numpy.bitwise_or() in Python (original) (raw)

Last Updated : 29 Nov, 2018

**numpy.bitwise_or()**function is used to Compute the bit-wise OR of two array element-wise. This function computes the bit-wise OR of the underlying binary representation of the integers in the input arrays.

Syntax : numpy.bitwise_or(arr1, arr2, /, out=None, *, where=True, casting=’same_kind’, order=’K’, dtype=None, ufunc ‘bitwise_or’)

Parameters :
arr1 : [array_like] Input array.
arr2 : [array_like] Input array.

out : [ndarray, optional] A location into which the result is stored.
-> If provided, it must have a shape that the inputs broadcast to.
-> If not provided or None, a freshly-allocated array is returned.
**kwargs : allows you to pass keyword variable length of argument to a function. It is used when we want to handle named argument in a function.
where : [array_like, optional]True value means to calculate the universal functions(ufunc) at that position, False value means to leave the value in the output alone.

Return : [ndarray or scalar] Result. This is a scalar if both x1 and x2 are scalars.

Code #1 : Working

import numpy as geek

in_num1 = 10

in_num2 = 11

print ( "Input number1 : " , in_num1)

print ( "Input number2 : " , in_num2)

out_num = geek.bitwise_or(in_num1, in_num2)

print ( "bitwise_or of 10 and 11 : " , out_num)

Output :

Input number1 : 10 Input number2 : 11 bitwise_or of 10 and 11 : 11

Code #2 :

import numpy as geek

in_arr1 = [ 2 , 8 , 125 ]

in_arr2 = [ 3 , 3 , 115 ]

print ( "Input array1 : " , in_arr1)

print ( "Input array2 : " , in_arr2)

out_arr = geek.bitwise_or(in_arr1, in_arr2)

print ( "Output array after bitwise_or: " , out_arr)

Output :

Input array1 : [2, 8, 125] Input array2 : [3, 3, 115] Output array after bitwise_or: [ 3 11 127]

Code #3 :

import numpy as geek

in_arr1 = [ True , False , True , False ]

in_arr2 = [ False , False , True , True ]

print ( "Input array1 : " , in_arr1)

print ( "Input array2 : " , in_arr2)

out_arr = geek.bitwise_or(in_arr1, in_arr2)

print ( "Output array after bitwise_or: " , out_arr)

Output :

Input array1 : [True, False, True, False] Input array2 : [False, False, True, True] Output array after bitwise_or: [ True False True True]