# How to Convert a 1D Array to a Multidimensional Array in Python?

To convert a 1D array (or a 1D list) to a multidimensional array in Python, you can use the `numpy` library. The `numpy` library provides functions and classes for working with arrays. You can use the `reshape()` function to change the shape of the array and convert it into a multidimensional array. Here’s an example:

``````import numpy as np

array_1d = np.array([1, 2, 3, 4, 5, 6])
num_rows = 2
num_columns = 3

array_2d = np.reshape(array_1d, (num_rows, num_columns))

print(array_2d)``````

In the code above, we import the `numpy` library as `np`. We have a 1D array called `array_1d` containing elements `[1, 2, 3, 4, 5, 6]`. We specify the desired number of rows and columns for the multidimensional array using `num_rows` and `num_columns`.

We use the `np.reshape()` function, passing in the `array_1d` and a tuple `(num_rows, num_columns)` representing the desired shape of the resulting multidimensional array.

The output will be:

``````[[1 2 3]
[4 5 6]]``````

In this example, the 1D array `[1, 2, 3, 4, 5, 6]` is converted to a 2D array with two rows and three columns. The elements are arranged in row-major order in the resulting multidimensional array.

Note that the total number of elements in the 1D array must match the product of the number of rows and columns in the desired multidimensional array. Otherwise, a `ValueError` will occur.