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# Getting the number of columns of a 2D NumPy array

schedule Aug 12, 2023
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To get the number of columns of a 2D Numpy array, use its `shape` property.

Here's a quick example. Suppose we have a 2 by 3 array:

``` x = np.array([[1,2,3], [4,5,6]])x array([[1, 2, 3], [4, 5, 6]]) ```

To get the number of columns:

``` x.shape[1] 3 ```

By the way, to get the number of rows:

``` x.shape[0] 2 ```
Published by Isshin Inada
Edited by 0 others
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