tokens: If someone leaves email field blank ( this is allowed because of SignUp model email = EmailField(blank=True)) , then self.cleaned_data.get('email') will return '' ( empty string ) .
ner_tags: O O O B-Class I-Class O O O O O O O O O B-Code_Block I-Code_Block I-Code_Block O O B-Code_Block O O B-Value O O B-Data_Type O O