code: def test_issue3869(sentence):
      """Test that the Doc's count_by function works consistently"""
      nlp = English()
      doc = nlp(sentence)
      count = 0
      for token in doc:
          count += token.is_alpha
      assert count == doc.count_by(IS_ALPHA).get(1, 0)
  
imports: import warnings
  import weakref
  import numpy
  import pytest
  from numpy.testing import assert_array_equal
  from thinc.api import NumpyOps, get_current_ops
  from spacy.attrs import DEP, ENT_IOB, ENT_TYPE, HEAD, IS_ALPHA, MORPH, POS, SENT_START, TAG
  from spacy.lang.en import English
  from spacy.lang.xx import MultiLanguage
  from spacy.language import Language
  from spacy.lexeme import Lexeme
  from spacy.tokens import Doc, Span, SpanGroup, Token
  from spacy.vocab import Vocab
  from .test_underscore import clean_underscore
label_desc: Use image node_id 7 for calling a global function with example usage: test_issue3869(sentence) without return types