class_docstr: A wrapper to make KFold single entry cv iterator
class_docstr_tok: ["A","wrapper","to","make","KFold","single","entry","cv","iterator"]
code: def __init__(self, n_splits=4, n_samples=99):
      self.n_splits = n_splits
      self.n_samples = n_samples
      self.indices = iter(
          KFold(n_splits=n_splits).split(np.ones(n_samples))
      )
  
imports: import numpy
  from sklearn.model_selection import KFold
label_desc: Use image node_id 1 to create a new OneTimeSplitter object  with example: obj = OneTimeSplitter(n_splits, n_samples)