tokens: This can be done with some for loops but it will not be efficient , So I tried to use the flexible apply of pandas but it seems that it runs the heavy code of myComplexFunc() twice !
ner_tags: O O O O O O B-Code_Block I-Code_Block O O O O O O O O O O O O O O O O B-Library O O O O O O O O O O B-Function O O