python-scipyHow do I convert a Python Numpy array to a list?

The easiest way to convert a Python Numpy array to a list is to use the tolist() method. This method will convert the Numpy array into a list, and return the list.

For example, let's create a Numpy array:

import numpy as np

arr = np.array([1,2,3,4])

Now, let's convert it to a list:

list_arr = arr.tolist()

print(list_arr)

Output example

[1, 2, 3, 4]

The tolist() method is a built-in method of the Numpy library, and it takes no arguments.

Additionally, if you just want to iterate over the elements of the Numpy array, you can use the for loop syntax, as follows:

for elem in arr:
    print(elem)

Output example

1
2
3
4

Helpful links

• Numpy Documentation: ndarray.tolist
• Real Python: How to Iterate Through a Numpy Array

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