class_docstr: Helper class to read values from the registry
docstr: Return list of registry keys.
docstr_tok: ["Return","list","of","registry","keys","."]
code: def read_keys(cls, base, key):
      """Return list of registry keys."""
      try:
          handle = RegOpenKeyEx(base, key)
      except RegError:
          return None
      L = []
      i = 0
      while True:
          try:
              k = RegEnumKey(handle, i)
          except RegError:
              break
          L.append(k)
          i += 1
      return L
  
imports: import os
  import subprocess
  import sys
  import re
  import warnings
  from .errors import DistutilsExecError, DistutilsPlatformError, CompileError, LibError, LinkError
  from .ccompiler import CCompiler, gen_lib_options
  from ._log import log
  from .util import get_platform
  import winreg
label_desc: Use image node_id 2 for calling the Reg obj's underlying member method code with example usage: obj.read_keys(cls, base, key) and returns: L, None