Related Articles
numpy string operations | not_equal() function
• Last Updated : 26 Jan, 2019

`numpy.core.defchararray.not_equal(arr1, arr2)` is another function for doing string operations in numpy. It checks the elements of two same shaped array one by one and returns True if they are not equal. Otherwise, it returns False.

Parameters:
arr1 : array_like of str or unicode.
arr2 : array_like of str or unicode.

Returns : [ndarray] Output array of bools, or a single bool if arr1 and arr2 are scalars.

Code #1 :

 `# Python program explaining``# numpy.char.not_equal() method `` ` `# importing numpy ``import` `numpy as geek`` ` `# input arrays  ``in_arr1 ``=` `geek.array(``'numpy'``)``print` `(``"1st Input array : "``, in_arr1)`` ` `in_arr2 ``=` `geek.array(``'nump'``)``print` `(``"2nd Input array : "``, in_arr2)  `` ` `# checking if they are not equal``out_arr ``=` `geek.char.not_equal(in_arr1, in_arr2)``print` `(``"Output array: "``, out_arr) `
Output:

```1st Input array :  numpy
2nd Input array :  nump
Output array:  True
```

Code #2 :

 `# Python program explaining``# numpy.char.not_equal() method `` ` `# importing numpy ``import` `numpy as geek`` ` `# input arrays  ``in_arr1 ``=` `geek.array([``'Geeks'``, ``'for'``, ``'Geeks'``])``print` `(``"1st Input array : "``, in_arr1) `` ` `in_arr2 ``=` `geek.array([``'Geek'``, ``'for'``, ``'Geek'``])``print` `(``"2nd Input array : "``, in_arr2) `` ` `# checking if they are not equal``out_arr ``=` `geek.char.not_equal(in_arr1, in_arr2)``print` `(``"Output array: "``, out_arr) `
Output:
```1st Input array :  ['Geeks' 'for' 'Geeks']
2nd Input array :  ['Geek' 'for' 'Geek']
Output array:  [ True False  True]
```

Code #3 :

 `# Python program explaining``# numpy.char.not_equal() method `` ` `# importing numpy ``import` `numpy as geek`` ` `# input arrays  ``in_arr1 ``=` `geek.array([``'10'``, ``'11'``, ``'12'``])``print` `(``"1st Input array : "``, in_arr1) `` ` `in_arr2 ``=` `geek.array([``'10'``, ``'11'``, ``'121'``])``print` `(``"2nd Input array : "``, in_arr2) `` ` ` ` `# checking if they are not equal``out_arr ``=` `geek.char.not_equal(in_arr1, in_arr2)``print` `(``"Output array: "``, out_arr) `
Output:
```1st Input array :  ['10' '11' '12']
2nd Input array :  ['10' '11' '121']
Output array:  [False False  True]
```

Attention geek! Strengthen your foundations with the Python Programming Foundation Course and learn the basics.

To begin with, your interview preparations Enhance your Data Structures concepts with the Python DS Course.

My Personal Notes arrow_drop_up