class_docstr: NER Sample class to hold the necessary info and provide atomic operations.
class_docstr_tok: ["NER","Sample","class","to","hold","the","necessary","info","and","provide","atomic","operations","."]
docstr: Delete tokens and their NER tag.
  
  :param str field: field str
  :param list indices: list of int/list/slice
          shape：indices_num
          each index can be int indicate delete single item or
              their list like [1, 2, 3],
          can be list like (0,3) indicate replace items
              from 0 to 3(not included),
          can be slice which would be convert to list
  :return: Modified NERSample.
docstr_tok: ["Delete","tokens","and","their","NER","tag",".",":","param","str","field",":","field","str",":","param","list","indices",":","list","of","int\/list\/slice","shape\uff1aindices_num","each","index","can","be","int","indicate","delete","single","item","or","their","list","like","[","1",",","2",",","3","]",",","can","be","list","like","(","0,3",")","indicate","replace","items","from","0","to","3","(","not","included",")",",","can","be","slice","which","would","be","convert","to","list",":","return",":","Modified","NERSample","."]
code: def delete_field_at_indices(self, field, indices):
      r"""
      Delete tokens and their NER tag.
  
      :param str field: field str
      :param list indices: list of int/list/slice
              shape：indices_num
              each index can be int indicate delete single item or
                  their list like [1, 2, 3],
              can be list like (0,3) indicate replace items
                  from 0 to 3(not included),
              can be slice which would be convert to list
      :return: Modified NERSample.
  
      """
      assert field == "text"
      sample = self.clone(self)
      sample = super(NERSample, sample).delete_field_at_indices(
          field, indices
      )
      sample = super(NERSample, sample).delete_field_at_indices(
          "tags", indices
      )
  
      return sample
  
imports: from .sample import Sample
  from ..field import ListField, TextField
  from ....common.utils.list_op import get_align_seq
label_desc: Use image node_id 7 for calling the NERSample obj's underlying member method code with example usage: obj.delete_field_at_indices(field, indices) and returns: sample