code: def get_root() -> str:
      """Get the project root directory.
  
      We require that all commands are run from the project root, i.e. the
      directory that contains setup.py, setup.cfg, and versioneer.py .
      """
      root = os.path.realpath(os.path.abspath(os.getcwd()))
      setup_py = os.path.join(root, "setup.py")
      pyproject_toml = os.path.join(root, "pyproject.toml")
      versioneer_py = os.path.join(root, "versioneer.py")
      if not (
          os.path.exists(setup_py)
          or os.path.exists(pyproject_toml)
          or os.path.exists(versioneer_py)
      ):
          # allow 'python path/to/setup.py COMMAND'
          root = os.path.dirname(
              os.path.realpath(os.path.abspath(sys.argv[0]))
          )
          setup_py = os.path.join(root, "setup.py")
          pyproject_toml = os.path.join(root, "pyproject.toml")
          versioneer_py = os.path.join(root, "versioneer.py")
      if not (
          os.path.exists(setup_py)
          or os.path.exists(pyproject_toml)
          or os.path.exists(versioneer_py)
      ):
          err = (
              "Versioneer was unable to run the project root directory. "
              "Versioneer requires setup.py to be executed from "
              "its immediate directory (like 'python setup.py COMMAND'), "
              "or in a way that lets it use sys.argv[0] to find the root "
              "(like 'python path/to/setup.py COMMAND')."
          )
          raise VersioneerBadRootError(err)
      try:
          # Certain runtime workflows (setup.py install/develop in a setuptools
          # tree) execute all dependencies in a single python process, so
          # "versioneer" may be imported multiple times, and python's shared
          # module-import table will cache the first one. So we can't use
          # os.path.dirname(__file__), as that will find whichever
          # versioneer.py was first imported, even in later projects.
          my_path = os.path.realpath(os.path.abspath(__file__))
          me_dir = os.path.normcase(os.path.splitext(my_path)[0])
          vsr_dir = os.path.normcase(os.path.splitext(versioneer_py)[0])
          if me_dir != vsr_dir and "VERSIONEER_PEP518" not in globals():
              print(
                  "Warning: build in %s is using versioneer.py from %s"
                  % (os.path.dirname(my_path), versioneer_py)
              )
      except NameError:
          pass
      return root
  
imports: import configparser
  import errno
  import json
  import os
  import re
  import subprocess
  import sys
  from pathlib import Path
  from typing import Any, Callable, cast, Dict, List, Optional, Tuple, Union
  from typing import NoReturn
  import functools
label_desc: Use image node_id 1 for calling a global function with example usage: get_root() and returns: root