Python numpy.isreal()

Python numpy.isreal(array) :测试元素是否为实数(非无穷大或非非数字)，并将结果作为布尔数组返回。
参数 :

array : [array_like] 输入数组，我们要测试其元素。

返回 :

boolean array containing the result

代码 1 :

# Python Program illustrating
# numpy.isreal() method
  
import numpy as geek
 
print("Is Real : ", geek.isreal([1+1j, 0j]), "\n")
 
print("Is Real : ", geek.isreal([1, 0]), "\n")

输出 :

Is Real :  [False  True] 

Is Real :  [ True  True]

代码 2 :

# Python Program illustrating
# numpy.isreal() method
   
import numpy as geek
  
# Returns True/False value for each element
a = geek.arange(20).reshape(5, 4)
print("Is Real : \n", geek.isreal(a), "\n")
  
# Returns True/False value as ans
# because we have mentioned dtype in the beginning
a = geek.arange(20).reshape(5, 4).dtype = float
print("\nIs Real : ", geek.isreal(a))

输出 :

Is Real : 
 [[ True  True  True  True]
 [ True  True  True  True]
 [ True  True  True  True]
 [ True  True  True  True]
 [ True  True  True  True]] 


Is Real :  True