code: def copy(self):
      new = self._dok_container(self.shape, dtype=self.dtype)
      new._dict.update(self._dict)
      return new
  
imports: import itertools
  import numpy
  from ._matrix import spmatrix
  from ._base import _spbase, sparray, issparse
  from ._index import IndexMixin
  from ._sputils import isdense, getdtype, isshape, isintlike, isscalarlike, upcast, upcast_scalar, check_shape
label_desc: Use image node_id 40 for calling the _dok_base obj's underlying member method code with example usage: obj.copy() and returns: new