spaCy - Doc.get_extension Classmethod

As the name implies, this class method will look up for a previously extension by name. It was also introduced in version 2.0 and will return a 4-tuple (default, method, getter, setter) value.

Example

An example of Doc.get_extension classmethod is given below −

import spacy
nlp_model = spacy.load("en_core_web_sm")
from spacy.tokens import Doc
Doc.set_extension('has_city', default=False, force = True)
extension = Doc.get_extension('has_city')
extension

Output

(False, None, None, None)