python-scipyHow do I convert a Python numpy.ndarray to a list?

To convert a Python numpy.ndarray to a list, you can use the tolist() method. This method will return a copy of the array data as a list.

For example:

import numpy as np

arr = np.array([1, 2, 3, 4, 5])

list_arr = arr.tolist()

print(list_arr)

Output example

[1, 2, 3, 4, 5]

The code above has the following parts:

1. import numpy as np - imports the numpy library and assigns it to the variable np
2. arr = np.array([1, 2, 3, 4, 5]) - creates a numpy array with the values 1, 2, 3, 4, 5 and assigns it to the variable arr
3. list_arr = arr.tolist() - converts the numpy array in the variable arr to a list and assigns it to the variable list_arr
4. print(list_arr) - prints the list in the variable list_arr

Helpful links

• NumPy Array to List
• NumPy Tutorial

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