numpy.dtype.flags#
attribute
- 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.The following example demonstrates that operations on this particular dtype requires Python C-API.
Examples
>>> import numpy as np >>> x = np.dtype([('a', np.int32, 8), ('b', np.float64, 6)]) >>> x.flags 16 >>> np._core.multiarray.NEEDS_PYAPI 16