class_docstr: Example Builder for sphinx documentation
code: def sphinx_tag(self, example_path):
      tag = os.path.splitext(os.path.normpath(example_path))[0]
      tag = tag.replace("/", "_")
      if tag in ("", "."):
          tag = "root"
      return "_".join([self.sphinx_tag_base, tag])
  
imports: import sys
  import os
  import traceback
  import token
  import tokenize
  import gc
  import shutil
  import glob
  import warnings
  import matplotlib
  from matplotlib import image
  from matplotlib import pyplot
label_desc: Use image node_id 11 for calling the ExampleBuilder obj's underlying member method code with example usage: obj.sphinx_tag(example_path) and returns: str