numpy.dtype.isbuiltin#

attribute

dtype.isbuiltin#

Integer indicating how this dtype relates to the built-in dtypes.

Read-only.

0	if this is a structured array type, with fields
1	if this is a dtype compiled into numpy (such as ints, floats etc)
2	if the dtype is for a user-defined numpy type A user-defined type uses the numpy C-API machinery to extend numpy to handle a new array type. See User-defined data-types in the NumPy manual.

Examples

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>>> import numpy as np
>>> dt = np.dtype(np.int16)
>>> dt.isbuiltin
1
>>> dt = np.dtype(np.float64)
>>> dt.isbuiltin
1
>>> dt = np.dtype([('field1', np.float64)])
>>> dt.isbuiltin
0

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