How does the 'concat' function handle the axis parameter?

The numpy.concatenate() function uses the axis parameter to define the axis along which the arrays will be concatenated.

• If axis=0, the arrays are concatenated along the rows (vertically).
• If axis=1, the arrays are concatenated along the columns (horizontally).

The default value for the axis parameter is 0.

Here's the syntax for using the concatenate() function:

numpy.concatenate((a1, a2, ...), axis=0, out=None)

Make sure that the arrays being concatenated have the same shape along the specified axis.