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# numpy.dtype.flags

`dtype.``flags`

  Bit-flags describing how this data type is to be interpreted.

  Bit-masks are in `numpy.core.multiarray` as the constants ITEM_HASOBJECT, LIST_PICKLE, ITEM_IS_POINTER, NEEDS_INIT, NEEDS_PYAPI, USE_GETITEM, USE_SETITEM. A full explanation of these flags is in C-API documentation; they are largely useful for user-defined data-types.