docstr: Calls `os.path.expanduser` on install dirs.
docstr_tok: ["Calls","`","os.path.expanduser","`","on","install","dirs","."]
code: def expand_dirs(self):
      """Calls `os.path.expanduser` on install dirs."""
      self._expand_attrs(
          [
              "install_purelib",
              "install_platlib",
              "install_lib",
              "install_headers",
              "install_scripts",
              "install_data",
          ]
      )
  
imports: import sys
  import os
  import contextlib
  import sysconfig
  import itertools
  from distutils._log import log
  from ..core import Command
  from ..debug import DEBUG
  from ..sysconfig import get_config_vars
  from ..file_util import write_file
  from ..util import convert_path, subst_vars, change_root
  from ..util import get_platform
  from ..errors import DistutilsOptionError, DistutilsPlatformError
  from .None import _framework_compat
  from ..None import _collections
  from site import USER_BASE
  from site import USER_SITE
label_desc: Use image node_id 9 for calling the install obj's underlying member method code with example usage: obj.expand_dirs() without return types