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# Python | Numpy matrix.nonzero()

• Last Updated : 15 Apr, 2019

With the help of `Numpy matrix.nonzero()` method, we can get the index value of nonzero value from given matrix. It always gives us 2-D array.

Syntax : `matrix.nonzero()`

Return : Return index value of nonzero from given matrix

Example #1 :
In this example we can see that we are able to get the index value of nonzero from a given matrix with the help of method `matrix.nonzero()`.

 `# import the important module in python``import` `numpy as np``         ` `# make matrix with numpy``gfg ``=` `np.matrix(``'[64, 1; 0, 3]'``)``         ` `# applying matrix.nonzero() method``geeks ``=` `gfg.nonzero()``   ` `print``(geeks)`
Output:

```(array([0, 0, 1]), array([0, 1, 1]))
```

Example #2 :

 `# import the important module in python``import` `numpy as np``         ` `# make a matrix with numpy``gfg ``=` `np.matrix(``'[11, 0, 3; 34, 0, 65; 7, 68, 0]'``)``         ` `# applying matrix.nonzero() method``geeks ``=` `gfg.nonzero()``   ` `print``(geeks)`
Output:
```(array([0, 0, 1, 1, 2, 2]), array([0, 2, 0, 2, 0, 1]))
```

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