numpy.isscalar

numpy.isscalar(num)[源代码]

Returns True if the type of num is a scalar type.

Parameters:
num : any

Input argument, can be of any type and shape.

Returns:
val : bool

True if num is a scalar type, False if it is not.

Examples

>>> np.isscalar(3.1)
True
>>> np.isscalar([3.1])
False
>>> np.isscalar(False)
True
>>> np.isscalar('numpy')
True

NumPy supports PEP 3141 numbers:

>>> from fractions import Fraction
>>> isscalar(Fraction(5, 17))
True
>>> from numbers import Number
>>> isscalar(Number())
True