backtrader和pyfolio的版本集合，对pyfolio进行了部分改动，对backtrader进行了注释和部分改动.
李笑来github《自学是门手艺》 https://github.com/selfteaching/the-craft-of-selfteaching.git
An NLP library with Awesome pre-trained Transformer models and easy-to-use interface, supporting wide-range of NLP tasks from research to industrial applications.
