# Python | Numpy matrix.sum()

With the help of `matrix.sum()` method, we are able to find the sum of values in a matrix by using the same method.

Syntax : `matrix.sum()`
Return : Return sum of values in a matrix

Example #1 :
In this example we are able to find the sum of values in a matrix by using `matrix.sum()` method.

 `# import the important module in python ` `import` `numpy as np ` `            `  `# make matrix with numpy ` `gfg ``=` `np.matrix(``'[4, 1; 12, 3]'``) ` `            `  `# applying matrix.sum() method ` `geek ``=` `gfg.``sum``() ` `  `  `print``(geek) `

Output:

```20
```

Example #2 :

 `# import the important module in python ` `import` `numpy as np ` `            `  `# make matrix with numpy ` `gfg ``=` `np.matrix(``'[4, 1, 9; 12, 3, 1; 4, 5, 6]'``) ` `            `  `# applying matrix.sum() method ` `geek ``=` `gfg.``sum``(axis ``=` `1``) ` `  `  `print``(geek) `

Output:

```[

]
```

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