NumPy参考 >例行程序 >Data type routines > numpy.min_scalar_type
numpy.
min_scalar_type
(a)¶For scalar a
, returns the data type with the smallest size
and smallest scalar kind which can hold its value. For non-scalar
array a
, returns the vector’s dtype unmodified.
Floating point values are not demoted to integers, and complex values are not demoted to floats.
The value whose minimal data type is to be found.
The minimal data type.
See also
Notes
New in version 1.6.0.
Examples
>>> np.min_scalar_type(10)
dtype('uint8')
>>> np.min_scalar_type(-260)
dtype('int16')
>>> np.min_scalar_type(3.1)
dtype('float16')
>>> np.min_scalar_type(1e50)
dtype('float64')
>>> np.min_scalar_type(np.arange(4,dtype='f8'))
dtype('float64')