Does ufunc functions operate on only ndarray objects

Python Help
1

Hi,
I’m new to python language and was reading about ufunc functions from NumPy. As per definition it says,
" ufuncs stands for “Universal Functions” and they are NumPy functions that operate on the ndarray object."

But in below example ufunc function is used on a list which is not a ndarray object,

import numpy as np

x = [1, 2, 3, 4]
y = [4, 5, 6, 7]
z = np.add(x, y)

print(z)

As per definition if it can operate only on ndarray objects then how it can operate on list(which is not ndarray object) ??

2

ufuncs don’t require their inputs to already be arrays. They’ll happily accept any “array like” objects, and will implicitly convert non-array arguments to arrays.

In numpy’s docs, this is indicated by a parameter having the type array_like. Parameters that need to be given actual ndarray instances are documented as having type ndarray.

3 Likes