This module should be used by system administrators with caution as it provides no real authentication.
系统管理员应该慎用此模块，因为它并没有提供实际的验证。
2
In real systems, you may want to group all related SCA components into a single module for performance reasons.
在实际的系统中，出于性能原因，您可能希望将所有相关sca组件分组成单个模块。
3
It will be gone when the program finishes if you do not take steps to save it (such as writing it to a real file, or using the shelve module or a database).