了该app的utils文件
在执行python manage.py makemigrations后报出如下异常
Traceback (most recent call last):
File "manage.py", line 14, in <module>
execute_from_command_line(sys.argv)
File "D:\Program Files\Python37\lib\site-packages\django\core\management\__init__.py", line 381, in execute_from_command_line
utility.execute()
File "D:\Program Files\Python37\lib\site-packages\django\core\management\__init__.py", line 357, in execute
django.setup()
File "D:\Program Files\Python37\lib\site-packages\django\__init__.py", line 24, in setup
apps.populate(settings.INSTALLED_APPS)
File "D:\Program Files\Python37\lib\site-packages\django\apps\registry.py", line 81, in populate
raise RuntimeError("populate() isn't reentrant")
RuntimeError: populate() isn't reentrant
跟着错误信息,初步判定是新创建的app才引发的此问题,所以就把INSTALLED_APPS中新创建的app注释掉,再执行python manage.py makemigrations就不报异常了。
所以错误信息应当在新app中,在检查到utils文件时,发现引入包的方式有问题
文件目录为
未修改时引入方式为
修改后方式为
就是在引入TLSSigAPI模块时加上app的名称
总结:在新建app并初始化后,如果提示RuntimeError: populate() isn't reentrant错误,应该先检查每个app的模块引入情况。