code: def _check_psd(m):
      return np.all(np.linalg.eigvals(m) >= 0)
  
imports: from __future__ import absolute_import
  import numpy
  from sklearn.base import BaseEstimator, clone
  from sklearn.utils import check_array, as_float_array
  from joblib import Parallel, delayed
  from functools import partial
  from .inverse_covariance import _init_coefs
  from .None import QuicGraphicalLasso
label_desc: Use image node_id 1 for calling a global function with example usage: _check_psd(m) and returns: np