How to use it in jupyter notebook?

[Ethan-Chen-plus]

notebook code：

from ml_collections import config_flags
_CONFIG = config_flags.DEFINE_config_file('config')
mp.set_start_method('spawn')

params = _CONFIG.value

get an error:

---------------------------------------------------------------------------
UnparsedFlagAccessError                   Traceback (most recent call last)
Cell In[2], line 5
      2 _CONFIG = config_flags.DEFINE_config_file('config')
      3 mp.set_start_method('spawn')
----> 5 params = _CONFIG.value

File ~/anaconda3/envs/LLM/lib/python3.11/site-packages/absl/flags/_flagvalues.py:1376, in FlagHolder.value(self)
   1365 @property
   1366 def value(self):
   1367   """Returns the value of the flag.
   1368 
   1369   If ``_ensure_non_none_value`` is ``True``, then return value is not
   (...)
   1374     IllegalFlagValueError: if value is None unexpectedly.
   1375   """
-> 1376   val = getattr(self._flagvalues, self._name)
   1377   if self._ensure_non_none_value and val is None:
   1378     raise _exceptions.IllegalFlagValueError(
   1379         'Unexpected None value for flag %s' % self._name)

File ~/anaconda3/envs/LLM/lib/python3.11/site-packages/absl/flags/_flagvalues.py:481, in FlagValues.__getattr__(self, name)
    479   return fl[name].value
    480 else:
--> 481   raise _exceptions.UnparsedFlagAccessError(
    482       'Trying to access flag --%s before flags were parsed.' % name)

UnparsedFlagAccessError: Trying to access flag --config before flags were parsed.