Python中的 numpy.isrealobj()
numpy.isrealobj(array) :此逻辑函数有助于检查数组是否没有复数类型或数组是否有复数。即使虚部等于 0,它也不被认为是一个 Real Object。
参数 :
array : [array_like]Input array or object whose elements, we need to test.
返回 :
True, if the input array hasn't any complex element; otherwise False
代码 1:
# Python program explaining
# isrealobj() function
import numpy as np
in_array = [1, 3, 5, 4]
print ("Input array : ", in_array)
output_value = np.isrealobj(in_array)
print ("\nIs real : ", output_value)
输出 :
Input array : [1, 3, 5, 4]
Is real : True
代码 2:
# Python Program illustrating
# numpy.isrealobj() method
import numpy as geek
# Returns True/False value for each element
a = geek.arange(20).reshape(5, 4)
print("Is real : ", geek.isrealobj(a))
# Returns True/False value as ans
# because we have mentioned dtpe in the beginning
b = geek.arange(20).reshape(5, 4).dtype = complex
print("\n",b)
print("\nIs real : ", geek.isrealobj(b))
b = [[1j],
[3]]
print("\nIs real : ", geek.isrealobj(b))
输出 :
Is real : True
class 'complex'
Is real : True
Is real : False
参考 :
https://docs.scipy.org/doc/numpy-1.13.0/reference/generated/numpy.isrealobj.html#numpy.isrealobj
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