code: def sphinx_doc_build():
      os.environ["SPHINX_DOC_BUILD"] = "1"
      yield
      del os.environ["SPHINX_DOC_BUILD"]
  
imports: import os
  import sys
  from itertools import chain
  from string import ascii_letters, digits
  from unittest import mock
  import numpy
  import pytest
  import shapely
  from shapely.decorators import multithreading_enabled, requires_geos
label_desc: Use image node_id 2 for calling a global function with example usage: sphinx_doc_build() without return types