# numpy.isreal () in Python

NumPy | Python Methods and Functions

numpy.isreal (array): Test element by element if it is a real number or not (not infinity or not a Number) and return the result as a boolean array.
Parameters:

`  array:  [array_like] Input array whose element we want to test `

Return:

` boolean array containing the result `

Code 1:

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

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Output:

` Is Real: [False True] Is Real: [True True] `

Code 2:

Output:

` 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 `

Notes:
These codes will not work for online IDs. Please run them on your systems to see how they work

## Books for developers

 ` # Python program illustrating ` ` # numpy.isreal () method `   ` import ` ` numpy as geek `   # Returns True / False for each element ` a ` ` = ` ` geek.arange (` ` 20 ` `). reshape (` ` 5 ` `, ` ` 4 ` `) ` ` print ` ` (` ` "Is Real:" ` `, geek.isreal (a), ` ` "" ` `) `   ` # Returns True / False value as ANS ` ` # because we mentioned dtpe at the beginning ` ` a ` ` = ` ` geek.arange (` ` 20 ` `). reshape (` ` 5 ` `, ` ` 4 ` `). dtype ` ` = ` ` float ` ` print ` ` (` `" Is Real: "` `, geek.isreal (a)) `